GB2013826A - Sealing hydropneumatic shock absorbers - Google Patents

Sealing hydropneumatic shock absorbers

Info

Publication number
GB2013826A
GB2013826A GB7902479A GB7902479A GB2013826A GB 2013826 A GB2013826 A GB 2013826A GB 7902479 A GB7902479 A GB 7902479A GB 7902479 A GB7902479 A GB 7902479A GB 2013826 A GB2013826 A GB 2013826A
Authority
GB
United Kingdom
Prior art keywords
reservoir
tube
pressure
seal
hydraulic fluid
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.)
Withdrawn
Application number
GB7902479A
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.)
Armstrong Patents Co Ltd
Original Assignee
Armstrong Patents Co 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 Armstrong Patents Co Ltd filed Critical Armstrong Patents Co Ltd
Priority to GB7902479A priority Critical patent/GB2013826A/en
Publication of GB2013826A publication Critical patent/GB2013826A/en
Withdrawn legal-status Critical Current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
    • F16F9/36—Special sealings, including sealings or guides for piston-rods
    • F16F9/362—Combination of sealing and guide arrangements for piston rods
    • F16F9/364—Combination of sealing and guide arrangements for piston rods of multi-tube dampers
    • 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
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/164—Sealings between relatively-moving surfaces the sealing action depending on movements; pressure difference, temperature or presence of leaking fluid

Abstract

In a twin tube telescopic hydraulic shock absorber wherein the annular space 14 between the inner pressure tube 10 and the concentric outer tube 12 constitutes a reservoir for hydraulic fluid and the reservoir 14 additionally is required to contain a charge of pressure gas, a seal housing 32 is seam welded to the reservoir tube 12 and extends axially beyond the ends of the tubes 10 and 12 to define a hydraulic fluid cavity 42 within which is arranged a piston rod seal 38 spring biased against a radial flange 36 of the housing 32. At its inner axial end, the seal 38 has a lip 52 which yields on the application of external gas pressure to admit pressure gas to the shock absorber interior whilst an annular shroud 46 fitting closely around the pressure tube 10 depends from the seal housing 32 to define a narrow annular passage 44 by which the fluid cavity 42 is connected to the reservoir space 14 and maintained filled with hydraulic fluid. <IMAGE>
GB7902479A 1978-02-02 1979-01-24 Sealing hydropneumatic shock absorbers Withdrawn GB2013826A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7902479A GB2013826A (en) 1978-02-02 1979-01-24 Sealing hydropneumatic shock absorbers

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB417378 1978-02-02
GB7902479A GB2013826A (en) 1978-02-02 1979-01-24 Sealing hydropneumatic shock absorbers

Publications (1)

Publication Number Publication Date
GB2013826A true GB2013826A (en) 1979-08-15

Family

ID=26238937

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7902479A Withdrawn GB2013826A (en) 1978-02-02 1979-01-24 Sealing hydropneumatic shock absorbers

Country Status (1)

Country Link
GB (1) GB2013826A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2142118A (en) * 1983-06-22 1985-01-09 Fichtel & Sachs Ag Foam prevention in a double-tube vibration damper
FR2607568A1 (en) * 1986-11-28 1988-06-03 Renault Device for guiding the piston rod of a shock absorber
FR2696517A1 (en) * 1992-10-07 1994-04-08 Bosch Gmbh Robert Damper for a motor vehicle, in particular a two-tube damper.
GB2478546A (en) * 2010-03-09 2011-09-14 Gm Global Tech Operations Inc A seal for a piston rod
DE102014217836A1 (en) * 2014-09-05 2016-03-10 Bayerische Motoren Werke Aktiengesellschaft Shock absorber for a vehicle
WO2022207033A1 (en) * 2021-03-30 2022-10-06 Hydrostat Engineering + Konstruktion GmbH Rail vehicle fluid damper having a sensor, and method for monitoring said fluid damper

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2142118A (en) * 1983-06-22 1985-01-09 Fichtel & Sachs Ag Foam prevention in a double-tube vibration damper
US4609082A (en) * 1983-06-22 1986-09-02 Fichtel & Sachs Ag Double-tube vibration damper unit
FR2607568A1 (en) * 1986-11-28 1988-06-03 Renault Device for guiding the piston rod of a shock absorber
FR2696517A1 (en) * 1992-10-07 1994-04-08 Bosch Gmbh Robert Damper for a motor vehicle, in particular a two-tube damper.
GB2478546A (en) * 2010-03-09 2011-09-14 Gm Global Tech Operations Inc A seal for a piston rod
DE102014217836A1 (en) * 2014-09-05 2016-03-10 Bayerische Motoren Werke Aktiengesellschaft Shock absorber for a vehicle
WO2022207033A1 (en) * 2021-03-30 2022-10-06 Hydrostat Engineering + Konstruktion GmbH Rail vehicle fluid damper having a sensor, and method for monitoring said fluid damper

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)
PCNP Patent ceased through non-payment of renewal fee