US3301164A - Hinged polypropylene louver set - Google Patents

Hinged polypropylene louver set Download PDF

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US3301164A
US3301164A US412057A US41205764A US3301164A US 3301164 A US3301164 A US 3301164A US 412057 A US412057 A US 412057A US 41205764 A US41205764 A US 41205764A US 3301164 A US3301164 A US 3301164A
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vanes
integrally molded
side members
gang bar
members
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US412057A
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Arthur H Eberhart
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CBS Corp
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Westinghouse Electric Corp
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • F24F13/15—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre with parallel simultaneously tiltable lamellae

Definitions

  • the present invention relates to adjustable air distribution grills or louver sets such as may be used to control the flow of air from an air conditioning cabinet or the like.
  • the supporting framework, the plurality of movable vane members, and the interconnecting control link which is usually referred to as a gang bar are simultaneously for-med and molded as a single piece of plastic material such as polypropylene.
  • Each of the movable vanes is connected to respective portions of the supporting framework by integrally molded flexible hinge or web portions to thus enable the respective vane to be movable on the frame.
  • the integrally molded gang bar is connected to a side edge portion of each vane by a flexible hinge or web portion in a plane parallel to but behind a side member of the frame so that a reciprocating movement of the gang bar will cause a simultaneous or ganged pivotal movement of the interconnected vanes.
  • FIGURE 1 is a perspective elevational view of the adjustable louver vane set of the invention as seen from the front;
  • FIG. 2 is a perspective elevational view of the adjustable louver vane set of the invention as seen from the rear;
  • FIG. 3 is a cross section on the line IIIIII of FIG. 2;
  • FIG. 4 is a fragmentary end view of one of the vanes showing the web or hinge connections to the gang bar and the frame with the frame broken away;
  • FIG. 5 is a section on the line VV of FIG. 2;
  • FIG. 6 is a fragmentary plan view of the top of the frame showing the flexible web connection of a vane to the inward projection of the frame.
  • the louver vane set of the invention is comprised of a molded frame including side members or rails 9, 10 and end cross members 11, 12.
  • the frame is molded in one piece of suitable plastic material which may preferably be polypropylene.
  • suitable plastic material which may preferably be polypropylene.
  • Polypropylene is a presently preferred material due to its extreme toughness and durability under flexing conditions as will be better understood from the following description of the details of the invention although it will be understood that other suitable plastic materials having the requisite toughness and flexibility may be used.
  • the louver set of the invention is shown to comprise 3,391,164 Patented Jan. 31, 1967 ice only three vanes 13-15 extending transversely between the side rails 9, 10 of the frame and it should be understood that any number of vanes may be provided as desired.
  • Each of the side rails 9, 10 is provided with a plurality of longitudinally spaced and oppositely positioned inwardly extending projections or ears 16, 17, 18 and 19, 20, 21, respectively, which are integrally molded with the respective frame side rails 9 and 10.
  • each of the vanes such as vane 13 is connected or joined to a respective projection such as the projection 16 by a thin flexible web portion such as shown at 22 which thus provides a hinge arrangement permitting the respective vanes to be moved about an axis parallel to the end cross members 11, 12 and transverse to the axis of the side rails 9, 10.
  • Each of the hinge web portions such as shown at 22 are integrally molded with the projections and the respective vanes such as the vane 13 and the previously mentioned preference for a tough and flexible plastic molding material such as polypropylene should now be well understood.
  • a gang bar such as shown at 30 is also integrally molded and connected to respective end surfaces of the vanes 13, 14 and 15 by flexible web or hinge portions such as shown at 31 for the vane 13. Since the gang bar is positioned in a plane behind the plane of the side member 9 and is interconnected to each of the vanes 13, 14, 15 by means of flexible hinge web portions such as shown at 31, it will be understood that a reciprocating movement of the gang bar 30 will cause a pivotal simultaneous or ganged movement of each vane about its pivotal points of connection to the frame side rails 9 and 10.
  • a journal slide rail 32 may be integrally molded in one corner of the frame although the invention is not limited to the positioning of the jou-rnal slide rail 32 at the corner of the frame.
  • An operating lever 33 see FIGS. 1, 2 and 3 of the drawings, is received in the slot 34 between the journal slide rail 32 and the side rail 9 and its lower end is received in a slot 35 formed at the end of this gang bar 30.
  • the operating lever is provided with a slot 36 in which is received the upwardly extending flange 37 that is integrally molded with the side frame 9 so that a pivoting movement of the operating lever 33 is prevented as it is slidably moved within the slot 34.
  • a different form of the operating lever 33 may be provided and it may be connected to the gang bar 30 at any point along its length.
  • An adjustable louver vane set formed as a one-piece structure molded from plastic material comprising, a frame including generally parallel spaced apart side members and oppositely disposed end cross members, each of said side members having a plurality of spaced integrally molded oppositely positioned inwardly extending projections, a plurality of vane members integrally molded between said side members aud connected by respective flexible plastic web portions to respective ones of said oppositely positioned projections, a gang bar integrally molded to interconnect respective end surfaces of said vanes in a plane behind the plane of the said connecting Web portions of said vanes to the projections of said side members, said gang bar being connected to the respective ones of said vanes by integrally molded flexible plastic web portions, said frame including integrally molded support means to receive movable operator means adapted to extend realwardly from said support means to connect with said gang bar for effecting pivoting of said vanes.
  • An adjustable louver vane set molded from plastic material comprising, a frame including generally parallel spaced apart side members and oppositely disposed end cross members, each of said side members having a plurality of spaced integrally molded oppositely positioned inwardly extending projections, a plurality of vane members integrally molded between said side members and connected by respective flexible web portions to respective ones of said oppositely positioned projections, a gang bar integrally molded to interconnect respective end surfaces of said vanes in a plane behind the plane of the said connecting web portions of said vanes to the projections of said side members, said gang bar being connected to the respective ones of said vanes by integrally molded flexible web portions, said frame including integrally molded support means to receive movable control means, control means carried by said support means and so connected to said gang bar that movement of said control means causes a reciprocating movement of said gang bar and a ganged pivotal movement of said vanes.
  • plastic material is comprised of polypropylene.
  • An adjustable louver vane set molded from plastic material comprising, a frame including generally parallel spaced apart side members and oppositely disposed end cross members, each of said side members having a plurality of spaced integrally molded oppositely positioned inwardly extending projections, a plurality of vane members integrally molded between said side members and connected by respective flexible web portions to respective ones of said oppositely positioned projections, a gang bar integrally molded to interconnect respective end surfaces of said vanes in a plane beneath the plane of the said connecting web portions of said vanes to the projections of said side members, said gang bar being connected to the respective ones of said vanes by integrally molded flexible web portions, said frame including integrally molded support means located in a corner of said frame to receive movable control means, and control means slidaoly journaled on said corner support means of said frame and connected to an end of said gang bar whereby slidable movement of said control means causes a reciprocating movement of said gang bar and a ganged pivotal movement
  • plastic material is comprised of polypropylene.

Description

Jan. 31, 1967 EBERHART 3,301,164
HINGED POLYPROPYLENE LOUVER SET Filed NOV. 18, 1964 2 Sheets-Sheet l 2 so g 30 i l6 22 7/1. W 1 't l L J FIGA.
WITNESSES NVENTOR film Arthur H. Eberhart ATTORNEY A. H. EBERHART 3,301,164
NGED POLYPROPYLENE LOUVER SET Jan. 31, 1967 2 Sheets-Sheet 2 Filed NOV. 18, 1964 United States Patent 3,301,164 HINGED POLYPROPYLENE LOUVER SET Arthur H. Eberhart, Hilliard, Ohio, assiguor to Westinghouse Electric Corporation, East Pittsburgh, Pa., a corporation of Pennsylvania Filed Nov. 18, 1964. Ser. No. 412,057 6 Claims. (Cl. 93-40) The present invention relates to adjustable air distribution grills or louver sets such as may be used to control the flow of air from an air conditioning cabinet or the like.
Numerous arrangements of movable vanes assembled in a frame as sets of controllable vanes for controlling air flow through an aperture have been devised in the past. Where a plurality of movable vanes are assembled in a set and supported on a common framework, the prior art arrangements have required the relatively costly procedure of assembling numerous individual parts in the mechanism together with the necessary interconnecting control linkages.
It is a principal object of the present invention to provide an improved low cost arrangement of a set of movable vanes in a single supporting framework that may be simultaneously formed and assembled with interconnecting control linkage by a single molding operation.
In accordance with the invention, the supporting framework, the plurality of movable vane members, and the interconnecting control link which is usually referred to as a gang bar are simultaneously for-med and molded as a single piece of plastic material such as polypropylene. Each of the movable vanes is connected to respective portions of the supporting framework by integrally molded flexible hinge or web portions to thus enable the respective vane to be movable on the frame. Also the integrally molded gang bar is connected to a side edge portion of each vane by a flexible hinge or web portion in a plane parallel to but behind a side member of the frame so that a reciprocating movement of the gang bar will cause a simultaneous or ganged pivotal movement of the interconnected vanes.
Various other features and the attendant advantages of the invention will be apparent with reference to the following specification and drawings, in which:
FIGURE 1 is a perspective elevational view of the adjustable louver vane set of the invention as seen from the front;
FIG. 2 is a perspective elevational view of the adjustable louver vane set of the invention as seen from the rear;
FIG. 3 is a cross section on the line IIIIII of FIG. 2;
FIG. 4 is a fragmentary end view of one of the vanes showing the web or hinge connections to the gang bar and the frame with the frame broken away;
FIG. 5 is a section on the line VV of FIG. 2; and
FIG. 6 is a fragmentary plan view of the top of the frame showing the flexible web connection of a vane to the inward projection of the frame.
Referring now to FIGS. 1 and 2 of the drawings, the louver vane set of the invention is comprised of a molded frame including side members or rails 9, 10 and end cross members 11, 12. The frame is molded in one piece of suitable plastic material which may preferably be polypropylene. Polypropylene is a presently preferred material due to its extreme toughness and durability under flexing conditions as will be better understood from the following description of the details of the invention although it will be understood that other suitable plastic materials having the requisite toughness and flexibility may be used. In order to simplify the drawings, the louver set of the invention is shown to comprise 3,391,164 Patented Jan. 31, 1967 ice only three vanes 13-15 extending transversely between the side rails 9, 10 of the frame and it should be understood that any number of vanes may be provided as desired.
Each of the side rails 9, 10 is provided with a plurality of longitudinally spaced and oppositely positioned inwardly extending projections or ears 16, 17, 18 and 19, 20, 21, respectively, which are integrally molded with the respective frame side rails 9 and 10. As more clearly shown by FIGS. 4, 5 and 6 of the drawings, each of the vanes such as vane 13 is connected or joined to a respective projection such as the projection 16 by a thin flexible web portion such as shown at 22 which thus provides a hinge arrangement permitting the respective vanes to be moved about an axis parallel to the end cross members 11, 12 and transverse to the axis of the side rails 9, 10. Each of the hinge web portions such as shown at 22 are integrally molded with the projections and the respective vanes such as the vane 13 and the previously mentioned preference for a tough and flexible plastic molding material such as polypropylene should now be well understood.
A gang bar such as shown at 30 is also integrally molded and connected to respective end surfaces of the vanes 13, 14 and 15 by flexible web or hinge portions such as shown at 31 for the vane 13. Since the gang bar is positioned in a plane behind the plane of the side member 9 and is interconnected to each of the vanes 13, 14, 15 by means of flexible hinge web portions such as shown at 31, it will be understood that a reciprocating movement of the gang bar 30 will cause a pivotal simultaneous or ganged movement of each vane about its pivotal points of connection to the frame side rails 9 and 10.
Now considering the above description of the invention, it will be seen that a one piece structure in which the frame members 9-12, the vanes 13-15, the projections 1621, and the hinge webs such as the webs 22 and 31 are all integrally molded in one piece of flexible polypropylene material by a single manufacturing step.
In order to provide a manual operator for reciprocating the gang bar 30, a journal slide rail 32 may be integrally molded in one corner of the frame although the invention is not limited to the positioning of the jou-rnal slide rail 32 at the corner of the frame. An operating lever 33, see FIGS. 1, 2 and 3 of the drawings, is received in the slot 34 between the journal slide rail 32 and the side rail 9 and its lower end is received in a slot 35 formed at the end of this gang bar 30. As the lever 33 is slidably moved in the slot 34, the gang bar 30 will be reciprocated to pivot the vanes 13-15 accordingly. The operating lever is provided with a slot 36 in which is received the upwardly extending flange 37 that is integrally molded with the side frame 9 so that a pivoting movement of the operating lever 33 is prevented as it is slidably moved within the slot 34.
Various modifications will occur to those skilled in the art. For example, a different form of the operating lever 33 may be provided and it may be connected to the gang bar 30 at any point along its length.
I claim as my invention:
1. An adjustable louver vane set formed as a one-piece structure molded from plastic material comprising, a frame including generally parallel spaced apart side members and oppositely disposed end cross members, each of said side members having a plurality of spaced integrally molded oppositely positioned inwardly extending projections, a plurality of vane members integrally molded between said side members aud connected by respective flexible plastic web portions to respective ones of said oppositely positioned projections, a gang bar integrally molded to interconnect respective end surfaces of said vanes in a plane behind the plane of the said connecting Web portions of said vanes to the projections of said side members, said gang bar being connected to the respective ones of said vanes by integrally molded flexible plastic web portions, said frame including integrally molded support means to receive movable operator means adapted to extend realwardly from said support means to connect with said gang bar for effecting pivoting of said vanes.
2. An adjustable louver vane set according to claim 1 wherein said plastic material is comprised of polypropylene.
3. An adjustable louver vane set molded from plastic material comprising, a frame including generally parallel spaced apart side members and oppositely disposed end cross members, each of said side members having a plurality of spaced integrally molded oppositely positioned inwardly extending projections, a plurality of vane members integrally molded between said side members and connected by respective flexible web portions to respective ones of said oppositely positioned projections, a gang bar integrally molded to interconnect respective end surfaces of said vanes in a plane behind the plane of the said connecting web portions of said vanes to the projections of said side members, said gang bar being connected to the respective ones of said vanes by integrally molded flexible web portions, said frame including integrally molded support means to receive movable control means, control means carried by said support means and so connected to said gang bar that movement of said control means causes a reciprocating movement of said gang bar and a ganged pivotal movement of said vanes.
4. The invention of claim 3 wherein said plastic material is comprised of polypropylene.
5. An adjustable louver vane set molded from plastic material comprising, a frame including generally parallel spaced apart side members and oppositely disposed end cross members, each of said side members having a plurality of spaced integrally molded oppositely positioned inwardly extending projections, a plurality of vane members integrally molded between said side members and connected by respective flexible web portions to respective ones of said oppositely positioned projections, a gang bar integrally molded to interconnect respective end surfaces of said vanes in a plane beneath the plane of the said connecting web portions of said vanes to the projections of said side members, said gang bar being connected to the respective ones of said vanes by integrally molded flexible web portions, said frame including integrally molded support means located in a corner of said frame to receive movable control means, and control means slidaoly journaled on said corner support means of said frame and connected to an end of said gang bar whereby slidable movement of said control means causes a reciprocating movement of said gang bar and a ganged pivotal movement of said vanes.
6. The invention of claim 5 wherein said plastic material is comprised of polypropylene.
References Cited by the Examiner UNITED STATES PATENTS 6/ 1963 Emery 98-40 5/1965 Wiseman 9 840

Claims (1)

1. AN ADJUSTABLE LOUVER VANE SET FORMED AS A ONE-PIECE STRUCTURE MOLDED FROM PLASTIC MATERIAL COMPRISING, A FRAME INCLUDING GENERALLY PARALLEL SPACED APART SIDE MEMBERS AND OPPOSITELY DISPOSED END CROSS MEMBERS, EACH OF SAID SIDE MEMBERS HAVING A PLURALITY OF SPACED INTEGRALLY MOLDED OPPOSITELY POSITIONED INWARDLY EXTENDING PROJECTIONS, A PLURALITY OF VANE MEMBERS INTEGRALLY MOLDED BETWEEN SAID SIDE MEMBERS AND CONNECTED BY RESPECTIVE FLEXIBLE PLASTIC WEB PORTIONS TO RESPECTIVE ONES OF SAID OPPOSITELY POSITIONED PROJECTIONS, A GANG BAR INTEGRALLY MOLDED TO INTERCONNECT RESPECTIVE END SURFACES OF SAID VANES IN A PLANE BEHIND THE PLANE OF THE SAID CONNECTING WEB PORTIONS OF SAID VANES TO THE PROJECTIONS OF SAID SIDE MEMBERS, SAID GANG BAR BEING CONNECTED TO THE RESPECTIVE ONES OF SAID VANES BY INTEGRALLY MOLDED FLEXIBLE PLASTIC WEB PORTIONS, SAID FRAME INCLUDING INTEGRALLY MOLDED SUPPORT MEANS TO RECEIVE MOVABLE OPERATOR MEANS ADAPTED TO EXTEND REARWARDLY FROM SAID SUPPORT MEANS TO CONNECT WITH SAID GANG BAR FOR EFFECTING PIVOTING OF SAID VANES.
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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3381601A (en) * 1966-08-29 1968-05-07 M & T Engineering Company Air damper assembly including sidewall sealing means
US3472149A (en) * 1968-02-14 1969-10-14 Whirlpool Co Airflow control means
US3509613A (en) * 1968-02-14 1970-05-05 Whirlpool Co Method of forming an air conditioner louver structure
US3570387A (en) * 1969-03-28 1971-03-16 James W Eggers Air vents
US3735691A (en) * 1972-01-07 1973-05-29 Ford Motor Co Louver assembly
FR2447521A1 (en) * 1979-01-25 1980-08-22 Clear Plastique Metal Sa Swivel ventilator for vehicle - has moulded plastics air flow direction blades integral with operating lever using thin hinge section
US4414170A (en) * 1980-10-22 1983-11-08 Nihon Plast Co., Ltd. Method of producing ventilator grills
US4635395A (en) * 1985-02-04 1987-01-13 Amcor Ltd. Louver assembly particularly useful for air-conditioning units or other like appliances
US4665804A (en) * 1984-11-26 1987-05-19 Nissan Motor Co., Ltd. Ventilator nozzle structure for automotive vehicle
BE1001876A3 (en) * 1988-12-13 1990-04-03 Sprl Bureau Tech De Ventilatio Ventilation grid
US5035359A (en) * 1989-03-10 1991-07-30 Toyota Jidosha Kabushiki Kaisha Device for changing a direction of an airstream
US7651390B1 (en) * 2007-03-12 2010-01-26 Profeta Jeffery L Ceiling vent air diverter
US20130029583A1 (en) * 2010-04-09 2013-01-31 Gree Electric Appliances, Inc. Of Zhuhai Wall hanging air conditioner
US20130068045A1 (en) * 2011-09-15 2013-03-21 University Of Florida Research Foundation, Inc. Dynamic wind velocity and pressure simulator

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3093060A (en) * 1960-04-04 1963-06-11 Eaton Mfg Co Flexible vane and grille assemblies
US3182579A (en) * 1962-02-12 1965-05-11 Westinghouse Electric Corp Molded flexible louver

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3093060A (en) * 1960-04-04 1963-06-11 Eaton Mfg Co Flexible vane and grille assemblies
US3182579A (en) * 1962-02-12 1965-05-11 Westinghouse Electric Corp Molded flexible louver

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3381601A (en) * 1966-08-29 1968-05-07 M & T Engineering Company Air damper assembly including sidewall sealing means
US3472149A (en) * 1968-02-14 1969-10-14 Whirlpool Co Airflow control means
US3509613A (en) * 1968-02-14 1970-05-05 Whirlpool Co Method of forming an air conditioner louver structure
US3570387A (en) * 1969-03-28 1971-03-16 James W Eggers Air vents
US3735691A (en) * 1972-01-07 1973-05-29 Ford Motor Co Louver assembly
FR2447521A1 (en) * 1979-01-25 1980-08-22 Clear Plastique Metal Sa Swivel ventilator for vehicle - has moulded plastics air flow direction blades integral with operating lever using thin hinge section
US4414170A (en) * 1980-10-22 1983-11-08 Nihon Plast Co., Ltd. Method of producing ventilator grills
US4665804A (en) * 1984-11-26 1987-05-19 Nissan Motor Co., Ltd. Ventilator nozzle structure for automotive vehicle
US4635395A (en) * 1985-02-04 1987-01-13 Amcor Ltd. Louver assembly particularly useful for air-conditioning units or other like appliances
BE1001876A3 (en) * 1988-12-13 1990-04-03 Sprl Bureau Tech De Ventilatio Ventilation grid
US5035359A (en) * 1989-03-10 1991-07-30 Toyota Jidosha Kabushiki Kaisha Device for changing a direction of an airstream
US7651390B1 (en) * 2007-03-12 2010-01-26 Profeta Jeffery L Ceiling vent air diverter
US20130029583A1 (en) * 2010-04-09 2013-01-31 Gree Electric Appliances, Inc. Of Zhuhai Wall hanging air conditioner
US20130068045A1 (en) * 2011-09-15 2013-03-21 University Of Florida Research Foundation, Inc. Dynamic wind velocity and pressure simulator
US9551627B2 (en) * 2011-09-15 2017-01-24 University Of Florida Research Foundation, Inc. Dynamic wind velocity and pressure simulator

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