US3398644A - Fluid-operable reversible motor comprising a rotary piston - Google Patents

Fluid-operable reversible motor comprising a rotary piston Download PDF

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Publication number
US3398644A
US3398644A US556068A US55606866A US3398644A US 3398644 A US3398644 A US 3398644A US 556068 A US556068 A US 556068A US 55606866 A US55606866 A US 55606866A US 3398644 A US3398644 A US 3398644A
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United States
Prior art keywords
air
cylinder
fluid
bore
rotary piston
Prior art date
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Expired - Lifetime
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US556068A
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English (en)
Inventor
Wetzel Ludwig
Belzner Paul
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.)
Schmid and Wezel GmbH and Co
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Schmid and Wezel GmbH and Co
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 Schmid and Wezel GmbH and Co filed Critical Schmid and Wezel GmbH and Co
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Publication of US3398644A publication Critical patent/US3398644A/en
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Classifications

    • 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
    • F01C13/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
    • F01C13/02—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby for driving hand-held tools or the like
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H13/00—Gum massage
    • 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
    • F01C1/00—Rotary-piston machines or engines
    • F01C1/30—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F01C1/34—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members
    • F01C1/344—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • 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
    • F01C20/00—Control of, monitoring of, or safety arrangements for, machines or engines
    • F01C20/04—Control of, monitoring of, or safety arrangements for, machines or engines specially adapted for reversible machines or engines
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2544—Supply and exhaust type
    • Y10T137/2554—Reversing or 4-way valve systems
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2559—Self-controlled branched flow systems
    • Y10T137/2564—Plural inflows
    • Y10T137/2567—Alternate or successive inflows

Definitions

  • a fluid-operable reversible motor having a cylinder with a longitudinal axis, as a stator, with a bore eccentric to the cylinder axis in which is a rotor or a piston body concentric to said cylinder mounted for rotation in the bore, the piston body having radial slots in which operate vanes guided in the slots for movement radially outwardly in contacting the cylinder in the operation of the fluid motor with valve means for bleeding a portion of the pressure and duct means for directing this bled pressure to the piston body and radially outwardly towards the radial slots for movement of the vanes radially outwardly at a predetermined time before the main pressure drives the motor in either of two opposite senses.
  • This invention relates to a compressed air motor which comprises a reversible rotary piston having a rotor formed with vane guide slots.
  • Such motors are used as drive means tor tools, such as grinding wheels and drills.
  • the compressed-air motor according to the invention comprises a reversible rotary piston having a rotor formed with vane guide slots and is characterized in that the vanes are urged against the cylinder wall by compressed air, which is bled off before the inlet to the driving cylinder. As a result, the vanes are urged against the cylinder wall before the compressed air enters the cylinder. This arrangement ensures a satisfactory start.
  • the compressed air which is bled from the air supply system may be centrally supplied to the vanes through a longitudinal bore in the rotor and succeeding radial bores.
  • the longitudinal bore in the rotor is fed by a transverse bore formed in the end ring provided with a ball valve, which enables an admission of air on both sides.
  • the ball valve is connected to the air supply and discharge conduits, which are reversible, and tends to seat on the opening which is under lower pressure.
  • the cylinder is formed with an eccentric bore which accommodates the centrally disposed rotor and with two air inlet and air outlet pockets, which are symmetrical with respect to the longitudinal center plane.
  • Compressed air is supplied to the cylinder from a reversible spool valve, which is parallel to the ball valve.
  • the shunt-connected spool valve is preceded by two air inlets, which cause the valve spool to be reversed by an admission and interruption of the supply of air whereas the air outlet is disposed intermediate the inlets.
  • FIGS. 1 and 2 are longitudinal sectional'views taken taken on lines'I and II, respectively, in-FIGS. 3 and lshowing a compressed-air motor in' condition for two different directions of movement.
  • FIG. 3 is a transverse sectional" view taken on line III-III in FIG. 1 and a e FIG. 4 shows-the detail A of FIG. 3 on 'a l'arger scale.
  • the rotor 4 is rotatably mounted at both ends in ball bearings held in bearing blocks 6, 7. Air inlets and outlets 8, 9, 10 are provided at one end and a transmission 11 provided with a transmission sleeve 12 and a tool chuck 13 is provided at the other end.
  • compressed air Before compressed air enters through in air supply conduit 15 and an inlet pocket 16 into the cylinder bore 3, compressed air is bled through a ball valve v17 and flows through a longitudinal bore 18 and radial bores 19 and is centrally admitted to vanes 5, which are thus moved outwardly so that a rapid start is ensured.
  • the compressed air has performed work in the cylinder bore 3, the air flows through the outlet pocket 20 and the air discharge conduit 21 and past the valve spool 14 to the exhaust outlet 10.
  • FIG. 2 shows the air supply in a reversed state.
  • the valve spool 14 and the ball valve 17 have been automatically reversed because air is admitted through 9. This air flows in the opposite direction through 21, 20 to 16, 15 and past the valve spool 14 to the same exhaust outlet 10.
  • the ball valve 17 is always seated on the opening which is under a lower pressure.
  • a simple change of the supply of air from 8 to 9 enables thus a reversal of the direction of rotation.
  • the vanes are moved against the wall of the cylinder bore 3 by compressed air which is bled off before its admission to the cylinder bore.
  • the valve spool 14 is parallel to the ball valve 17.
  • a fluid-operable motor comprising a cylinder having a longitudinal axis and formed with a bore eccentric to said axis, a piston body concentric to said cylinder mounted for rotation in said bore and formed with radially outwardly open radial slots, which are closed at both ends of their axial extent, a plurality of vanes radially guided in said slots and adapted to project radially from said piston body into engagement with said cylinder, a main pressure fluid system for selectively supplying main pressure fluid to said bore in either of two opposite senses to cause said piston to rotate in either of two opposite senses, bleeding means arranged to withdraw pressure fluid from said system at a predetermined time and at a point disposed before said bore and to supply the pressure fluid thus withdrawn to portions of said slots disposed radially inwardly of said vanes so that said vanes are urged into engagement with said cylinder before rotation of said piston by the main pressure fluid in either of the two opposite senses, said system comprising two conduits having inner ends at peripherally spaced points of the inside surface of said
  • v alve connects one of its pressure fluid inlets to one of said conduits and the otherot saidconduits to saidexhaust port, whereas inthe other position said spool valvecohnects the other of its pressure fluid inlets to said 662' wi h said ptcs ureiflnid 1-9 11t e. ,.2 and;

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Pain & Pain Management (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Rehabilitation Therapy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Hydraulic Motors (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Actuator (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Control Of Turbines (AREA)
US556068A 1965-12-27 1966-06-08 Fluid-operable reversible motor comprising a rotary piston Expired - Lifetime US3398644A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DESCH38255A DE1277635B (de) 1965-12-27 1965-12-27 Druckluftdrehkolbenmotor mit umsteuerbarer Drehrichtung

Publications (1)

Publication Number Publication Date
US3398644A true US3398644A (en) 1968-08-27

Family

ID=7434632

Family Applications (1)

Application Number Title Priority Date Filing Date
US556068A Expired - Lifetime US3398644A (en) 1965-12-27 1966-06-08 Fluid-operable reversible motor comprising a rotary piston

Country Status (5)

Country Link
US (1) US3398644A (instruction)
DE (1) DE1277635B (instruction)
ES (1) ES329159A1 (instruction)
GB (1) GB1154223A (instruction)
SE (1) SE313950B (instruction)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3465646A (en) * 1967-10-05 1969-09-09 Aro Corp Pneumatic motor structure
US3566903A (en) * 1969-04-24 1971-03-02 Omark Prentice Hydraulics Inc Dump valve
US3773117A (en) * 1971-03-31 1973-11-20 Wilson T Inc Reversible drive tool
US3966369A (en) * 1975-03-06 1976-06-29 Empire Oil Tool Company Inlet and outlet ports and sealing means for a fluid driven motor
US4898526A (en) * 1986-08-12 1990-02-06 Eagle Industry Co., Ltd. Vane pump with axial inlet and peripheral tangential outlet
CN103807093A (zh) * 2014-03-03 2014-05-21 孟庆奎 一种阀片式液压马达

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2141171A (en) * 1936-06-25 1938-12-27 Manly Corp Rotary pump or motor
US2441201A (en) * 1943-09-06 1948-05-11 Jr Walter D Ludwig Valve
US2627388A (en) * 1949-07-01 1953-02-03 Weatherhead Co Transfer check valve
US2696787A (en) * 1948-06-28 1954-12-14 Shockey Corp Rotary pump
US2927669A (en) * 1957-07-09 1960-03-08 Hans Putzer Compressed-air motor for a hoisting gear
US3011449A (en) * 1960-04-15 1961-12-05 Thompson Grinder Co Vaned hydraulic unit
US3039491A (en) * 1959-07-15 1962-06-19 Ranco Inc Valve mechanism for fluid systems
US3134334A (en) * 1959-02-10 1964-05-26 Fluid Power Products Inc Reversible discharge flow variable displacement pump
US3238848A (en) * 1963-04-08 1966-03-08 Standard Pneumatic Motor Compa Pneumatic motor

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE295004C (instruction) *
GB409363A (en) * 1932-10-31 1934-04-30 Horace Skeet Broom Improvements in or relating to rotary compressed air motors
GB673051A (en) * 1950-10-25 1952-05-28 George Henry Thomas Williams Improvements in or relating to rotary elastic-fluid operated motors
GB692690A (en) * 1952-03-04 1953-06-10 George Henry Thomas Williams Improvements in or relating to rotary elastic fluid operated motors
US2980078A (en) * 1957-04-01 1961-04-18 Master Power Corp Reversing pneumatic motor
DE1875307U (de) * 1963-04-27 1963-07-11 Deprag Pressluftmaschinen Schu Unsteuerbare druckluftmaschine, insbesondere schlag- oder drebechrauber mit kombinierter lufteinlass- und umsteuereinrichtung.

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2141171A (en) * 1936-06-25 1938-12-27 Manly Corp Rotary pump or motor
US2441201A (en) * 1943-09-06 1948-05-11 Jr Walter D Ludwig Valve
US2696787A (en) * 1948-06-28 1954-12-14 Shockey Corp Rotary pump
US2627388A (en) * 1949-07-01 1953-02-03 Weatherhead Co Transfer check valve
US2927669A (en) * 1957-07-09 1960-03-08 Hans Putzer Compressed-air motor for a hoisting gear
US3134334A (en) * 1959-02-10 1964-05-26 Fluid Power Products Inc Reversible discharge flow variable displacement pump
US3039491A (en) * 1959-07-15 1962-06-19 Ranco Inc Valve mechanism for fluid systems
US3011449A (en) * 1960-04-15 1961-12-05 Thompson Grinder Co Vaned hydraulic unit
US3238848A (en) * 1963-04-08 1966-03-08 Standard Pneumatic Motor Compa Pneumatic motor

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3465646A (en) * 1967-10-05 1969-09-09 Aro Corp Pneumatic motor structure
US3566903A (en) * 1969-04-24 1971-03-02 Omark Prentice Hydraulics Inc Dump valve
US3773117A (en) * 1971-03-31 1973-11-20 Wilson T Inc Reversible drive tool
US3966369A (en) * 1975-03-06 1976-06-29 Empire Oil Tool Company Inlet and outlet ports and sealing means for a fluid driven motor
US4898526A (en) * 1986-08-12 1990-02-06 Eagle Industry Co., Ltd. Vane pump with axial inlet and peripheral tangential outlet
CN103807093A (zh) * 2014-03-03 2014-05-21 孟庆奎 一种阀片式液压马达
CN103807093B (zh) * 2014-03-03 2016-11-23 曲阜圣地沃尔电子科技有限公司 一种阀片式液压马达

Also Published As

Publication number Publication date
DE1277635B (de) 1968-09-12
ES329159A1 (es) 1967-05-01
GB1154223A (en) 1969-06-04
SE313950B (instruction) 1969-08-25

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