US2470488A - Air flow control means - Google Patents
Air flow control means Download PDFInfo
- Publication number
- US2470488A US2470488A US565509A US56550944A US2470488A US 2470488 A US2470488 A US 2470488A US 565509 A US565509 A US 565509A US 56550944 A US56550944 A US 56550944A US 2470488 A US2470488 A US 2470488A
- Authority
- US
- United States
- Prior art keywords
- openings
- conduit
- air
- cap member
- control means
- 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
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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
- F24F13/02—Ducting arrangements
- F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
Definitions
- thev inventions consists: in. arrA air# flow' control means embodying.' the; novel features' of: construction',4 combination andi arrangement:vv oiparts ⁇ as willbe hereinaftermora fnily described, illustrated. in the accompanying. drafwinga and defined. in the appended claims.A
- Figure 1 is'A a central, longitudinal sectionv through an air flow control means constructedin accordanc'efE with; the invention
- Figure 2 is arr end view/of. the control means shown in Fig. 1;
- Figure 3 is a ⁇ view similar to-Fig: 1 of an air flow controlmeansf of alternative form.v
- lill desigv nates, according to each form of the invention, the cylindrical outlet end portionof a supply conduit, for air to be usedv for heating, cooling on other punposes, designatesiaf disk-lilrewall emendingy across the end of said conduiaand; I2 designates,.generally, a cap membeneng-agediover said conduit end portion and rotatable with respect thereto.
- the cap member I2 includes a cylindrical side 4 Glaims.. (CL, 98-40.)-
- wall IFI whichcloselis embracesl the conduit. end portion; Ill: and; has therein anv annular rowof openingsf I and? intermediatefclosed portions
- .Slfy which; are substantiallyl duplicates: ofthe conduitl side wailropenings; le andiintetmediatetclosed.por-
- theain deflector z may be'replacedf by ⁇ an: air deflector ofi any ⁇ otherl form. to causey ain discharged throught the; openings
- 8 to have any desired; direction of flow relativeto the conduit Il); Gbviously, too;v the ⁇ devicel may be devoid ot any:- air? delector fon controlling. the directionof ⁇ flow of; ainy dischargedt throughf the openings I3 and I8, 'in which event the ilow from said openings will be laterally relative to the conduit I.
- air deflector means may be provided, if desired, to cause air discharged through the openings I5 and 2
- the portion of the side wall I'I of the cap member I2 rearwardly of the openings I8 is turned outwardly and forwardly in overlying relationship to said openings I8 to provide an annular air deflector 24 which is effective to cause air discharged through the openings I3 and I8 to take a direction of ow outwardly and forwardly relative to the device.
- the air deflector 24 may be a part separate from the cap member I2. Also, according to the construction shown in Fig.
- the end walls II and I9 are of rearwardly and inwardly inclined conical form and the edges of the openings I5 and 2
- the cap member I2 may be connected to the conduit end portion I8 in any suitable manner as, for example, by means of a rivet 25 or the like extending centrally through the end walls II and 20. Also, any suitable means may be provided for use in effecting rotation of the cap member I2. For example, said cap member may be provided with one or more hand or foot engageable arms 26 extending laterally therefrom as shown in Fig. 3.
- Air ow control means comprising an air supply conduit member including side and end walls each having therein an annular row of spaced apart openings for outlet of air therefrom, and a cap member rotatably mounted on said conduit member and including side and end walls each having therein an annular row of spaced apart openings for alinement with and disaline ⁇ ment from the openings of the corresponding row in the side and end walls of said conduit member, respectively, by rotation of said cap member relative to said conduit member, thereby to control discharge of air from said conduit member through the sets of openings in the side and end walls thereof, respectively, and air deflector means mounted on one of said members and disposed to intercept air discharged through the openings in the side walls of said conduit member and said cap member and to cause it to take a desired direction of flow relative to the direction of flow of air discharged through the openings in the end walls of said conduit and said cap members, said air deflector means extending around said cap member and being open at one end and closed at its other end and being secured at its closed end to the member on which
- Air flow control means comprising an air supply conduit member including side and end walls each having therein an annular row of spaced apart openings for outlet of air therefrom, and a cap member rotatably mounted on said conduit member and including side and end walls each having therein an annular row of spaced apart openings for alinement with and disalinement from the openings of the corresponding row in the side and end Walls of said conduit member, respectively, by rotation of said cap member relative to said conduit member, thereby to control discharge of air from said conduit member through the sets of openings in the side and end walls thereof, respectively, and air deflector means carried by and extending from the side wall of said cap member into overlying relationship to the openings in said side wall to intercept air discharged through said side wall openings and to cause it to take a desired direction of flow relative to the direction of ow of air discharged through the openings in the end walls of said conduit and said cap members, said air deflector means extending around said cap member and being open at one end and closed at its other end and being secured at its closed
- Air flow control means comprising an air supply conduit including side and end walls each having therein an annular row of spaced apart openings for outlet of air therefrom, and a cap member rotatably mounted on said conduit and including side and end walls each having therein an annular row of spaced apart openings for alinement with and disalinement from the openings of the corresponding row in the side and end walls of said conduit, respectively, by rotation of said cap member relative to said conduit, thereby to control discharge of air from said conduit through the sets of openings in the side and end Walls thereof, respectively, the end walls of saidv conduit and said cap member being of rearwardly and inwardly inclined conical form and the inner and outer edges of the openings in said end walls being disposed perpendicularly to sai-d walls so that air discharged through the openings in said end walls is caused to flow toward a forward prolongation of the axis of the conduit.
- Air flow control means as set forth in claim 1 in which the inner end portion of the cap member is extended outwardly and forwardly relative to said cap member to provide the air deflector FRIEDRICH HONERKAMP. FRANZ J. KURTH.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Duct Arrangements (AREA)
- Air-Flow Control Members (AREA)
Description
F. HONERKAMP 'ET AL AIR FLOW CONTROL MEANS Original Filed Aug. 16, 1945 Patented May 17, 1949 AIR'FLOW' CONTROLMEAN S Friedrich Horner-kampand Franz; Ji KfurtligNew."V
York; N; EL, assignors to .f Anemostat; Comtforaff-A tiomof America; ,New York,.,N-'. .Y.,.a corporationf of Delawarev Original' application August` 1'6; 1943, Serial No. 498,842. DividedA and this implicationA NiwemA belYZS, 11944; SrialNo. 5652509 rangement ofrpantsfwherebyair may-be causedl tov be'. delivered` im itsa entirety in? eithen off two dii- 'erent.; directions or'r manners?,l orE in, part in one ofsaid directions or; mannersand impart in the other" of said directionsv or manners; byready. andeasg manipulant/:lohnt a-,very simpleform` of valve element.v
Wit-lry the' foregoing: general object.. in view, thev inventions consists: in. arrA air# flow' control means embodying.' the; novel features' of: construction',4 combination andi arrangement:vv oiparts` as willbe hereinaftermora fnily described, illustrated. in the accompanying. drafwinga and defined. in the appended claims.A
InV the accompanying drawings,` wherein` like chanacters ofi reference denotecorresponding pants ini the; diienerrt .views:.
Figure 1. is'A a central, longitudinal sectionv through an air flow control means constructedin accordanc'efE with; the invention;
Figure 2 is arr end view/of. the control means shown in Fig. 1; and
Figure 3 is a` view similar to-Fig: 1 of an air flow controlmeansf of alternative form.v
Referring to the drawings in, detail, lill desigv nates, according to each form of the invention, the cylindrical outlet end portionof a supply conduit, for air to be usedv for heating, cooling on other punposes, designatesiaf disk-lilrewall emendingy across the end of said conduiaand; I2 designates,.generally, a cap membeneng-agediover said conduit end portion and rotatable with respect thereto.
In thef, side wall of the'co-nduita end portion' IlldsI arrV annular row of` openings# |31 and; intermediate ciosed portions III of approximately, equalwidths and lengths, while in the end wall II is another annular row of openings I5 and intermediate closed portions |6 which, likewise, are of approximately equal widths and lengths. Moreover, the openings I3 and the closed portions I4 are of approximately the same lengths, angularly, as the openings I5 and the closed portions I8.
The cap member I2 includes a cylindrical side 4 Glaims.. (CL, 98-40.)-
2. wall IFI whichcloselis embracesl the conduit. end portion; Ill: and; has therein anv annular rowof openingsf I and? intermediatefclosed portions |.Slfy which; are substantiallyl duplicates: ofthe conduitl side wailropenings; le andiintetmediatetclosed.por-
tionsr Uhrespectivelyf In additionflsaidtcap member( |-2includesla;dislrelilterendfwall wlfiich,o.ver lies the' conduit. end: wall II- and has thereint anannular rowf off openings Zl.- and intermediateclosed portions 22 which are substantially: du.` plicatesZ of the conduit-.end wall openings |Iiy and intermediate closed: portions I6, respectively.
Either the openings,.- and |5-.ar.e,r.adial1y dis.- alined and theI openings; I3: and' 20' are radially alined or: vice.averse..`Y I nteitherv case, rotation of` t-hcicapmember. |-2-ftota1inethe-openings. Hit-here-v otwith the openings |13. will disaline thev openings-1 2| from the openings I5 and vicefver-sal. It,folV lows, therefore, that by rotatably adjusting said cap member' discharge, ofain :from the conduit endyportion: |IJ may. be., caused1 tubeV entirely. from.
the side or from the end. thereof: or partly. from.
the side and partlyfmm, they end. thereof.
Accor-ding. to. theA constructionv shown. in Figs.A
,Y Land 2, anfannular air deeotor 23, is` carried.
by.` andisunroundsfthecap member. h2 andin? cross` section,. extends" from. they side: wall. |-1. of said*y cap member., ,forwardly of theyopenings- Iii` therein,l outwardlyu andv rearwardly. in overlying` relation-4 ship-tosaid openings, I8., Accordingly, when. tine.'Y openings` |`3y and I8? arealined, or partly alined air iiowingthrough theA same from` the conduit- IfIl' will be deflected rearvvardly` relative to saidconduit. On the otherl hand, accordingV to. they Figs. 1, and 2: constnuction. theJ endg walls I l' and.
|l9- are flat.l andf the) edges of; the A openings |5- andV 2t insaid end-wal1sresnectiuely, are parallel to. thefaxis oftheconduit'sothat'when these open ingsi are` alined; on partlyr alined,` air discharged throughA the same-'fnonrgtheconduit has-fa directionof flow fonwandlyfnelativetotheconduit.
@briouslyg theain deflector zmay be'replacedf by` an: air deflector ofi any` otherl form. to causey ain discharged throught the; openings |31` and` |8 to have any desired; direction=of flow relativeto the conduit Il); Gbviously, too;v the` devicel may be devoid ot any:- air? delector fon controlling. the directionof\ flow of; ainy dischargedt throughf the openings I3 and I8, 'in which event the ilow from said openings will be laterally relative to the conduit I. Furthermore, air deflector means may be provided, if desired, to cause air discharged through the openings I5 and 2| to follow any desired direction of flow relative to the device.
According to the construction shown in Fig. 3,
the portion of the side wall I'I of the cap member I2 rearwardly of the openings I8 is turned outwardly and forwardly in overlying relationship to said openings I8 to provide an annular air deflector 24 which is effective to cause air discharged through the openings I3 and I8 to take a direction of ow outwardly and forwardly relative to the device. Alternatively, the air deflector 24 may be a part separate from the cap member I2. Also, according to the construction shown in Fig. 3, the end walls II and I9 are of rearwardly and inwardly inclined conical form and the edges of the openings I5 and 2| are at right angles to said walls so that air discharged through said openings is caused to have a direction of flow toward a prolongation of the axis of the conduit I0. If desired, this same effect may be attained in a construction as illustrated in Figs. 1 and 2 by inclning the side edges of the openings I5 and 2|.
The cap member I2 may be connected to the conduit end portion I8 in any suitable manner as, for example, by means of a rivet 25 or the like extending centrally through the end walls II and 20. Also, any suitable means may be provided for use in effecting rotation of the cap member I2. For example, said cap member may be provided with one or more hand or foot engageable arms 26 extending laterally therefrom as shown in Fig. 3.
Without further description it is thought that the features and advantages of the invention will be readily apparent to those skilled in the art, and it will of course be understood that changes in the form, proportion and minor details of construction may be resorted to, without departing from the spirit of the invention and scope of the appended claims.
We claim:
1. Air ow control means comprising an air supply conduit member including side and end walls each having therein an annular row of spaced apart openings for outlet of air therefrom, and a cap member rotatably mounted on said conduit member and including side and end walls each having therein an annular row of spaced apart openings for alinement with and disaline` ment from the openings of the corresponding row in the side and end walls of said conduit member, respectively, by rotation of said cap member relative to said conduit member, thereby to control discharge of air from said conduit member through the sets of openings in the side and end walls thereof, respectively, and air deflector means mounted on one of said members and disposed to intercept air discharged through the openings in the side walls of said conduit member and said cap member and to cause it to take a desired direction of flow relative to the direction of flow of air discharged through the openings in the end walls of said conduit and said cap members, said air deflector means extending around said cap member and being open at one end and closed at its other end and being secured at its closed end to the member on which it is mounted.
2. Air flow control means comprising an air supply conduit member including side and end walls each having therein an annular row of spaced apart openings for outlet of air therefrom, and a cap member rotatably mounted on said conduit member and including side and end walls each having therein an annular row of spaced apart openings for alinement with and disalinement from the openings of the corresponding row in the side and end Walls of said conduit member, respectively, by rotation of said cap member relative to said conduit member, thereby to control discharge of air from said conduit member through the sets of openings in the side and end walls thereof, respectively, and air deflector means carried by and extending from the side wall of said cap member into overlying relationship to the openings in said side wall to intercept air discharged through said side wall openings and to cause it to take a desired direction of flow relative to the direction of ow of air discharged through the openings in the end walls of said conduit and said cap members, said air deflector means extending around said cap member and being open at one end and closed at its other end and being secured at its closed end to said cap member.
3. Air flow control means comprising an air supply conduit including side and end walls each having therein an annular row of spaced apart openings for outlet of air therefrom, and a cap member rotatably mounted on said conduit and including side and end walls each having therein an annular row of spaced apart openings for alinement with and disalinement from the openings of the corresponding row in the side and end walls of said conduit, respectively, by rotation of said cap member relative to said conduit, thereby to control discharge of air from said conduit through the sets of openings in the side and end Walls thereof, respectively, the end walls of saidv conduit and said cap member being of rearwardly and inwardly inclined conical form and the inner and outer edges of the openings in said end walls being disposed perpendicularly to sai-d walls so that air discharged through the openings in said end walls is caused to flow toward a forward prolongation of the axis of the conduit.
4. Air flow control means as set forth in claim 1 in which the inner end portion of the cap member is extended outwardly and forwardly relative to said cap member to provide the air deflector FRIEDRICH HONERKAMP. FRANZ J. KURTH.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 38,370 Boynton May 5, 1863 1,548,390 Schloe Aug. 4, 1925 1,801,568 Petrelli Apr. 21, 1931 FOREIGN PATENTS Number Country Date 11,661 Great Britain 1905 20,981 Great Britain 1903
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US565509A US2470488A (en) | 1943-08-16 | 1944-11-28 | Air flow control means |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US498842A US2466851A (en) | 1943-08-16 | 1943-08-16 | Air flow control means |
US565509A US2470488A (en) | 1943-08-16 | 1944-11-28 | Air flow control means |
Publications (1)
Publication Number | Publication Date |
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US2470488A true US2470488A (en) | 1949-05-17 |
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ID=27052967
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US565509A Expired - Lifetime US2470488A (en) | 1943-08-16 | 1944-11-28 | Air flow control means |
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US (1) | US2470488A (en) |
Cited By (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2672087A (en) * | 1950-05-16 | 1954-03-16 | Aladdin Heating Corp | Air distributing device |
US2869449A (en) * | 1954-11-26 | 1959-01-20 | Trane Co | Air diffusing device |
US2923224A (en) * | 1956-11-20 | 1960-02-02 | Thermotank Inc | Air distributor |
US3092009A (en) * | 1960-03-10 | 1963-06-04 | Mc Graw Edison Co | Diffuser |
US3181793A (en) * | 1961-10-23 | 1965-05-04 | Jet Heet Inc | Integral hot air space heating and water heating system |
DE3131819A1 (en) * | 1980-09-24 | 1982-04-22 | Stopinc AG, 6340 Baar | "COUPLING PLATE PAIR FOR A SLIDE LOCK" |
US5218998A (en) * | 1992-04-01 | 1993-06-15 | Bakken Gary M | Linearly adjustable |
US5427146A (en) * | 1994-06-27 | 1995-06-27 | Bakken; Gary M. | Linearly adjustable fluid damper |
US5602435A (en) * | 1993-08-17 | 1997-02-11 | Abb Management Ag | Gas-cooled electrical machine |
US6361432B1 (en) * | 1999-08-17 | 2002-03-26 | Tomkins Industries, Inc. | Air diffuser with air flow regulator |
US20070092374A1 (en) * | 2005-10-12 | 2007-04-26 | Zamalis Michael H | Air Diffuser |
US20070180848A1 (en) * | 2006-02-07 | 2007-08-09 | Emerson Network Power S.R.L. | Conditioning device of the free cooling type |
US20120330159A1 (en) * | 2010-12-22 | 2012-12-27 | Amir Orome | Needle Guide with Selectable Aspects |
US20130299207A1 (en) * | 2012-05-10 | 2013-11-14 | Black & Decker, Inc. | Power tool cooling |
US20130337737A1 (en) * | 2012-06-14 | 2013-12-19 | International Business Machines Corporation | Compressed gas cylinder cabinet with regulated exhaust control |
US20160059252A1 (en) * | 2014-09-02 | 2016-03-03 | J. Wagner Gmbh | Paint spray system and air control mechanism for a paint spray system |
DE102005045194B4 (en) * | 2005-09-21 | 2016-06-09 | Fev Gmbh | Guide for a turbo compressor of an internal combustion engine |
US9874369B2 (en) | 2013-11-21 | 2018-01-23 | Nejat Babur | Constant total orifice area damper |
US9974516B2 (en) | 2010-12-22 | 2018-05-22 | C. R. Bard, Inc. | Selectable angle needle guide |
US20180309345A1 (en) * | 2015-09-30 | 2018-10-25 | Siemens Aktiengesellschaft | Electric Machine with Variable Cooling System |
US10231697B2 (en) | 2008-12-18 | 2019-03-19 | C. R. Bard, Inc. | Needle guides for a sonographic imaging device |
US10498197B2 (en) * | 2017-05-08 | 2019-12-03 | GM Global Technology Operations LLC | Vehicle propulsion system and electric motor for a vehicle propulsion system |
US10863970B2 (en) | 2008-12-18 | 2020-12-15 | C. R. Bard, Inc. | Needle guide including enhanced visibility entrance |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US38370A (en) * | 1863-05-05 | Improvement in ventilating-dampers | ||
GB190320981A (en) * | 1903-09-30 | 1904-07-28 | Edwin Woods | Improvements in Ventilators. |
GB190511661A (en) * | 1905-06-03 | 1905-07-20 | John Levick | Improvements in Ventilators for Railway and other Carriages, and for Analogous Uses |
US1548390A (en) * | 1923-12-14 | 1925-08-04 | Hugo C Schloe | Car-heater register |
US1801568A (en) * | 1930-01-09 | 1931-04-21 | Joseph V Petrelli | Register or damper |
-
1944
- 1944-11-28 US US565509A patent/US2470488A/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US38370A (en) * | 1863-05-05 | Improvement in ventilating-dampers | ||
GB190320981A (en) * | 1903-09-30 | 1904-07-28 | Edwin Woods | Improvements in Ventilators. |
GB190511661A (en) * | 1905-06-03 | 1905-07-20 | John Levick | Improvements in Ventilators for Railway and other Carriages, and for Analogous Uses |
US1548390A (en) * | 1923-12-14 | 1925-08-04 | Hugo C Schloe | Car-heater register |
US1801568A (en) * | 1930-01-09 | 1931-04-21 | Joseph V Petrelli | Register or damper |
Cited By (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2672087A (en) * | 1950-05-16 | 1954-03-16 | Aladdin Heating Corp | Air distributing device |
US2869449A (en) * | 1954-11-26 | 1959-01-20 | Trane Co | Air diffusing device |
US2923224A (en) * | 1956-11-20 | 1960-02-02 | Thermotank Inc | Air distributor |
US3092009A (en) * | 1960-03-10 | 1963-06-04 | Mc Graw Edison Co | Diffuser |
US3181793A (en) * | 1961-10-23 | 1965-05-04 | Jet Heet Inc | Integral hot air space heating and water heating system |
DE3131819A1 (en) * | 1980-09-24 | 1982-04-22 | Stopinc AG, 6340 Baar | "COUPLING PLATE PAIR FOR A SLIDE LOCK" |
US5218998A (en) * | 1992-04-01 | 1993-06-15 | Bakken Gary M | Linearly adjustable |
US5602435A (en) * | 1993-08-17 | 1997-02-11 | Abb Management Ag | Gas-cooled electrical machine |
US5427146A (en) * | 1994-06-27 | 1995-06-27 | Bakken; Gary M. | Linearly adjustable fluid damper |
US6361432B1 (en) * | 1999-08-17 | 2002-03-26 | Tomkins Industries, Inc. | Air diffuser with air flow regulator |
DE102005045194B4 (en) * | 2005-09-21 | 2016-06-09 | Fev Gmbh | Guide for a turbo compressor of an internal combustion engine |
US20070092374A1 (en) * | 2005-10-12 | 2007-04-26 | Zamalis Michael H | Air Diffuser |
US20070180848A1 (en) * | 2006-02-07 | 2007-08-09 | Emerson Network Power S.R.L. | Conditioning device of the free cooling type |
US11534140B2 (en) | 2008-12-18 | 2022-12-27 | C. R. Bard, Inc. | Needle guide including enhanced visibility entrance |
US10863970B2 (en) | 2008-12-18 | 2020-12-15 | C. R. Bard, Inc. | Needle guide including enhanced visibility entrance |
US10231697B2 (en) | 2008-12-18 | 2019-03-19 | C. R. Bard, Inc. | Needle guides for a sonographic imaging device |
US20120330159A1 (en) * | 2010-12-22 | 2012-12-27 | Amir Orome | Needle Guide with Selectable Aspects |
US9788812B2 (en) * | 2010-12-22 | 2017-10-17 | C. R. Bard, Inc. | Needle guide with selectable aspects |
US9974516B2 (en) | 2010-12-22 | 2018-05-22 | C. R. Bard, Inc. | Selectable angle needle guide |
US20130299207A1 (en) * | 2012-05-10 | 2013-11-14 | Black & Decker, Inc. | Power tool cooling |
US20130337737A1 (en) * | 2012-06-14 | 2013-12-19 | International Business Machines Corporation | Compressed gas cylinder cabinet with regulated exhaust control |
US9874369B2 (en) | 2013-11-21 | 2018-01-23 | Nejat Babur | Constant total orifice area damper |
US20160059252A1 (en) * | 2014-09-02 | 2016-03-03 | J. Wagner Gmbh | Paint spray system and air control mechanism for a paint spray system |
US20180309345A1 (en) * | 2015-09-30 | 2018-10-25 | Siemens Aktiengesellschaft | Electric Machine with Variable Cooling System |
US10826352B2 (en) * | 2015-09-30 | 2020-11-03 | Siemens Aktiengesellschaft | Electric machine with variable cooling system |
US10498197B2 (en) * | 2017-05-08 | 2019-12-03 | GM Global Technology Operations LLC | Vehicle propulsion system and electric motor for a vehicle propulsion system |
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