GB746696A - Improvements in or relating to fluid pressure apparatus - Google Patents

Improvements in or relating to fluid pressure apparatus

Info

Publication number
GB746696A
GB746696A GB420354A GB420354A GB746696A GB 746696 A GB746696 A GB 746696A GB 420354 A GB420354 A GB 420354A GB 420354 A GB420354 A GB 420354A GB 746696 A GB746696 A GB 746696A
Authority
GB
United Kingdom
Prior art keywords
passage
piston
cylinder
adjusted
close
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
GB420354A
Inventor
Oliver Wendell Wood
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 Pneumatic Co Inc
Original Assignee
National Pneumatic Co Inc
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 Pneumatic Co Inc filed Critical National Pneumatic Co Inc
Priority to GB420354A priority Critical patent/GB746696A/en
Publication of GB746696A publication Critical patent/GB746696A/en
Expired legal-status Critical Current

Links

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
    • F15B15/20—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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Actuator (AREA)

Abstract

746,696. Dashpots. NATIONAL PNEUMATIC CO., Inc. Feb. 12, 1954, No. 4203/54. Class 108 (3). The invention relates to fluid pressure apparatus comprising a piston 38 reciprocable in a cylinder 11 connected by fluid flow means with a fluid supply. According to the invention, the fluid flow means comprises a normally-open comparatively unrestricted passage 64, a comparatively restricted passage 62<SP>1</SP>, and cushioning means 40 carried by the piston, and effective when the piston nears the end of its stroke, to close the passage 64 and render operative the passage 62<SP>1</SP>. The passage 62<SP>1</SP> can be adjusted by a valve 62. The cushioning means 40 comprises a sleeve 40, slidable on the piston rod 12 against a spring 37, and engageable with a seat 66 to close the passage 64 near the end of rightwards piston travel. The piston 38 has fibrous lubricating rings 31, lubricant-retaining channels 32, and packing rings 51 and 52. Each cylinder head is sealed by a non-metallic ring 14, and a toroidal spring 16. Clamping nuts 17 can be slackened off to enable the rotational position of the cylinder to be adjusted. The brackets 23 at each end of the cylinder are reversible to enable various combinations of positions of their securing holes to be attained.
GB420354A 1954-02-12 1954-02-12 Improvements in or relating to fluid pressure apparatus Expired GB746696A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB420354A GB746696A (en) 1954-02-12 1954-02-12 Improvements in or relating to fluid pressure apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB420354A GB746696A (en) 1954-02-12 1954-02-12 Improvements in or relating to fluid pressure apparatus

Publications (1)

Publication Number Publication Date
GB746696A true GB746696A (en) 1956-03-21

Family

ID=9772670

Family Applications (1)

Application Number Title Priority Date Filing Date
GB420354A Expired GB746696A (en) 1954-02-12 1954-02-12 Improvements in or relating to fluid pressure apparatus

Country Status (1)

Country Link
GB (1) GB746696A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3034482A (en) * 1960-02-29 1962-05-15 Harold K Rader Adjustable piston cushion
US3067726A (en) * 1961-02-27 1962-12-11 Int Basic Economy Corp Cushioning structure for fluid power cylinders
US4139182A (en) * 1975-11-26 1979-02-13 Tokico Ltd. Spring device
CN103062392A (en) * 2013-01-16 2013-04-24 浙江万里扬变速器股份有限公司 Transmission three-gear air cylinder capable of automatically resetting to neutral gear

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3034482A (en) * 1960-02-29 1962-05-15 Harold K Rader Adjustable piston cushion
US3067726A (en) * 1961-02-27 1962-12-11 Int Basic Economy Corp Cushioning structure for fluid power cylinders
US4139182A (en) * 1975-11-26 1979-02-13 Tokico Ltd. Spring device
CN103062392A (en) * 2013-01-16 2013-04-24 浙江万里扬变速器股份有限公司 Transmission three-gear air cylinder capable of automatically resetting to neutral gear
CN103062392B (en) * 2013-01-16 2015-11-18 浙江万里扬变速器股份有限公司 Speed changer three cylinders of a kind of gear that can automatically make the return trip empty

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