GB907618A - Improvements in double-acting valves - Google Patents

Improvements in double-acting valves

Info

Publication number
GB907618A
GB907618A GB1984659A GB1984659A GB907618A GB 907618 A GB907618 A GB 907618A GB 1984659 A GB1984659 A GB 1984659A GB 1984659 A GB1984659 A GB 1984659A GB 907618 A GB907618 A GB 907618A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
annular
piston
sleeve
liquid
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
GB1984659A
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.)
Individual
Original Assignee
Individual
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
Priority claimed from FR795764A external-priority patent/FR75776E/en
Application filed by Individual filed Critical Individual
Publication of GB907618A publication Critical patent/GB907618A/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
    • F16F9/3207—Constructional features
    • F16F9/3214—Constructional features of pistons
    • 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
    • F16F9/3415—Special valve constructions; Shape or construction of throttling passages characterised by comprising plastics, elastomeric or porous elements
    • 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

Landscapes

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

Abstract

907,618. Valves. BECHEREAU, L. June 10, 1959 [June 14, 1958; Feb. 19, 1959; May 27, 1959], No. 19846/59. Class 135. [Also in Group XXXII] A double-acting valve for use in an hydraulic shock-absorber comprises annular oppositely facing valve seats in different planes against which opposite faces of a deformable annular diaphragm comprising a tubular resilient element, an internal cylindrical sleeve forming one piece therewith and a metal part at its outer periphery normally bear and wherein on the flow of liquid in either direction the diaphragm is axially deformed with its lateral cylindrical surfaces remaining parallel to one another. As shown in Fig. 1, a deformable diaphragm comprises an annular rubber member 20 of gradually increasing thickness from its outside to its inside bonded to metal rings 24, 25 and a sleeve 21. The diaphragm normally engages an annular seat 11 on a piston 1 and the inner margin of a ring 7. When liquid flow is in direction f2, the liquid passes through an annular gap between the sleeve and the piston hub. As shown in Fig. 2, the deformable diaphragm comprises a resilient member 41 bonded to internal and external sleeves 41a, 41b. The whole is secured by a circlip 43a to a member 42 having a radially and outwardly projecting flange 42 formed with a seat 43. The pressure of the liquid acting in either direction on the diaphragm is in part balanced by pressure acting on the flange. As shown in Fig. 3, a thick rubber diaphragm 41 is bonded to a sleeve 41a and a member 41b having an inwardly tapered extension 43. The piston 1 which is made in two parts 2a, 2b is formed with orifices 49 and orifices 47 controlled by an auxiliary diaphragm 45. During the pre-lifting period, elastic overpressure tending to build up in chamber 4 is prevented by flow through the orifices 49 and an annular throttling gap 31d to establish a differential pressure on the two sides of the piston 1. Extreme overpressure in the chamber 4 is relieved by the diaphragm 45.
GB1984659A 1958-06-14 1959-06-10 Improvements in double-acting valves Expired GB907618A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR767995A FR1244909A (en) 1958-06-14 1958-06-14 Double acting valve
FR787220A FR74978E (en) 1958-06-14 1959-02-19 Double acting valve
FR795764A FR75776E (en) 1959-05-27 1959-05-27 Double acting valve

Publications (1)

Publication Number Publication Date
GB907618A true GB907618A (en) 1962-10-10

Family

ID=27245173

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1984659A Expired GB907618A (en) 1958-06-14 1959-06-10 Improvements in double-acting valves

Country Status (2)

Country Link
FR (2) FR1244909A (en)
GB (1) GB907618A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20100456A1 (en) * 2010-05-31 2011-12-01 Antonino Cultraro LINEAR SHOCK ABSORBER
EP2989346A1 (en) * 2013-07-12 2016-03-02 BeijingWest Industries Co. Ltd. Hydraulic damper

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1249017B (en) * 1961-09-06 1900-01-01
US3646957A (en) * 1970-04-22 1972-03-07 Caterpillar Tractor Co High-pressure relief belleville valve
FR2327465A1 (en) * 1975-10-09 1977-05-06 Commissariat Energie Atomique VARIABLE THROTTLE VALVE, ESPECIALLY FOR A SUSPENSION DAMPER
DE2600820C3 (en) * 1976-01-12 1982-02-04 Volkswagenwerk Ag, 3180 Wolfsburg Disk spring valve for shock absorbers
DE2628893C2 (en) * 1976-06-26 1981-11-26 Volkswagenwerk Ag, 3180 Wolfsburg Valve arrangement for a vibration damper
JPS56120841A (en) * 1980-02-27 1981-09-22 Nissan Motor Co Ltd Shock absorber
DE4445926C1 (en) * 1994-12-22 1996-04-18 Fichtel & Sachs Ag Telescopic shock absorber

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20100456A1 (en) * 2010-05-31 2011-12-01 Antonino Cultraro LINEAR SHOCK ABSORBER
EP2989346A1 (en) * 2013-07-12 2016-03-02 BeijingWest Industries Co. Ltd. Hydraulic damper
EP2989346A4 (en) * 2013-07-12 2016-08-10 Beijingwest Ind Co Ltd Hydraulic damper

Also Published As

Publication number Publication date
FR74978E (en) 1961-03-03
FR1244909A (en) 1960-11-04

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