GB1209306A - Improvements in or relating to linear hydraulic motors - Google Patents

Improvements in or relating to linear hydraulic motors

Info

Publication number
GB1209306A
GB1209306A GB56784/66A GB5678466A GB1209306A GB 1209306 A GB1209306 A GB 1209306A GB 56784/66 A GB56784/66 A GB 56784/66A GB 5678466 A GB5678466 A GB 5678466A GB 1209306 A GB1209306 A GB 1209306A
Authority
GB
United Kingdom
Prior art keywords
cylinders
valve
spool
ram
nozzle
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
Application number
GB56784/66A
Inventor
Donald Firth
Sinclair Upton Cunningham
Ronald Graham Mcintyre
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.)
National Research Development Corp UK
National Research Development Corp of India
Original Assignee
National Research Development Corp UK
National Research Development Corp of India
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 National Research Development Corp UK, National Research Development Corp of India filed Critical National Research Development Corp UK
Priority to GB56784/66A priority Critical patent/GB1209306A/en
Priority to US688869A priority patent/US3473440A/en
Priority to FR1548943D priority patent/FR1548943A/fr
Priority to DE1967N0031822 priority patent/DE1653582B2/en
Publication of GB1209306A publication Critical patent/GB1209306A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
    • F03C1/00—Reciprocating-piston liquid engines
    • F03C1/02—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Hydraulic Motors (AREA)
  • Multiple-Way Valves (AREA)

Abstract

1,209,306. Hydraulic reciprocating motors. NATIONAL RESEARCH DEVELOPMENT CORP. Dec.14, 1967 [Dec. 19, 1966], No.56784/66. Heading F1A. Linear movement of a ram 242 Fig. 9 relative to a fixed body 200 is effected by abutment of a plurality of longitudinally spaced continuously reciprocating pistons 224, 226 --- 238 against an undulating cam surface 240 extending along the ram when hydraulic fluid delivered by a pump 263 Fig.7 through a directional control valve 265 is selectively supplied to pairs of cylinders e. g. 204, 210, and 206, 208 through two-position spool valves only two of which 252, 254 are shown and which spool valves are controlled by a sensor device 256 comprising a fluid discharge nozzle 276 connected to the pump 264 through a reducing valve 258 and connected by a branch line 268 to one end of spool valve 252 and a similar nozzle 278 connected by a branch line 270 to one end of spool valve 254, the arrangement being that each nozzle is periodically blocked by spaced lands 274 on the ram surface and periodically relieved when in register with recesses 272 between said lands resulting in pressure pulses being sent through lines 268, 270 to move the associated spool valve to its other position. In the valve positions shown in Fig. 7 cylinders 204, 210 are pressurized whilst cylinders 206, 208 are connected to exhaust. Each of the cylinders 204, 206 --- 218 is one of a group of 16 radial cylinders. In a modification the cam surface remains fixed and the cylinder block is moved longitudinally and the spool valves are actuated by compressed air pulses generated when the nozzles are blocked.
GB56784/66A 1966-12-19 1966-12-19 Improvements in or relating to linear hydraulic motors Expired GB1209306A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB56784/66A GB1209306A (en) 1966-12-19 1966-12-19 Improvements in or relating to linear hydraulic motors
US688869A US3473440A (en) 1966-12-19 1967-12-07 Linear hydraulic motors
FR1548943D FR1548943A (en) 1966-12-19 1967-12-18
DE1967N0031822 DE1653582B2 (en) 1966-12-19 1967-12-19 CONTROL FOR A HYDROSTATIC LINEAR MOTOR

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB56784/66A GB1209306A (en) 1966-12-19 1966-12-19 Improvements in or relating to linear hydraulic motors

Publications (1)

Publication Number Publication Date
GB1209306A true GB1209306A (en) 1970-10-21

Family

ID=10477536

Family Applications (1)

Application Number Title Priority Date Filing Date
GB56784/66A Expired GB1209306A (en) 1966-12-19 1966-12-19 Improvements in or relating to linear hydraulic motors

Country Status (4)

Country Link
US (1) US3473440A (en)
DE (1) DE1653582B2 (en)
FR (1) FR1548943A (en)
GB (1) GB1209306A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4510845A (en) * 1981-06-18 1985-04-16 Bachofen Ag Pressure-medium-driven linear driving arrangement

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3657965A (en) * 1969-07-11 1972-04-25 Martonair Ltd Method and control circuit for effecting the sequential operation of machine elements
US3848515A (en) * 1972-12-29 1974-11-19 Ibm Linear hydraulic drive system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4510845A (en) * 1981-06-18 1985-04-16 Bachofen Ag Pressure-medium-driven linear driving arrangement

Also Published As

Publication number Publication date
DE1653582A1 (en) 1971-08-12
FR1548943A (en) 1968-12-06
DE1653582B2 (en) 1977-06-30
US3473440A (en) 1969-10-21

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee