US3731598A - Fluid pressure operated motor or generator - Google Patents

Fluid pressure operated motor or generator Download PDF

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Publication number
US3731598A
US3731598A US00160452A US3731598DA US3731598A US 3731598 A US3731598 A US 3731598A US 00160452 A US00160452 A US 00160452A US 3731598D A US3731598D A US 3731598DA US 3731598 A US3731598 A US 3731598A
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US
United States
Prior art keywords
pressure
blade
operating blade
casing section
main casing
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
US00160452A
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English (en)
Inventor
A Brignon
M Durand
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.)
Compagnie des Freins et Signaux Westinghouse SA
Westinghouse Air Brake Co
Original Assignee
Compagnie des Freins et Signaux Westinghouse SA
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 Compagnie des Freins et Signaux Westinghouse SA filed Critical Compagnie des Freins et Signaux Westinghouse SA
Application granted granted Critical
Publication of US3731598A publication Critical patent/US3731598A/en
Assigned to CHASE MANHATTAN BANK (NATIONAL ASSOCIATION), THE reassignment CHASE MANHATTAN BANK (NATIONAL ASSOCIATION), THE SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: RAIL ACQUISITION CORP.
Anticipated expiration legal-status Critical
Assigned to WESTINGHOUSE AIR BRAKE COMPANY reassignment WESTINGHOUSE AIR BRAKE COMPANY ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: AMERICAN STANDARD INC., A DE CORP.
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/12—Characterised by the construction of the motor unit of the oscillating-vane or curved-cylinder type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C9/00—Oscillating-piston machines or engines

Definitions

  • ABSTRACT A fluid pressure operable rotary motor or generator characterized by a pressure blade fixed to a shaft for effecting limited angular rotation of the shaft about its axis in opposite directions, the direction of said rotation being determined by the dominant pressure of two opposing pressures acting on respective opposite sides of said blade which is mounted in a single-piece casing section to accommodate said limited angular rotation of the blade, said blade having peripherally disposed sealing means thereon for making sealing contact with the inner surface of said casing section thereby sealingly isolating said opposite sides of the blade.
  • ATTORNEY FLUID PRESSURE OPERATED MOTOR OR GENERATOR BACKGROUND OF THE INVENTION may be varied in accordance with a function of the supply pressure.
  • fluid pressure motors characterized by a shaft rotatable in limited opposite directions by a blade subjectable to different pressures on its respective opposite sides
  • known devices have certain objectionable features as compared to the present invention.
  • one objectionable feature of some of the known devices is the fact that the housing comprises two symmetrical half-sections joined together in clam-like fashion to form said housing in which the blade must rotate. Not only must the two half-sections be joined together inan air-tight relationship, but they must also have smooth inner surfaces against which the blade must move in an air-tight relationship.
  • the type of housing made of two facing halfsections however, by necessity has a joint line over which the blade must travel when operating, and since the machining and fitting together of two symmetrical half-sections of a housing to form a smooth inner surface is difficult, there is a great possibilitY that maximum sealing effect of blade against said inner surface will not be attained.
  • the object of the present invention is to provide an improved fluid pressure operable motor of the type having a shaft rotatable in opposite directions, within angular limits, by an operating blade making sealing contact with the inner surface of a housing and being subjectable on opposite sides to variable fluid pressure for effecting rotation thereof and of said shaft, said invention being characterized in that the inner surface of said housing with which said blade makes contact is free ofjoint lines or seams.
  • FIG. 2 is an elevational view, in section, taken along line 11-" of FIG. 1.
  • the fluid pressure motor embodying the invention comprises a main casing section 1 which may be moulded in a single piece from a plastic, or other suitable material, for example, with an opening at one end thereof.
  • the main casing section 1 comprises two flat sides 2 and 3 disposed parallel to each other (see FIG. 2) with a shaft 4 extending perpendicularly thereacross and having the ends thereof journaled for rotation in said sides, respectively, at a convenient location to be more fully explained.
  • Main casing section 1 further comprises two cylindrical sectors 5 and 6 radially centered on the axis of shaft
  • the object of the invention is attained by providing a main'section of a housing which may be molded in one piece for accommodating a blade fixed to a shaft, for rotation together about the axis of the shaft, in opposite directions, and within predetermined angular limits.
  • the respective ends of the shaft are journaled on the opposite side walls of the main casing section.
  • the outer or peripheral edge of the blade is contoured to the cross-sectional shape of the inner surface of the main casing section with which said outer edge makes sealing contact.
  • Cylindrical sector 5 is integrally joined to flat sides 2 and 3 by annular curved casing portions 7 and 8, respectively, to form a casing sector 9
  • cylindrical sector 6 is also integrally joined to said flat sides by annular curved casing portions (not shown) to form a casing sector 10 of smaller diameter than casing sector 9. If an intersecting plane in which the axis of shaft 4 lies were extended radially through either of the casing sectors 9 and 10, the cross section of said casing sectors formed with said intersecting planes would be substantially U-shaped, as may be clearly seen in FIG. 2.
  • Casing sectors 9 and 10 are integrally joined by ajoining section 11 in which a port 12 is formed.
  • An operating blade 13 is coaxially secured to the shaft 4 for rotation therewith, said blade comprising two arms 14 and 15 extending radially from said shaft toward the cylindrical sectors 5 and 6, respectively, of the main casing section 1.
  • the peripheral or outer contours of the arms 14 and 15 are shaped to conform to the internal cross-sectional contour of the casing sectors 9 and 10, respectively, such contour conformance of the arm 14, for example, with casing sector 9 being clearly shown in FIG. 2 of the drawing. 7
  • the operating blade 13 is provided with an endless groove 16, portions 17 and 18 of said groove running along the peripheral or outer edges of the two arms 14 and 15, and being connected with each other by arcuate portions 19 and 20 fqrmed'on the outer ends. of the hub of the operating blade in concentric relation to the axis thereof and on the sector of said hub opposite the casing sectors 9 and 10.
  • An endless sealing element 21 made of a resilient material such as rubber, for example, is disposed in the groove 16 so as to provide sealing contact between the blade 13 and the inner surfaces of the main housing section 1, said inner surfaces comprising those of the cylindrical sectors 9 and 10, of the flat sides 2 and 3, of the annular curved portions 7 and 8, and of the annular curved portions (not shown) connecting sector 6 to said flat sides.
  • the arms 14 and 15 of operating blade 13 cooperate with the sealing element 21 and easing sections 1 and 22 to form two chambers 23 and 24 therein, said chamber 23 being open to port 12 in joining portion 11, and chamber 24 being open to a port 25 formed in cover section 22.
  • Sealing rings 26 and 27 are disposed at each end of and in concentric relation to the hub of the operating blade 13 to make sealing contact with the inner surfaces of the flat sides 2 and 3, respectively, thereby preventing any leakage of fluid pressure from chamber 23 via journals 28 and 29 in which the respective ends of shaft 4 are rotatably supported.
  • the angle subtended by the arms 14 and 15 to form chamber 23 is approximately 90 or slightly less, though such angle need not be limited to such size.
  • the total angular displacement of operating blade 13 is also approximately 90, as shown in FIG. 1, said angular displacement being limited in a clockwise direction, as viewed in FIG. 1, by abutment of arm 14 with a conforming stop surface 30 formed adjacent chamber 23 on joining wall 11.
  • Angular displacement of operating blade 13 in a counterclockwise direction is limited by abutment ofarm 14 with a conforming stop surface 31 formed adjacent chamber 24 on an extended portion of cover section 22 in which port 25 is formed.
  • the motor device embodying the invention is operated by introducing fluid pressure into one or the other or both of the ports 12 and 25. Depending on the dominating pressure acting on the arms 14 and 15 of the operating blade 13, said operating blade is rotated accordingly. For example, if chamber 24 is supplied with fluid under pressure via port 25, the adjacent sides of arms 14 and 15 are subjected to such fluid pressure and, therefore, to directionally opposed directional torques. Since the area of arm 14 subjected to fluid.
  • the shaft 4 is normally connected to some member for effecting operation of a device such as a valve (not shown) requiring a quarter turn for operating the valve to an open position, for example.
  • the motor described herein and embodying the invention may also be used as a compressor by connecting alternating rotating drive means (not shown) to the shaft 4 and connecting one of the ports 12 or 25 to aspiration and delivery valve means (not shown).
  • lfA fluid operable motor comprising:
  • a. a casing comprising:
  • a one-piece main casing section open at one end and having a first sector portion adjoining a second sector portion of smaller radius than said first sector portion relative to a common axis disposed perpendicularly to said main casing section, ii. a cover section for sealingly closing said open end of said main casing section;
  • a shaft supportedin said main casing section for rotation about said axis;
  • an operating blade carried by said shaft and rotatable therewith in opposite directions, said operating blade sealingly dividing the easing into a first pressure chamber and a second pressure chamber and comprising two angularly-spaced arms corresponding in radial length to the radii of said first and second sector portions, respectively, and each presenting respective pressure areas on respective opposite sides thereof adjacent to and subjectable to fluid pressure prevailing in said first and second pressure chambers, said angularly-spaced arms having sealing contact only with said main casing section during rotation thereof,
  • said first pressure chamber being defined on one side of the operating blade by the two arms and the adjacent portion of the casing
  • said second pressure chamber being defined on the opposite side of the operating blade by the two arms and the adjacent portion of the casing
  • said operating blade being rotatable responsively to pressure differential established between the respective pressure areas of the two arms on the same side of said operating blade adjacent the one of-said pressure chambers provided with dominating fluid pressure, the direction of rotation of said operating blade being determined by which of said pressure chambers is provided with the dominating pressure.
  • a fluid pressure operable motor as set forth in claim 1, further characterizedby:
  • a fluid pressure operable motor as set forth in claim 1, further characterized by stop means in said casing for limiting rotation of said operating blade in both directions.
  • a fluid pressure operable motor as set forth in claim 3, wherein said main casing section is characterized by a seamless structure.
  • a fluid pressure operable motor as set forth in.
  • stop means are so disposed as to limit the total rotation of said operating blade wholly within said main casing section.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Actuator (AREA)
  • Hydraulic Motors (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Reciprocating Pumps (AREA)
US00160452A 1970-08-13 1971-07-07 Fluid pressure operated motor or generator Expired - Lifetime US3731598A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7029786A FR2109064A5 (sv) 1970-08-13 1970-08-13

Publications (1)

Publication Number Publication Date
US3731598A true US3731598A (en) 1973-05-08

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ID=9060153

Family Applications (1)

Application Number Title Priority Date Filing Date
US00160452A Expired - Lifetime US3731598A (en) 1970-08-13 1971-07-07 Fluid pressure operated motor or generator

Country Status (8)

Country Link
US (1) US3731598A (sv)
AT (1) AT307820B (sv)
CH (1) CH536933A (sv)
DE (1) DE2138918C3 (sv)
FR (1) FR2109064A5 (sv)
GB (1) GB1338508A (sv)
NL (1) NL7111202A (sv)
SE (1) SE374948B (sv)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4192224A (en) * 1976-12-17 1980-03-11 Toyota Jidosha Kogyo Kabushiki Kaisha Rotary master cylinder means
WO1982000045A1 (en) * 1980-06-23 1982-01-07 J Bridwell Contaminant trap for fluid operated rotary actuator
US4345509A (en) * 1980-06-23 1982-08-24 Caterpillar Tractor Co. Contaminant trap for fluid operated rotary actuator
US5956901A (en) * 1997-06-24 1999-09-28 Northrop Grumman Corporation Gas driven hatch cover assembly
US6488273B2 (en) * 2001-04-20 2002-12-03 Btm Corporation Powered pivot unit
US20060032714A1 (en) * 2002-08-01 2006-02-16 Rhoads David C Actuator and slack adjuster
JP2007321961A (ja) * 2006-06-05 2007-12-13 Shiroki Corp ポンプ、ドアチェック装置及びダンパ
US20130042751A1 (en) * 2009-04-16 2013-02-21 Carl Romack Fluid-Actuated Controller Capable of Feedback Regulation
US20230086350A1 (en) * 2020-02-24 2023-03-23 Rotyx Oy Arrangement for tilting or turning a working instrument

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2421400C2 (de) * 1974-05-03 1986-09-18 Dynamit Nobel Ag, 5210 Troisdorf Rotationskraftelement

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2330151A (en) * 1942-08-17 1943-09-21 Bendix Aviat Corp Distributing valve
GB688917A (en) * 1950-04-03 1953-03-18 William Edward O Shei Improvements in or relating to differential fluid pressure motors of the oscillatingpaddle type
GB865223A (en) * 1958-10-28 1961-04-12 Girling Ltd Improvements in hydraulic devices of the vane type
US3051143A (en) * 1961-04-19 1962-08-28 Michael J Nee Actuator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2330151A (en) * 1942-08-17 1943-09-21 Bendix Aviat Corp Distributing valve
GB688917A (en) * 1950-04-03 1953-03-18 William Edward O Shei Improvements in or relating to differential fluid pressure motors of the oscillatingpaddle type
GB865223A (en) * 1958-10-28 1961-04-12 Girling Ltd Improvements in hydraulic devices of the vane type
US3051143A (en) * 1961-04-19 1962-08-28 Michael J Nee Actuator

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4192224A (en) * 1976-12-17 1980-03-11 Toyota Jidosha Kogyo Kabushiki Kaisha Rotary master cylinder means
WO1982000045A1 (en) * 1980-06-23 1982-01-07 J Bridwell Contaminant trap for fluid operated rotary actuator
US4345509A (en) * 1980-06-23 1982-08-24 Caterpillar Tractor Co. Contaminant trap for fluid operated rotary actuator
US5956901A (en) * 1997-06-24 1999-09-28 Northrop Grumman Corporation Gas driven hatch cover assembly
US6488273B2 (en) * 2001-04-20 2002-12-03 Btm Corporation Powered pivot unit
US20060032714A1 (en) * 2002-08-01 2006-02-16 Rhoads David C Actuator and slack adjuster
US7150344B2 (en) 2002-08-01 2006-12-19 Haldex Brake Corporation Actuator and slack adjuster
JP2007321961A (ja) * 2006-06-05 2007-12-13 Shiroki Corp ポンプ、ドアチェック装置及びダンパ
US20130042751A1 (en) * 2009-04-16 2013-02-21 Carl Romack Fluid-Actuated Controller Capable of Feedback Regulation
US20230086350A1 (en) * 2020-02-24 2023-03-23 Rotyx Oy Arrangement for tilting or turning a working instrument

Also Published As

Publication number Publication date
FR2109064A5 (sv) 1972-05-26
CH536933A (de) 1973-05-15
AT307820B (de) 1973-06-12
DE2138918A1 (sv) 1972-02-17
NL7111202A (sv) 1972-02-15
DE2138918B2 (de) 1979-02-22
GB1338508A (en) 1973-11-28
SE374948B (sv) 1975-03-24
DE2138918C3 (de) 1979-10-18

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AS Assignment

Owner name: CHASE MANHATTAN BANK (NATIONAL ASSOCIATION), THE

Free format text: SECURITY INTEREST;ASSIGNOR:RAIL ACQUISITION CORP.;REEL/FRAME:005323/0831

Effective date: 19900309

AS Assignment

Owner name: WESTINGHOUSE AIR BRAKE COMPANY, AIR BRAKE AVENUE,

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:AMERICAN STANDARD INC., A DE CORP.;REEL/FRAME:005648/0269

Effective date: 19900307