GB1480956A - Hydraulic shock absorbers - Google Patents

Hydraulic shock absorbers

Info

Publication number
GB1480956A
GB1480956A GB3403374A GB3403374A GB1480956A GB 1480956 A GB1480956 A GB 1480956A GB 3403374 A GB3403374 A GB 3403374A GB 3403374 A GB3403374 A GB 3403374A GB 1480956 A GB1480956 A GB 1480956A
Authority
GB
United Kingdom
Prior art keywords
valve disc
piston
passage
valve
intermediate member
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
GB3403374A
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.)
WOODHEAD Ltd J
Original Assignee
WOODHEAD Ltd J
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 WOODHEAD Ltd J filed Critical WOODHEAD Ltd J
Priority to GB3403374A priority Critical patent/GB1480956A/en
Priority to FR7523915A priority patent/FR2280835A1/en
Priority to BE158847A priority patent/BE832004A/en
Priority to DE19752534489 priority patent/DE2534489A1/en
Publication of GB1480956A publication Critical patent/GB1480956A/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
    • F16F9/34—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
    • F16F9/3485—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 characterised by features of supporting elements intended to guide or limit the movement of the annular discs

Abstract

1480956 Shock absorber piston valves; valves JONAS WOODHEAD Ltd 1 Aug 1974 34033/74 Headings F2S and F2V A shock absorber comprises a working cylinder 1, a piston 7 which is slidable in the working cylinder and is provided with a passage 26 extending from one side to the other of the piston, and a valve 12 arranged to control fluid flow through the passage, the valve comprising a generally annular valve disc 20 which is resiliently biased against one side of the piston to close the passage 26 and is bodily movable away from the piston to open the passage, the resilient biasing of the valve disc 20 being provided by a spring 22 which acts through an intermediate member 21, with the engagement between the spring and the intermediate member being radially inward of the engagement between the intermediate member and the valve disc, and the arrangement being such that, when the valve disc 20 has moved bodily away from the piston, there are two distinct flow paths from the passage to a point in the cylinder on the side of the valve disc remote from the piston, one path passing around the outer periphery of the valve disc and the other through the central opening 23, Fig. 2. There are three passages 26 connected by an annular groove 25. The valve disc 20 has three lobes 24, Fig. 2, which centre it. The inner diameter of the annular portion of the valve disc is chosen so as not to block the flow on rebound to passages 18 and a valve 13. The spring 22 biasing the valve disc 20 is seated between a rebound stop 29 and the slidable dished intermediate member 21 which has apertures 28 to allow passage of fluid which has flowed through the central opening 23 of the valve disc 20. The shock absorber may be of double- or multi-tube type.
GB3403374A 1974-08-01 1974-08-01 Hydraulic shock absorbers Expired GB1480956A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB3403374A GB1480956A (en) 1974-08-01 1974-08-01 Hydraulic shock absorbers
FR7523915A FR2280835A1 (en) 1974-08-01 1975-07-31 IMPROVEMENTS TO VALVES FOR HYDRAULIC SHOCK ABSORBERS
BE158847A BE832004A (en) 1974-08-01 1975-07-31 IMPROVEMENTS TO VALVES FOR HYDRAULIC SHOCK ABSORBERS
DE19752534489 DE2534489A1 (en) 1974-08-01 1975-08-01 SHOCK ABSORBER

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3403374A GB1480956A (en) 1974-08-01 1974-08-01 Hydraulic shock absorbers

Publications (1)

Publication Number Publication Date
GB1480956A true GB1480956A (en) 1977-07-27

Family

ID=10360535

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3403374A Expired GB1480956A (en) 1974-08-01 1974-08-01 Hydraulic shock absorbers

Country Status (4)

Country Link
BE (1) BE832004A (en)
DE (1) DE2534489A1 (en)
FR (1) FR2280835A1 (en)
GB (1) GB1480956A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1107174B (en) * 1978-03-21 1985-11-25 Iao Industrie Riunite Spa IMPROVEMENTS IN TELESCOPIC TYPE HYDRAULIC SHOCK ABSORBERS

Also Published As

Publication number Publication date
FR2280835A1 (en) 1976-02-27
FR2280835B3 (en) 1978-03-17
BE832004A (en) 1976-02-02
DE2534489A1 (en) 1976-02-19

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee