GB774289A - Improvements in or relating to double-acting engine piston and cylinder assemblies - Google Patents

Improvements in or relating to double-acting engine piston and cylinder assemblies

Info

Publication number
GB774289A
GB774289A GB191854A GB191854A GB774289A GB 774289 A GB774289 A GB 774289A GB 191854 A GB191854 A GB 191854A GB 191854 A GB191854 A GB 191854A GB 774289 A GB774289 A GB 774289A
Authority
GB
United Kingdom
Prior art keywords
piston
rods
fluid
double
acting
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
GB191854A
Inventor
James Stephens
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.)
US METALLIC PACKING Co LT
Original Assignee
US METALLIC PACKING Co LT
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 US METALLIC PACKING Co LT filed Critical US METALLIC PACKING Co LT
Priority to GB191854A priority Critical patent/GB774289A/en
Publication of GB774289A publication Critical patent/GB774289A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J10/00—Engine or like cylinders; Features of hollow, e.g. cylindrical, bodies in general
    • F16J10/02—Cylinders designed to receive moving pistons or plungers
    • 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
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
    • F15B15/223—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke having a piston with a piston extension or piston recess which completely seals the main fluid outlet as the piston approaches its end position

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

774,289. Fluid-pressure engines. UNITED STATES METALLIC PACKING CO., Ltd. Jan. 20, 1955 [Jan. 22, 1954], No. 1918/54. Class 122 (3). [Also in Group XXIX] In a double-acting fluid-pressure engine the piston 1 is cushioned at each end of its stroke by means of closure elements 12, 13 carried on opposite sides of the piston and connected together by circumferentially spaced rods 14 axially slidable in bores 15 in the piston, the closure element 12, or 13, on the pressure side of the piston acting, due to the area of the rods 14, as a differential piston to urge the other element 13, or 12, ahead of the piston so that it closes a main port 7, or 6, before the piston reaches the end of its stroke and causes the remaining fluid to be exhausted through a smaller auxiliary port 10. Fluid is supplied to exhaust from opposite sides of the piston through passages 8 and 9 in the cylinder ends connected to the main and auxiliary ports. The rate of cushioning may be controlled by adjustable needle valves 11. The rods 14 are packed by seals 17. In a modification, the seals 17 are omitted and the rods packed by resilient 0-rings provided around the rods adjacent the elements 12, 13 and entering a recess in the ends of the bores 15.
GB191854A 1954-01-22 1954-01-22 Improvements in or relating to double-acting engine piston and cylinder assemblies Expired GB774289A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB191854A GB774289A (en) 1954-01-22 1954-01-22 Improvements in or relating to double-acting engine piston and cylinder assemblies

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191854A GB774289A (en) 1954-01-22 1954-01-22 Improvements in or relating to double-acting engine piston and cylinder assemblies

Publications (1)

Publication Number Publication Date
GB774289A true GB774289A (en) 1957-05-08

Family

ID=9730307

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191854A Expired GB774289A (en) 1954-01-22 1954-01-22 Improvements in or relating to double-acting engine piston and cylinder assemblies

Country Status (1)

Country Link
GB (1) GB774289A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1230481B (en) * 1961-06-23 1966-12-15 Bbc Brown Boveri & Cie Compressed air drive for electrical switches
EP0708254A2 (en) * 1994-10-18 1996-04-24 IMI Norgren GmbH Fluid-powered cylinder

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1230481B (en) * 1961-06-23 1966-12-15 Bbc Brown Boveri & Cie Compressed air drive for electrical switches
EP0708254A2 (en) * 1994-10-18 1996-04-24 IMI Norgren GmbH Fluid-powered cylinder
EP0708254A3 (en) * 1994-10-18 1998-03-25 IMI Norgren GmbH Fluid-powered cylinder
CN1071856C (en) * 1994-10-18 2001-09-26 德国Imi·诺格伦有限公司 Fluid-powered cylinder

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