US20060110272A1 - Venturi fan - Google Patents
Venturi fan Download PDFInfo
- Publication number
- US20060110272A1 US20060110272A1 US11/237,299 US23729905A US2006110272A1 US 20060110272 A1 US20060110272 A1 US 20060110272A1 US 23729905 A US23729905 A US 23729905A US 2006110272 A1 US2006110272 A1 US 2006110272A1
- Authority
- US
- United States
- Prior art keywords
- fan
- recited
- motor
- air
- blade assembly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 230000000593 degrading effect Effects 0.000 abstract description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/54—Fluid-guiding means, e.g. diffusers
- F04D29/541—Specially adapted for elastic fluid pumps
- F04D29/545—Ducts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
Definitions
- the present invention relates to fans generally, and to fans used in industrial and commercial settings in particular.
- a fan The purpose of a fan is move air in order to ventilate and cool an area.
- air conditioning may be impractical, fans are vital to employees' health and comfort.
- fans used in commercial and industrial environments.
- One type includes a fan blade enclosed within a wire frame housing or “cage”, sometimes mounted on a pedestal.
- the shaft of a motor outside the housing may project into the housing to turn the blades.
- These fans work fine in smaller quarters. Increasing the speed of the motor and the pitch of the blade allows this type of fan to throw more air, but increases noise.
- Another type of fan is a venturi fan that has a metal, venturi-shaped housing with a motor and a set of blades mounted therein. The set of blades is rotated by the motor and thus accelerates air through the housing.
- These fans move a large volume of air and project it over large distances, which fact is especially important in large industrial buildings such as distribution centers, but they are relatively noisy.
- the present invention is a venturi fan capable of producing a significant, directed flow of air but with significantly reduced noise compared to prior art venturi fans.
- the present fan has a body comprised of a generally cylindrical wire basket for carrying a motor and fan blade assembly, and a flared intake carried at the rear of the wire basket.
- the front of the basket carries an exit channel, which may also have a flare but is otherwise preferably substantially cylindrical in shape.
- the rear-flared intake allows for a smooth feed of air into the basket and past the motor and the air-accelerating fan blade assembly.
- the wire basket in a preferred embodiment, acts as a conduit for the flow-path air but also admits additional air into the flow path and channels the flow of air produced by the fan while allowing fan noise to dissipate through the sides.
- the basket also avoids generation of some fan noise and is a safety feature, preventing injury in its role as both the side and rear finger guard.
- An important feature of the present invention is the relatively open sides of the present fan, compared to prior art venturi fans.
- the relatively open sides contribute significantly and in a number of ways to noise reduction, chiefly by allowing noise to escape, while not significantly degrading the flow of air. Indeed, the openness of the sides increases the amount of air available to the fan.
- the combination of the rear flare intake and the wire basket is a significant feature of the present invention. This combination allows the flow of air generated by the fan blade assembly to be created and directed significant distances with little diffusion.
- wire basket to support the motor and fan blade assembly is yet another important feature of the present invention. This arrangement reduces material, weight and obstructions to air flow while providing a sufficiently sturdy securement for the motor and fan blade assembly.
- FIG. 1 is a perspective view of a fan, according to a preferred embodiment of the present invention.
- FIG. 2 is a side view of the fan of FIG. 1 , according to a preferred embodiment of the present invention
- FIG. 3 is a front view of the fan of FIG. 1 ;
- FIG. 4 is a rear view of the Fan of FIG. 1 ;
- FIG. 5 is a perspective view of the Fan of FIG. 1 with the front finger guard and fan blade assembly removed to show the mounting of the motor;
- FIG. 6 is a detailed view of the interior of the fan of FIG. 2 showing the manner in which the motor is mounted, according to a preferred embodiment of the present invention.
- the present invention is an improvement in venturi-style fans. Venturi fans direct a significant quantity of air in a forward direction and are suitable for large buildings such as warehouses. Unfortunately, prior art venturi fans are relatively noisy.
- FIG. 1 illustrates in perspective the present venturi fan 10 .
- Fan 10 has a housing 12 that is flared on both the front 14 and the rear 16 , and has a front finger guard 18 .
- Inside housing 12 is a motor 22 and a fan blade assembly 24 .
- venturi fan 10 is rotationally symmetric so it appears the same from all sides.
- venturi fan 10 shown in FIGS. 1-6 in its preferred embodiment, has an opening formed in the side wall 28 , preferably a multiplicity of openings such as perforations or an array of slots, but, most preferably, a multiplicity of openings formed by spacing wires 34 , either by constructing a cage or basket 32 , as shown.
- Basket 32 is illustrated as made from circular wires 34 secured at the desired intervals with cross supports 36 , also made of wire, or, alternatively, by forming a single helical wire secured with cross supports to maintain the desired spacing of each turn of the helical wire. Spacing between adjacent wires is in part dictated by safety requirements imposed by authorities, by the requisite strength required for fan 10 , by the function of fan 10 to serve as an airflow conduit but otherwise fan 10 is preferably open on side 26 to the greatest extent possible.
- Safety requirements relate to the size of the openings between wires 34 that, when properly set, the likelihood that someone will inadvertently stick fingers into the interior of basket 32 in the vicinity of fan blade assembly 40 is minimized. Consequently, the spacing will take into account the age of those likely to come into contact with fan 10 and the proximity of fan blade assembly 24 to basket 32 . Thus, the spacing will be wider if wires 34 are farther from fan blade assembly 24 and narrower closer to fan blade assembly 24 , and can include both spacings in the same basket 32 , as best seen in FIG. 2 .
- Basket 32 must also be rigid enough to support fan blade assembly 24 , a motor 22 and a rear flare 16 .
- Rear flare 16 is the solid portion of housing 12 .
- the term “flare” simply means that the cross sectional area taken at right angles with respect to the direction of air flow increases toward the end of housing 12 , as in the flare of a trumpet.
- front flare 14 is added to fan 10 to give the present fan 10 a symmetric, finished look.
- Front flare 14 includes an optional front finger guard 18 , best seen in FIG. 3 .
- Basket 32 is made to be basket-shaped so that it's rear portion 50 contiguous with side wall 28 and best seen in FIG. 5 , acts as a finger guard for the rear of fan 10 .
- Rear flare 16 helps to control the flow of air into fan 10 is because it minimizes turbulence and increases laminar flow. Rear flare 16 is significant from an airflow standpoint; front flare 14 is much less so and is essentially an optional feature of the invention, provided essentially for appearances.
- rear portion 50 provides a surface on which motor 22 can be mounted.
- Rear portion 50 has a central opening through which motor 22 is partially inserted.
- Brackets 54 that run along the side of basket 32 across rear portion 50 and thence into the interior of basket 32 where they form loops 58 and then return, are used to support motor 22 .
- Threaded posts 60 on the front of motor 22 extend through loops 58 .
- Nuts 62 are then threaded to posts 60 to secure motor 22 to brackets 54 .
- Motor 42 has a central shaft 68 to which fan blade assembly 40 is attached.
- Blade assembly may have three or more paddle blades 70 .
- the present fan 10 is much quieter than prior art venturi fans. While not wishing to be bound by theory, it is believed that this result has been achieved by a number of different factors working in combination.
- fan 10 controls and directs airflow in much the same way as a prior art venturi fan, sound now can disperse over a greater angle because side wall 28 of fan 10 is open and is not channeled with the airflow.
- the tips of its blade assembly normally pass closer to the housing than in the present fan 10 and the turbulence that arises sets up vibrations in the solid housing. Those vibrations are reflected throughout the housing and may resonate. Turbulence is reduced in the present fan 10 .
- the tips of fan blade assembly 24 are farther from wires 34 at least for safety reasons alone, and are no longer as starved for air, as air is admitted freely through side wall 28 between wires 34 . Furthermore, vibrations created by the movement of fan blade assembly 24 in the vicinity of wires 34 are weaker and less easily reflected by wires 34 .
- the prior art side wall mounted bracket has been removed in favor of mounting motor 22 directly onto rear portion 50 , thus eliminating a structure on the interior of the fan that causes additional turbulence and noise. It is believed that these changes result in less noise and “whiter” noise, that is, noise spread more evenly over the audible frequency spectrum.
- front and rear flares 14 , 16 may be the same and may be symmetrical with respect to each other, but may alternatively be different if desired for packaging efficiency.
- rear flare 16 may have a smaller diameter where it fits onto basket 32 than front flare 14 in order that basket 32 may have a slightly frustoconical shape, as shown best in FIG. 2 , so that it nests better with other baskets 32 in shipping or storing.
Abstract
A venturi-type fan is composed of a wire basket between front and rear flares. The wire basket has a rear portion to which the motor and fan blade assembly is mounted. The rear flare controls the admission of air into the fan to reduce turbulence and allows the flow of air to be accelerated and directed forward in a slowly diffusing column. The openness of the sides of the present fan reduces the noise generally associated with close-sided venturi fans without degrading air movement characteristics
Description
- The present application claims priority to U.S. Provisional Application Ser. No. 60/630,113, filed Nov. 22, 2004, incorporated herein by reference.
- The present invention relates to fans generally, and to fans used in industrial and commercial settings in particular.
- The purpose of a fan is move air in order to ventilate and cool an area. In industrial and commercial environments, where air conditioning may be impractical, fans are vital to employees' health and comfort.
- There are several types of fans used in commercial and industrial environments. One type includes a fan blade enclosed within a wire frame housing or “cage”, sometimes mounted on a pedestal. The shaft of a motor outside the housing may project into the housing to turn the blades. These fans work fine in smaller quarters. Increasing the speed of the motor and the pitch of the blade allows this type of fan to throw more air, but increases noise. Another type of fan is a venturi fan that has a metal, venturi-shaped housing with a motor and a set of blades mounted therein. The set of blades is rotated by the motor and thus accelerates air through the housing. These fans move a large volume of air and project it over large distances, which fact is especially important in large industrial buildings such as distribution centers, but they are relatively noisy.
- Thus there remains a need for improvements in fans, particularly high volume industrial and commercial fans such as venturi fans.
- According to its major aspects and briefly recited, the present invention is a venturi fan capable of producing a significant, directed flow of air but with significantly reduced noise compared to prior art venturi fans. The present fan has a body comprised of a generally cylindrical wire basket for carrying a motor and fan blade assembly, and a flared intake carried at the rear of the wire basket. Preferably, the front of the basket carries an exit channel, which may also have a flare but is otherwise preferably substantially cylindrical in shape. The rear-flared intake allows for a smooth feed of air into the basket and past the motor and the air-accelerating fan blade assembly. The wire basket, in a preferred embodiment, acts as a conduit for the flow-path air but also admits additional air into the flow path and channels the flow of air produced by the fan while allowing fan noise to dissipate through the sides. The basket also avoids generation of some fan noise and is a safety feature, preventing injury in its role as both the side and rear finger guard.
- An important feature of the present invention is the relatively open sides of the present fan, compared to prior art venturi fans. The relatively open sides contribute significantly and in a number of ways to noise reduction, chiefly by allowing noise to escape, while not significantly degrading the flow of air. Indeed, the openness of the sides increases the amount of air available to the fan.
- Additionally, the combination of the rear flare intake and the wire basket is a significant feature of the present invention. This combination allows the flow of air generated by the fan blade assembly to be created and directed significant distances with little diffusion.
- The use of the wire basket to support the motor and fan blade assembly is yet another important feature of the present invention. This arrangement reduces material, weight and obstructions to air flow while providing a sufficiently sturdy securement for the motor and fan blade assembly.
- These and other features and their advantages will be apparent to those skilled in the art of fan design from a careful reading of the Detailed Description of Preferred Embodiments accompanied by the following drawings.
- In the drawings,
-
FIG. 1 is a perspective view of a fan, according to a preferred embodiment of the present invention; -
FIG. 2 is a side view of the fan ofFIG. 1 , according to a preferred embodiment of the present invention; -
FIG. 3 is a front view of the fan ofFIG. 1 ; -
FIG. 4 is a rear view of the Fan ofFIG. 1 ; -
FIG. 5 is a perspective view of the Fan ofFIG. 1 with the front finger guard and fan blade assembly removed to show the mounting of the motor; and -
FIG. 6 is a detailed view of the interior of the fan ofFIG. 2 showing the manner in which the motor is mounted, according to a preferred embodiment of the present invention. - The present invention is an improvement in venturi-style fans. Venturi fans direct a significant quantity of air in a forward direction and are suitable for large buildings such as warehouses. Unfortunately, prior art venturi fans are relatively noisy.
-
FIG. 1 illustrates in perspective thepresent venturi fan 10. Fan 10 has ahousing 12 that is flared on both thefront 14 and the rear 16, and has afront finger guard 18. Insidehousing 12 is amotor 22 and afan blade assembly 24. - Referring now to
FIG. 2 , there is illustrated a side view ofventuri fan 10 according to a preferred embodiment of the present invention.Fan 10 is rotationally symmetric so it appears the same from all sides. Unlike prior art venturi fans,venturi fan 10, shown inFIGS. 1-6 in its preferred embodiment, has an opening formed in theside wall 28, preferably a multiplicity of openings such as perforations or an array of slots, but, most preferably, a multiplicity of openings formed byspacing wires 34, either by constructing a cage orbasket 32, as shown.Basket 32 is illustrated as made fromcircular wires 34 secured at the desired intervals withcross supports 36, also made of wire, or, alternatively, by forming a single helical wire secured with cross supports to maintain the desired spacing of each turn of the helical wire. Spacing between adjacent wires is in part dictated by safety requirements imposed by authorities, by the requisite strength required forfan 10, by the function offan 10 to serve as an airflow conduit but otherwisefan 10 is preferably open on side 26 to the greatest extent possible. - Safety requirements relate to the size of the openings between
wires 34 that, when properly set, the likelihood that someone will inadvertently stick fingers into the interior ofbasket 32 in the vicinity of fan blade assembly 40 is minimized. Consequently, the spacing will take into account the age of those likely to come into contact withfan 10 and the proximity offan blade assembly 24 tobasket 32. Thus, the spacing will be wider ifwires 34 are farther fromfan blade assembly 24 and narrower closer tofan blade assembly 24, and can include both spacings in thesame basket 32, as best seen inFIG. 2 . -
Basket 32 must also be rigid enough to supportfan blade assembly 24, amotor 22 and arear flare 16.Rear flare 16 is the solid portion ofhousing 12. The term “flare” simply means that the cross sectional area taken at right angles with respect to the direction of air flow increases toward the end ofhousing 12, as in the flare of a trumpet. Optionally,front flare 14 is added tofan 10 to give the present fan 10 a symmetric, finished look.Front flare 14 includes an optionalfront finger guard 18, best seen inFIG. 3 .Basket 32 is made to be basket-shaped so that it'srear portion 50 contiguous withside wall 28 and best seen inFIG. 5 , acts as a finger guard for the rear offan 10. -
Rear flare 16 helps to control the flow of air intofan 10 is because it minimizes turbulence and increases laminar flow.Rear flare 16 is significant from an airflow standpoint;front flare 14 is much less so and is essentially an optional feature of the invention, provided essentially for appearances. - In addition to acting as a rear finger guard,
rear portion 50 provides a surface on whichmotor 22 can be mounted.Rear portion 50 has a central opening through whichmotor 22 is partially inserted.Brackets 54, that run along the side ofbasket 32 acrossrear portion 50 and thence into the interior ofbasket 32 where they formloops 58 and then return, are used to supportmotor 22. Threaded posts 60 on the front ofmotor 22 extend throughloops 58.Nuts 62 are then threaded toposts 60 to securemotor 22 tobrackets 54. - Motor 42 has a
central shaft 68 to which fan blade assembly 40 is attached. Blade assembly may have three ormore paddle blades 70. - The
present fan 10 is much quieter than prior art venturi fans. While not wishing to be bound by theory, it is believed that this result has been achieved by a number of different factors working in combination. First, althoughfan 10 controls and directs airflow in much the same way as a prior art venturi fan, sound now can disperse over a greater angle becauseside wall 28 offan 10 is open and is not channeled with the airflow. Second, in the prior art venturi fan, the tips of its blade assembly normally pass closer to the housing than in thepresent fan 10 and the turbulence that arises sets up vibrations in the solid housing. Those vibrations are reflected throughout the housing and may resonate. Turbulence is reduced in thepresent fan 10. Indeed, the tips offan blade assembly 24 are farther fromwires 34 at least for safety reasons alone, and are no longer as starved for air, as air is admitted freely throughside wall 28 betweenwires 34. Furthermore, vibrations created by the movement offan blade assembly 24 in the vicinity ofwires 34 are weaker and less easily reflected bywires 34. The prior art side wall mounted bracket has been removed in favor of mountingmotor 22 directly ontorear portion 50, thus eliminating a structure on the interior of the fan that causes additional turbulence and noise. It is believed that these changes result in less noise and “whiter” noise, that is, noise spread more evenly over the audible frequency spectrum. - The shapes of the front and
rear flares rear flare 16 may have a smaller diameter where it fits ontobasket 32 thanfront flare 14 in order thatbasket 32 may have a slightly frustoconical shape, as shown best inFIG. 2 , so that it nests better withother baskets 32 in shipping or storing. - Many modifications and substitutions will be apparent to those skilled in the art of fan manufacture from the foregoing description of the preferred embodiments without departing from the spirit or scope of the present invention. It is intended that the scope of the present invention include all modifications that incorporate its principal design features, and that the scope and limitations of the present invention are to be determined by the appended claims.
Claims (11)
1. A fan, comprising:
a motor having a shaft;
a fan blade assembly carried by said shaft and rotatable therewith when said motor is operating, said fan blade assembly forming a flow of air when rotating; and
a housing having
a rear flare,
a side wall having at least one hole formed therein to admit air through said side wall to join said flow of air when said fan blade assembly rotates, and
a rear portion for carrying said motor.
2. The fan as recited in claim 1 , wherein said at least one hole is a multiplicity of holes.
3. The fan as recited in claim 1 , wherein said side wall is formed of spaced apart wires.
4. The fan as recited in claim 1 , wherein said side wall and said rear portion are formed of a wire basket.
5. The fan as recited in claim 1 , wherein said side wall is formed of a helical wire having plural turns, each turn of said plural turns being spaced apart from adjacent turns of said helical wire
6. The fan as recited in claim 1 , wherein said side wall is frustoconically shaped.
7. The fan as recited in claim 4 , wherein said wire basket is frustoconically shaped.
8. The fan as recited in claim 1 , wherein said housing carries a front finger guard.
9. The fan as recited in claim 1 , wherein said rear portion surrounds said motor.
10. The fan as recited in claim 1 , further comprising means carried by said rear portion for mounting said motor.
11. The fan as recited in claim 10 , wherein said mounting means is a set of brackets.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/237,299 US20060110272A1 (en) | 2004-11-22 | 2005-09-28 | Venturi fan |
CA002587859A CA2587859A1 (en) | 2004-11-22 | 2005-11-22 | Venturi fan |
EP05852085A EP1815141A2 (en) | 2004-11-22 | 2005-11-22 | Venturi fan |
MX2007006008A MX2007006008A (en) | 2004-11-22 | 2005-11-22 | Venturi fan. |
AU2005309642A AU2005309642A1 (en) | 2004-11-22 | 2005-11-22 | Venturi fan |
PCT/US2005/042508 WO2006058100A2 (en) | 2004-11-22 | 2005-11-22 | Venturi fan |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US63011304P | 2004-11-22 | 2004-11-22 | |
US11/237,299 US20060110272A1 (en) | 2004-11-22 | 2005-09-28 | Venturi fan |
Publications (1)
Publication Number | Publication Date |
---|---|
US20060110272A1 true US20060110272A1 (en) | 2006-05-25 |
Family
ID=36461101
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/237,299 Abandoned US20060110272A1 (en) | 2004-11-22 | 2005-09-28 | Venturi fan |
Country Status (6)
Country | Link |
---|---|
US (1) | US20060110272A1 (en) |
EP (1) | EP1815141A2 (en) |
AU (1) | AU2005309642A1 (en) |
CA (1) | CA2587859A1 (en) |
MX (1) | MX2007006008A (en) |
WO (1) | WO2006058100A2 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150231543A1 (en) * | 2014-02-18 | 2015-08-20 | Blueair Ab | Air purifier device with fan duct |
US20150323177A1 (en) * | 2014-05-06 | 2015-11-12 | Steffes Corporation | Air-assist flare |
US9694369B2 (en) | 2014-02-18 | 2017-07-04 | Blueair Ab | Air purifier device with ionizing means |
US9919252B2 (en) | 2014-02-18 | 2018-03-20 | Blueair Ab | Air purifier device with coupling mechanism |
USD879280S1 (en) | 2018-06-29 | 2020-03-24 | Patterson Fan Company | Venturi fan |
Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US442615A (en) * | 1890-12-16 | Marine propulsion | ||
US521862A (en) * | 1894-06-26 | Ventilating-fan | ||
US2191341A (en) * | 1937-02-26 | 1940-02-20 | Jeffrey Mfg Co | Ventilator |
US2252256A (en) * | 1939-01-11 | 1941-08-12 | Harris Eliot Huntington | Sound attenuator for air impellers |
US2420209A (en) * | 1944-07-10 | 1947-05-06 | Clifford M Strom | Electric fan |
US2441737A (en) * | 1944-01-03 | 1948-05-18 | William W Weich | Plastic ventilator fan |
US2618435A (en) * | 1950-02-25 | 1952-11-18 | Westinghouse Electric Corp | Air translating apparatus |
US3903960A (en) * | 1973-12-26 | 1975-09-09 | Int Harvester Co | Fan shroud entrance structure |
US4818183A (en) * | 1987-12-03 | 1989-04-04 | Schaefer Ronald E | Low impedance fan safety guard |
US6027307A (en) * | 1997-06-05 | 2000-02-22 | Halla Climate Control Corporation | Fan and shroud assembly adopting the fan |
USD444222S1 (en) * | 2000-08-14 | 2001-06-26 | Lasko Holdings, Inc. | Pivot fan |
US6347922B1 (en) * | 2000-03-09 | 2002-02-19 | Pierce Wang | Portable cooling fan with indented blades |
US6710486B1 (en) * | 2003-01-13 | 2004-03-23 | Sunonwealth Electric Machine Industry Co., Ltd. | Housing structure for a heat-dissipation fan |
USD557398S1 (en) * | 2005-09-28 | 2007-12-11 | Patterson Fan Company | Venturi fan |
-
2005
- 2005-09-28 US US11/237,299 patent/US20060110272A1/en not_active Abandoned
- 2005-11-22 AU AU2005309642A patent/AU2005309642A1/en not_active Abandoned
- 2005-11-22 WO PCT/US2005/042508 patent/WO2006058100A2/en active Application Filing
- 2005-11-22 MX MX2007006008A patent/MX2007006008A/en not_active Application Discontinuation
- 2005-11-22 CA CA002587859A patent/CA2587859A1/en not_active Abandoned
- 2005-11-22 EP EP05852085A patent/EP1815141A2/en not_active Withdrawn
Patent Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US442615A (en) * | 1890-12-16 | Marine propulsion | ||
US521862A (en) * | 1894-06-26 | Ventilating-fan | ||
US2191341A (en) * | 1937-02-26 | 1940-02-20 | Jeffrey Mfg Co | Ventilator |
US2252256A (en) * | 1939-01-11 | 1941-08-12 | Harris Eliot Huntington | Sound attenuator for air impellers |
US2441737A (en) * | 1944-01-03 | 1948-05-18 | William W Weich | Plastic ventilator fan |
US2420209A (en) * | 1944-07-10 | 1947-05-06 | Clifford M Strom | Electric fan |
US2618435A (en) * | 1950-02-25 | 1952-11-18 | Westinghouse Electric Corp | Air translating apparatus |
US3903960A (en) * | 1973-12-26 | 1975-09-09 | Int Harvester Co | Fan shroud entrance structure |
US4818183A (en) * | 1987-12-03 | 1989-04-04 | Schaefer Ronald E | Low impedance fan safety guard |
US6027307A (en) * | 1997-06-05 | 2000-02-22 | Halla Climate Control Corporation | Fan and shroud assembly adopting the fan |
US6347922B1 (en) * | 2000-03-09 | 2002-02-19 | Pierce Wang | Portable cooling fan with indented blades |
USD444222S1 (en) * | 2000-08-14 | 2001-06-26 | Lasko Holdings, Inc. | Pivot fan |
US6710486B1 (en) * | 2003-01-13 | 2004-03-23 | Sunonwealth Electric Machine Industry Co., Ltd. | Housing structure for a heat-dissipation fan |
USD557398S1 (en) * | 2005-09-28 | 2007-12-11 | Patterson Fan Company | Venturi fan |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150231543A1 (en) * | 2014-02-18 | 2015-08-20 | Blueair Ab | Air purifier device with fan duct |
US9636617B2 (en) * | 2014-02-18 | 2017-05-02 | Blueair Ab | Air purifier device with fan duct |
US9694369B2 (en) | 2014-02-18 | 2017-07-04 | Blueair Ab | Air purifier device with ionizing means |
US9919252B2 (en) | 2014-02-18 | 2018-03-20 | Blueair Ab | Air purifier device with coupling mechanism |
US20150323177A1 (en) * | 2014-05-06 | 2015-11-12 | Steffes Corporation | Air-assist flare |
USD833900S1 (en) | 2014-05-06 | 2018-11-20 | Steffes Corporation | Air-assist flare |
USD879280S1 (en) | 2018-06-29 | 2020-03-24 | Patterson Fan Company | Venturi fan |
Also Published As
Publication number | Publication date |
---|---|
AU2005309642A1 (en) | 2006-06-01 |
CA2587859A1 (en) | 2006-06-01 |
WO2006058100A2 (en) | 2006-06-01 |
WO2006058100A3 (en) | 2007-02-01 |
EP1815141A2 (en) | 2007-08-08 |
MX2007006008A (en) | 2007-07-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: PATTERSON FAN COMPANY, SOUTH CAROLINA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MOORE, MARK;PATTERSON, VANCE M.;SALISBURY, THOMAS;REEL/FRAME:016966/0970 Effective date: 20041110 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |