US2655857A - Air supply grill - Google Patents

Air supply grill Download PDF

Info

Publication number
US2655857A
US2655857A US110857A US11085749A US2655857A US 2655857 A US2655857 A US 2655857A US 110857 A US110857 A US 110857A US 11085749 A US11085749 A US 11085749A US 2655857 A US2655857 A US 2655857A
Authority
US
United States
Prior art keywords
members
frame
grill
leg portions
opening
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.)
Expired - Lifetime
Application number
US110857A
Inventor
Broberg Georg Karl Johan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Svenska Flaktfabriken AB
Original Assignee
Svenska Flaktfabriken AB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Svenska Flaktfabriken AB filed Critical Svenska Flaktfabriken AB
Application granted granted Critical
Publication of US2655857A publication Critical patent/US2655857A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • 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
    • F24F13/02—Ducting arrangements
    • F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
    • F24F13/075—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser having parallel rods or lamellae directing the outflow, e.g. the rods or lamellae being individually adjustable
    • 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
    • F24F13/082—Grilles, registers or guards

Definitions

  • FIG. 1 A block diagram illustrating an exemplary computing environment in accordance with the present disclosure.
  • FIG. 1 A block diagram illustrating an exemplary computing environment in accordance with the present disclosure.
  • discharge grills especially for air, which consist of a frame having members mounted therein and forming discharge slots between them.
  • the object of the invention is to provide an improved grill construction, where the improvement primarily concerns the construction of the members forming the slots in the grill with the possibilities of variation with regard to the form of the members, which this implies, and the arrangement of the members in the grill framework.
  • the arrangement according to the invention is characterized in that the members are made of plates of metal or other material which are bent so, that in a section in angular position to the bending edge they have two legs, the free ends-of which extend generally in the same direction.
  • the curvilinear base can be semicircular in section and the legs can be plane, form an acuate angle, and of the same or of differing length.
  • some of the members can have legs of the same length and others those of differing length.
  • the members are suitably made of sheet material with the same dimensions irrespective of whether the legs are of the same or of differing length.
  • the members are manufactured in the last-mentioned way or not, they are preferably mounted in the frame in such a way that curvilinear bases of the plates are disposed tangent to a common plane surface with the free end edges of the leg portions likewise disposed in a common plane.
  • the material for the production of the members is suitably a plane rectangular plate of easily bendable material, whereby the plate edges are preferably rounded off.
  • the members can be mounted in the frame in different ways, so that the openings between them direct the passing currents of air in different directions, for instance straight forward, to one or the other side or spread all the air currents of the grill fan-shapedly.
  • the legs of the members extend suitably with their free ends a little bit outside the frame.
  • the method according to the invention substantially concerns the way of bending with the same tool the plates of one and the same plate material with fixed dimensions into the desired form, thereby obtaining legs of the same or of differing desired length as it may be desired.
  • Fig. 1 represents the front of an air supply grill
  • Fig. 2 a horizontal section of this and Fig. 3 a vertical section of the same grill.
  • Fig. 4 shows in section how the bending of the plates is carried out.
  • FIG. 5 designates a rectangular frame, which is provided with a flange 6 around the front.
  • Members in the form of bent plates 1 of generally U-cross-sectional shape are placed across the frame opening.
  • These members have a curvilinear base portion 8 and almost parallel sides or legs 9 and in. Some of the members have legs 9, H] of the same length, whereas others have one leg longer than the other.
  • the spaces between adjacent members form slots in the grill for a medium to pass through.
  • the members are so made that the curvilinear base portion 8 of the members are tangent to a common plane and similarly the free edges of the leg portions of the member are disposed in a common plane surface. For this purpose materials of different sizes for the plates are necessary.
  • equal sized material can be used for all of the members.
  • the members can then be so mounted in the framework, so that either the curved base portions and/or the free edges of the legs will lie in a common plane.
  • the material for the plates is here a piece of a plane rectangular plate, which is bent into the desired form.
  • the edges of the material or the intended front edges of the legs can be rounded from the beginning.
  • the members are so placed that the openings formed by them spread fan-shapedly a medium passing through the grill. It is sufficient if the members are fabricated with groupwise increasing angle of dispersion.
  • the members are attached to the frame by welding, soldering, deformation or in another mechanical way.
  • Fig. 4 shows bending the plates.
  • the plane plate material H is placed between a patrix (punch) l2 and a matrix I3, which are pressed against each other, whereby the plate material is given the form it illustrated in dash-dotted lines in the figure.
  • the shown plane plate material II in Fig. 4 to the right or to the left before the pressing, members with legs of different lengths utilizable to one and the same grill are obtained.
  • a grill construction comprising a frame having a wall defining an opening therein, a plurality of members of generally U-cross-sectional shape mounted in said frame in parallel spaced relation across the opening therein, said U-shaped members each comprising a curvilinear base portion and a pair of plane leg portions extending perpendicular to the direction of parallel spacing of the members and spanning the opening between the frame wall with said leg portions extending from the base portion outwardly through the frame opening with their free end edge. portions only projecting a. short. distance beyond the said frame, the leg portions of each member being slightly divergent with respect to. each other outwardly from the base portion, and said divergent leg portions defining with. the leg portions of adjacent members and the intermediate frame wall tubular discharge passages. which are convergent outwardly.
  • a grill construction comprising a frame having a wall defining anopening therein, a plu rality of members of generally .u-cross-sectional shape mounted in said frame in parallel spaced relation across the opening therein, said U-shaped members each comprising a curvilinear base portion disposed tangent to a common plane and a pair of plane leg portions, the base and plane leg portions of the member extending perpendicular to the direction of parallel spacing of the members and spanning the opening between the frame wall with said leg portions extending from the base portion outwardly through the frame open.- ing with their free end edge. portions only pro iecting a. short distance beyond the said frame, the leg portions of each member being slightly divergent with respect to each other outwardly from. the base portion, and said divergent leg portions defining with the leg portions of adjacent members and the intermediate frame wall tubular discharge passages which are. convergent outwardly.
  • a grill construction comprising a. frame. having a wall defining an. opening therein, a plurality of members of generally U-cross-sectional. shape mountedin said frame in parallel spaced relation across the opening therein, said U..- shaped members each comprising a. curvilinear base portion and a pair of plane leg portions extending perpendicular to the direction of par-- allel spacing of the members and spanning the opening between the frame wall with. said le portions extending from the base portion outwardly through the frame opening with their free end edge portions only projecting a short distance beyond the said frame and disposed in a common plane, the leg portions of each member being slightly divergent with. respect to each divergent leg portions defining with the leg portions of adjacent members and the intermediate frame wall tubular discharge passages which are convergent outwardly.
  • a grill construction comprising a frame having a wall defining an opening therein, a plurality of members of. generally u -cross-sectional shape mounted said. frame in. parallel spaced relation across the opening therein, said U-shaped members each comprising a curvilinear base portion and a pair of plane leg portions extending perpendicular to the direction of parallel spacing of the members and spanning the opening between the frame wall with said leg portions extending from the base. portion outwardly through the frame opening with their free end edge portions only projecting a short distance beyond the said frame; each succeeding member outwardly in opposite direction from the central-most member being disposed at a greater acute angle than the preceding inner member, and the adjacent leg. portions of adjacent members and the intermediate frame Wall cooperating to define tubular discharge passages which are directly fanshapedly.
  • A. grill construction comprising a frame having a wall defining an opening-therein, a plurality of members of generally U-cross-sectional shape mounted in said frame in parallel spaced relation across the opening therein, said U-shaped members each comprising a curvilinear base portion disposed tangent to a common plane and a pair of plane leg portions, the base and plane leg portions of the member extending perpendicular to the direction of parallel spacing of the members and spanning the openingbetween the frame Wall with said leg portions extending from the base portion outwardly through the frame opening with their free end edge portions only projecting, a short distance beyond the said frame and disposed in a common plane, the leg portions of each member being slightly divergent with respect to each other outwardly from the base portion and defining with-the leg portions of adjacent members and the intermediate frame wall tubular discharge passages which are convergent outwardly, and each succeeding member in opposite directions from the central-most member beingdisposed at a greater acute angle than the preceding inner member to thereby define discharge passages which are directed

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Flow Control Members (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Furnace Details (AREA)

Description

Oct. 20, 1953 G. K. J. BROBEVRG AIR SUPPLY GRILL Filed Aug. 17, 1949 FIG. 1
Patented Oct. 20, 1953 AIR SUPPLY GRILL Georg Karl Johan Broberg, Solna, Sweden, assignor to AB Svenska Flaktfabriken, Stockholm, Sweden Application August 17, 1949, Serial No. 110,857 In Sweden August 25, 1948 Claims.
The invention hereinafter described as reference to discharge grills, especially for air, which consist of a frame having members mounted therein and forming discharge slots between them.
The object of the invention is to provide an improved grill construction, where the improvement primarily concerns the construction of the members forming the slots in the grill with the possibilities of variation with regard to the form of the members, which this implies, and the arrangement of the members in the grill framework.
The arrangement according to the invention is characterized in that the members are made of plates of metal or other material which are bent so, that in a section in angular position to the bending edge they have two legs, the free ends-of which extend generally in the same direction. The curvilinear base can be semicircular in section and the legs can be plane, form an acuate angle, and of the same or of differing length. In one and the same grill some of the members can have legs of the same length and others those of differing length. The members are suitably made of sheet material with the same dimensions irrespective of whether the legs are of the same or of differing length. Whether the members are manufactured in the last-mentioned way or not, they are preferably mounted in the frame in such a way that curvilinear bases of the plates are disposed tangent to a common plane surface with the free end edges of the leg portions likewise disposed in a common plane. The material for the production of the members is suitably a plane rectangular plate of easily bendable material, whereby the plate edges are preferably rounded off. The members can be mounted in the frame in different ways, so that the openings between them direct the passing currents of air in different directions, for instance straight forward, to one or the other side or spread all the air currents of the grill fan-shapedly. The legs of the members extend suitably with their free ends a little bit outside the frame.
The method according to the invention substantially concerns the way of bending with the same tool the plates of one and the same plate material with fixed dimensions into the desired form, thereby obtaining legs of the same or of differing desired length as it may be desired.
An embodiment of the invention is illustrated in the accompanying drawing, where:
Fig. 1 represents the front of an air supply grill,
Fig. 2 a horizontal section of this and Fig. 3 a vertical section of the same grill.
Fig. 4 shows in section how the bending of the plates is carried out.
In the drawing 5 designates a rectangular frame, which is provided with a flange 6 around the front. Members in the form of bent plates 1 of generally U-cross-sectional shape are placed across the frame opening. These members have a curvilinear base portion 8 and almost parallel sides or legs 9 and in. Some of the members have legs 9, H] of the same length, whereas others have one leg longer than the other. The spaces between adjacent members form slots in the grill for a medium to pass through. In Fig. 2 the members are so made that the curvilinear base portion 8 of the members are tangent to a common plane and similarly the free edges of the leg portions of the member are disposed in a common plane surface. For this purpose materials of different sizes for the plates are necessary. According to the invention, however, equal sized material can be used for all of the members. The members can then be so mounted in the framework, so that either the curved base portions and/or the free edges of the legs will lie in a common plane. The material for the plates is here a piece of a plane rectangular plate, which is bent into the desired form. The edges of the material or the intended front edges of the legs can be rounded from the beginning. In Fig. 2 the members are so placed that the openings formed by them spread fan-shapedly a medium passing through the grill. It is sufficient if the members are fabricated with groupwise increasing angle of dispersion. The members are attached to the frame by welding, soldering, deformation or in another mechanical way. It is to be noted that in Figures 1-3 the legs 9, ill of the members extend a little bit outside the plane of the frame. Owing to this the legs of one and the same member will form a channel between two discharge openings of the grill, to which channel the air from the space above and below the grill always has free passage. As the air in the channel is constantly carried away by the air passing through the grill and the air in the channel is all the time renewed by the air flowing downwards and upwards, the supplied air and the air within the supply space will thus be mixed very well. The direction of the air flow supplied through the grill is indicated by arrows in Fig. 2.
Fig. 4 shows bending the plates. The plane plate material H is placed between a patrix (punch) l2 and a matrix I3, which are pressed against each other, whereby the plate material is given the form it illustrated in dash-dotted lines in the figure. By moving the shown plane plate material II in Fig. 4, to the right or to the left before the pressing, members with legs of different lengths utilizable to one and the same grill are obtained.
Having now described my invention, what I claim as new, and desire to secure by United States Letters Patent, is:
1. A grill construction comprising a frame having a wall defining an opening therein, a plurality of members of generally U-cross-sectional shape mounted in said frame in parallel spaced relation across the opening therein, said U-shaped members each comprising a curvilinear base portion and a pair of plane leg portions extending perpendicular to the direction of parallel spacing of the members and spanning the opening between the frame wall with said leg portions extending from the base portion outwardly through the frame opening with their free end edge. portions only projecting a. short. distance beyond the said frame, the leg portions of each member being slightly divergent with respect to. each other outwardly from the base portion, and said divergent leg portions defining with. the leg portions of adjacent members and the intermediate frame wall tubular discharge passages. which are convergent outwardly.
2.. A grill construction comprising a frame having a wall defining anopening therein, a plu rality of members of generally .u-cross-sectional shape mounted in said frame in parallel spaced relation across the opening therein, said U-shaped members each comprising a curvilinear base portion disposed tangent to a common plane and a pair of plane leg portions, the base and plane leg portions of the member extending perpendicular to the direction of parallel spacing of the members and spanning the opening between the frame wall with said leg portions extending from the base portion outwardly through the frame open.- ing with their free end edge. portions only pro iecting a. short distance beyond the said frame, the leg portions of each member being slightly divergent with respect to each other outwardly from. the base portion, and said divergent leg portions defining with the leg portions of adjacent members and the intermediate frame wall tubular discharge passages which are. convergent outwardly.
3. A grill construction comprising a. frame. having a wall defining an. opening therein, a plurality of members of generally U-cross-sectional. shape mountedin said frame in parallel spaced relation across the opening therein, said U..- shaped members each comprising a. curvilinear base portion and a pair of plane leg portions extending perpendicular to the direction of par-- allel spacing of the members and spanning the opening between the frame wall with. said le portions extending from the base portion outwardly through the frame opening with their free end edge portions only projecting a short distance beyond the said frame and disposed in a common plane, the leg portions of each member being slightly divergent with. respect to each divergent leg portions defining with the leg portions of adjacent members and the intermediate frame wall tubular discharge passages which are convergent outwardly.
4. A grill construction comprising a frame having a wall defining an opening therein, a plurality of members of. generally u -cross-sectional shape mounted said. frame in. parallel spaced relation across the opening therein, said U-shaped members each comprising a curvilinear base portion and a pair of plane leg portions extending perpendicular to the direction of parallel spacing of the members and spanning the opening between the frame wall with said leg portions extending from the base. portion outwardly through the frame opening with their free end edge portions only projecting a short distance beyond the said frame; each succeeding member outwardly in opposite direction from the central-most member being disposed at a greater acute angle than the preceding inner member, and the adjacent leg. portions of adjacent members and the intermediate frame Wall cooperating to define tubular discharge passages which are directly fanshapedly.
5. A. grill construction comprising a frame having a wall defining an opening-therein, a plurality of members of generally U-cross-sectional shape mounted in said frame in parallel spaced relation across the opening therein, said U-shaped members each comprising a curvilinear base portion disposed tangent to a common plane and a pair of plane leg portions, the base and plane leg portions of the member extending perpendicular to the direction of parallel spacing of the members and spanning the openingbetween the frame Wall with said leg portions extending from the base portion outwardly through the frame opening with their free end edge portions only projecting, a short distance beyond the said frame and disposed in a common plane, the leg portions of each member being slightly divergent with respect to each other outwardly from the base portion and defining with-the leg portions of adjacent members and the intermediate frame wall tubular discharge passages which are convergent outwardly, and each succeeding member in opposite directions from the central-most member beingdisposed at a greater acute angle than the preceding inner member to thereby define discharge passages which are directed fan-shapedly.
GEORG KARL JOHAN' BROBERG.
References Cited in the. file of this. patent UNITED STATES PATENTS Number Name. Date 1,671,107 Fric-ker May 29, 1,928 2,031,982 Salzman Feb. 25, 1936 2,224,312 ODay s Dec. 10-, 1940 2,300,574 Jepertinger Nov. 3, 1942 2,339,629 Fischer, Jr. Jan. 18, 194.4 2,339,855 Hodi'l et al. Jan. 25,, 19.44. 2,525,157 Trane F Oct. 10,, -0
FOREIGN PATENTS Number Country Date 533,139 Great Britain. Feb. 6, 1941
US110857A 1948-08-25 1949-08-17 Air supply grill Expired - Lifetime US2655857A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE2655857X 1948-08-25

Publications (1)

Publication Number Publication Date
US2655857A true US2655857A (en) 1953-10-20

Family

ID=20426814

Family Applications (1)

Application Number Title Priority Date Filing Date
US110857A Expired - Lifetime US2655857A (en) 1948-08-25 1949-08-17 Air supply grill

Country Status (4)

Country Link
US (1) US2655857A (en)
DE (1) DE814039C (en)
FR (1) FR993613A (en)
GB (1) GB665789A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3198246A (en) * 1962-03-26 1965-08-03 Trane Co Induction unit
US4008653A (en) * 1974-12-04 1977-02-22 Lear Siegler, Inc. Diffuser
US4693176A (en) * 1984-01-23 1987-09-15 Sulzer Brothers Limited Air outlet for room conditioning systems
US5184475A (en) * 1990-01-26 1993-02-09 Matsushita Electric Industrial Co., Ltd. Self-contained air conditioner
US6381976B1 (en) * 2001-04-27 2002-05-07 Carrier Corporation Wedge shaped refrigerated display case
CN107621006A (en) * 2017-09-01 2018-01-23 青岛海尔空调器有限总公司 Air-out component and the wall-hanging air conditioner with the air-out component
US20240174142A1 (en) * 2022-11-30 2024-05-30 Lear Corporation Air deflector
EP4378753A1 (en) * 2022-11-30 2024-06-05 Lear Corporation Air deflector

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2500146C2 (en) * 1975-01-03 1985-08-01 Rox Lufttechnische Gerätebau GmbH, 5000 Köln Slot outlet for air routing in ventilation devices and the like.
GB8916499D0 (en) * 1989-07-19 1989-09-06 Glidevale Building Prod Slot ventilator
DE4431314C2 (en) * 1994-09-02 1998-07-02 Ttl Tuer & Torluftschleier Luf Air outlet
DE29504426U1 (en) * 1995-03-15 1995-05-18 GEA Happel Klimatechnik GmbH, 44625 Herne Ceiling fan
DE19539283C2 (en) * 1995-10-21 1997-10-16 Nema Waermetauscher Gmbh Device for introducing a gaseous medium into a gas-filled room

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1671107A (en) * 1922-03-01 1928-05-29 Fricker Anthony Method of making clasps
US2031982A (en) * 1931-09-28 1936-02-25 Cleveland Graphite Bronze Co Method of making bearings
US2224312A (en) * 1935-01-17 1940-12-10 Preferred Utilities Company In Permanent outlet control device
GB533139A (en) * 1939-10-13 1941-02-06 Us Air Conditioning Internat I A device for the control of the diffusion of air from an air conditioning or ventilating machine or parts thereof
US2300574A (en) * 1938-11-09 1942-11-03 Modine Mfg Co Air mixer for unit heaters
US2339629A (en) * 1939-09-02 1944-01-18 Modine Mfg Co Diffusion grille
US2339855A (en) * 1942-05-05 1944-01-25 Ralph W Hodil Machine for testing adherence of sheet coatings
US2525157A (en) * 1946-01-05 1950-10-10 Trane Co Air distributor

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1671107A (en) * 1922-03-01 1928-05-29 Fricker Anthony Method of making clasps
US2031982A (en) * 1931-09-28 1936-02-25 Cleveland Graphite Bronze Co Method of making bearings
US2224312A (en) * 1935-01-17 1940-12-10 Preferred Utilities Company In Permanent outlet control device
US2300574A (en) * 1938-11-09 1942-11-03 Modine Mfg Co Air mixer for unit heaters
US2339629A (en) * 1939-09-02 1944-01-18 Modine Mfg Co Diffusion grille
GB533139A (en) * 1939-10-13 1941-02-06 Us Air Conditioning Internat I A device for the control of the diffusion of air from an air conditioning or ventilating machine or parts thereof
US2339855A (en) * 1942-05-05 1944-01-25 Ralph W Hodil Machine for testing adherence of sheet coatings
US2525157A (en) * 1946-01-05 1950-10-10 Trane Co Air distributor

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3198246A (en) * 1962-03-26 1965-08-03 Trane Co Induction unit
US4008653A (en) * 1974-12-04 1977-02-22 Lear Siegler, Inc. Diffuser
US4693176A (en) * 1984-01-23 1987-09-15 Sulzer Brothers Limited Air outlet for room conditioning systems
US5184475A (en) * 1990-01-26 1993-02-09 Matsushita Electric Industrial Co., Ltd. Self-contained air conditioner
US6381976B1 (en) * 2001-04-27 2002-05-07 Carrier Corporation Wedge shaped refrigerated display case
CN107621006A (en) * 2017-09-01 2018-01-23 青岛海尔空调器有限总公司 Air-out component and the wall-hanging air conditioner with the air-out component
CN107621006B (en) * 2017-09-01 2020-04-24 青岛海尔空调器有限总公司 Air outlet assembly and wall-mounted air conditioner with same
US20240174142A1 (en) * 2022-11-30 2024-05-30 Lear Corporation Air deflector
EP4378753A1 (en) * 2022-11-30 2024-06-05 Lear Corporation Air deflector
JP2024079654A (en) * 2022-11-30 2024-06-11 リア・コーポレーション Air Deflector

Also Published As

Publication number Publication date
GB665789A (en) 1952-01-30
DE814039C (en) 1951-09-17
FR993613A (en) 1951-11-05

Similar Documents

Publication Publication Date Title
US2655857A (en) Air supply grill
US2811094A (en) Ventilator grill
JPS5928225Y2 (en) Plate heat exchanger
US2662553A (en) Gaseous fluid flow system
US2007374A (en) Acoustical roof deck
US4582296A (en) Composite blade for dampers for ducts of large cross sectional areas
US2464442A (en) Register construction
US2560802A (en) Laminar counterflow grille
US2390983A (en) Screen
US2552982A (en) Adjustable grille construction
US941367A (en) Register or ventilator.
US3232206A (en) Face plate for an air distribution outlet
US2068236A (en) Radiator
US2625873A (en) Grille
US3217627A (en) Side wall diffuser
US1975957A (en) Radiator
US3431973A (en) Heat exchangers
US2612096A (en) Adjustable air distribution grille
US2136992A (en) Heating structure for drying, ironing, calendering, and similar machines
US2635525A (en) Air distribution outlet
US1652055A (en) Panel
US1313460A (en) Constructive design of face-plat
US1247677A (en) Top plate for registers and ventilators.
US3529391A (en) Grated opening
US725115A (en) Metallic lath.