GB1411219A - Hydraulic stops for shock absorbers - Google Patents

Hydraulic stops for shock absorbers

Info

Publication number
GB1411219A
GB1411219A GB4466971A GB4466971A GB1411219A GB 1411219 A GB1411219 A GB 1411219A GB 4466971 A GB4466971 A GB 4466971A GB 4466971 A GB4466971 A GB 4466971A GB 1411219 A GB1411219 A GB 1411219A
Authority
GB
United Kingdom
Prior art keywords
piston
flow passage
stroke
spring
flow
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
GB4466971A
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.)
Jonas Woodhead Ltd
Original Assignee
Jonas Woodhead Ltd
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 Jonas Woodhead Ltd filed Critical Jonas Woodhead Ltd
Priority to GB4466971A priority Critical patent/GB1411219A/en
Publication of GB1411219A publication Critical patent/GB1411219A/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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/48—Arrangements for providing different damping effects at different parts of the stroke
    • F16F9/49—Stops limiting fluid passage, e.g. hydraulic stops or elastomeric elements inside the cylinder which contribute to changes in fluid damping
    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/34—Special valve constructions; Shape or construction of throttling passages
    • F16F9/348—Throttling passages in the form of annular discs or other plate-like elements which may or may not have a spring action, operating in opposite directions or singly, e.g. annular discs positioned on top of the valve or piston body

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

1411219 Shock absorbers with hydraulic end stops JONAS WOODHEAD Ltd 22 Dec 1972 [24 Sept 1971] 44669/71 Heading F2S The terminal portion of the stroke of a telescopic hydraulic shock absorber is damped. The shock absorber has first means 31 which, when the piston (not shown) approaches one of the ends 2 of the cylinder 1, closes off a first flow passage (36, 37 and the space containing a spring 32) which is open when the piston moves in that direction over the mid-portion of its stroke; and second means 20 for thereafter opening a second flow passage (36, 37, 17, 16) to afford flow in the same direction as through the first passage. The end of the contraction stroke is damped, the first and second flow passages leading from the cylinder below the piston to a conventional base valve (part shown 3, 4, 5) communicating with an annular reservoir (Fig. 1, not shown). As the piston approaches the base valve, it compresses a spring 34 which moves members 26, 28 and 31 down against the bias of a light spring 32 until the valve member 31 engages a seat 15 to close the first flow passage. Pressure below the piston then builds up until it lifts a valve element 20 to open the second flow passage to the base valve.
GB4466971A 1971-09-24 1971-09-24 Hydraulic stops for shock absorbers Expired GB1411219A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4466971A GB1411219A (en) 1971-09-24 1971-09-24 Hydraulic stops for shock absorbers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4466971A GB1411219A (en) 1971-09-24 1971-09-24 Hydraulic stops for shock absorbers

Publications (1)

Publication Number Publication Date
GB1411219A true GB1411219A (en) 1975-10-22

Family

ID=10434279

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4466971A Expired GB1411219A (en) 1971-09-24 1971-09-24 Hydraulic stops for shock absorbers

Country Status (1)

Country Link
GB (1) GB1411219A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2164116A (en) * 1984-06-27 1986-03-12 Israel Aircraft Ind Ltd Suspension system with hydraulic bump stop
GB2180621A (en) * 1985-09-19 1987-04-01 Fichtel & Sachs Ag Double-tube vibration damper
FR2914716A1 (en) * 2007-04-06 2008-10-10 Peugeot Citroen Automobiles Sa Hydraulic bump stop for adaptable compensation hydraulic shock absorber of motor vehicle, has compressible unit transforming deflection of stopping component such that stiffness and cutin point of compensation module increases

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2164116A (en) * 1984-06-27 1986-03-12 Israel Aircraft Ind Ltd Suspension system with hydraulic bump stop
GB2180621A (en) * 1985-09-19 1987-04-01 Fichtel & Sachs Ag Double-tube vibration damper
FR2591695A1 (en) * 1985-09-19 1987-06-19 Fichtel & Sachs Ag TWO-TUBE VIBRATION SHOCK ABSORBER
US4768629A (en) * 1985-09-19 1988-09-06 Fichtel & Sachs Ag Double-tube vibration damper
FR2914716A1 (en) * 2007-04-06 2008-10-10 Peugeot Citroen Automobiles Sa Hydraulic bump stop for adaptable compensation hydraulic shock absorber of motor vehicle, has compressible unit transforming deflection of stopping component such that stiffness and cutin point of compensation module increases

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees