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FR2418390A1 - Telescopic hydraulic shock absorber for car - has nut rotated to move needle w.r.t. seat and vary piston orifice to adjust stiffness - Google Patents

Telescopic hydraulic shock absorber for car - has nut rotated to move needle w.r.t. seat and vary piston orifice to adjust stiffness

Info

Publication number
FR2418390A1
FR2418390A1 FR7805286A FR7805286A FR2418390A1 FR 2418390 A1 FR2418390 A1 FR 2418390A1 FR 7805286 A FR7805286 A FR 7805286A FR 7805286 A FR7805286 A FR 7805286A FR 2418390 A1 FR2418390 A1 FR 2418390A1
Authority
FR
France
Prior art keywords
seat
shock absorber
hydraulic shock
telescopic hydraulic
car
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.)
Granted
Application number
FR7805286A
Other languages
French (fr)
Other versions
FR2418390B1 (en
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
Application filed by Individual filed Critical Individual
Priority to FR7805286A priority Critical patent/FR2418390A1/en
Publication of FR2418390A1 publication Critical patent/FR2418390A1/en
Application granted granted Critical
Publication of FR2418390B1 publication Critical patent/FR2418390B1/fr
Granted 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
    • F16F9/44—Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction

Landscapes

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

Abstract

The telescopic hydraulic shock absorber adjusts for stiffness to suit vehicle loadings. It comprises a cylinder (1) with a piston (6) defining two intercommunicating chambers (13, 14). Communication is provided by a valve group (15) and a permanent aperture, the former accommodating adjustment under relative piston and cylinder motion, and the latter being defined by an axially displaceable needle (21) and a seat (22). An axial bore (18) of the piston rod (7) locates a sliding rod (20) of which the needle forms an axial extension, and which is displaced axially by rotating an external nut (23). The seat is a tight sliding fit in the bore, and is located initially by full rod penetration.
FR7805286A 1978-02-24 1978-02-24 Telescopic hydraulic shock absorber for car - has nut rotated to move needle w.r.t. seat and vary piston orifice to adjust stiffness Granted FR2418390A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7805286A FR2418390A1 (en) 1978-02-24 1978-02-24 Telescopic hydraulic shock absorber for car - has nut rotated to move needle w.r.t. seat and vary piston orifice to adjust stiffness

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7805286A FR2418390A1 (en) 1978-02-24 1978-02-24 Telescopic hydraulic shock absorber for car - has nut rotated to move needle w.r.t. seat and vary piston orifice to adjust stiffness

Publications (2)

Publication Number Publication Date
FR2418390A1 true FR2418390A1 (en) 1979-09-21
FR2418390B1 FR2418390B1 (en) 1982-04-23

Family

ID=9204988

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7805286A Granted FR2418390A1 (en) 1978-02-24 1978-02-24 Telescopic hydraulic shock absorber for car - has nut rotated to move needle w.r.t. seat and vary piston orifice to adjust stiffness

Country Status (1)

Country Link
FR (1) FR2418390A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0046702A1 (en) * 1980-08-26 1982-03-03 ETAT-FRANCAIS représenté par le Délégué Général pour l' Armement Device for launching and guiding a missile
FR2594510A1 (en) * 1986-02-18 1987-08-21 Bourcier Carbon Christian HYDRAULIC SHOCK ABSORBER WITH CONTROL
EP0271050A2 (en) * 1986-12-12 1988-06-15 Liquid Spring Investors, Ltd. Fluid suspension spring and damper for vehicle suspension system
FR2625277A1 (en) * 1987-12-28 1989-06-30 Tokico Ltd HYDRAULIC SHOCK ABSORBER
EP0715091A3 (en) * 1994-12-03 1998-04-08 FICHTEL & SACHS AG Adjustable vibration damper
EP1178238A2 (en) * 2000-07-31 2002-02-06 Wohlfarth, Klaus Twin-tube type shock absorber

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1041527A (en) * 1950-10-31 1953-10-23 Hydraulic piston shock absorber with elastic valves for adjusting the degree of damping of the two effects, especially suitable for mounting on all vehicles
FR1067472A (en) * 1952-06-17 1954-06-16 Fichtel & Sachs Ag Telescopic shock absorber adjustable while driving for vehicles of all kinds
FR1095276A (en) * 1954-03-13 1955-05-31 Telescopic shock absorber with external adjustment
FR1300013A (en) * 1960-09-21 1962-07-27 Daimler Benz Ag Liquid shock absorber for vehicles, in particular for motor vehicles
FR1531475A (en) * 1967-05-03 1968-07-05 Vehicle suspension with control of the force of application of the wheels on the ground
CH465335A (en) * 1966-01-21 1968-11-15 Pardo Herrera Jose Adjustable hydraulic damping device
DE1455932A1 (en) * 1965-12-23 1970-07-02 Rheinmetall Gmbh Hydraulic vibration damper
GB1311721A (en) * 1969-02-28 1973-03-28 Pardo Herrera J Hydraulic balancing mechanism
US3848710A (en) * 1971-09-13 1974-11-19 Bobrick Corp Shock absorber, piston and valve structure
GB1415608A (en) * 1973-12-21 1975-11-26 Armstrong Patents Co Ltd Improvements in and relating to telescopic hydraulic shock absorbers
US4030335A (en) * 1975-03-13 1977-06-21 Walter Allenspach Multi-function metal-working machine

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1041527A (en) * 1950-10-31 1953-10-23 Hydraulic piston shock absorber with elastic valves for adjusting the degree of damping of the two effects, especially suitable for mounting on all vehicles
FR1067472A (en) * 1952-06-17 1954-06-16 Fichtel & Sachs Ag Telescopic shock absorber adjustable while driving for vehicles of all kinds
FR1095276A (en) * 1954-03-13 1955-05-31 Telescopic shock absorber with external adjustment
FR1300013A (en) * 1960-09-21 1962-07-27 Daimler Benz Ag Liquid shock absorber for vehicles, in particular for motor vehicles
DE1455932A1 (en) * 1965-12-23 1970-07-02 Rheinmetall Gmbh Hydraulic vibration damper
CH465335A (en) * 1966-01-21 1968-11-15 Pardo Herrera Jose Adjustable hydraulic damping device
FR1531475A (en) * 1967-05-03 1968-07-05 Vehicle suspension with control of the force of application of the wheels on the ground
GB1311721A (en) * 1969-02-28 1973-03-28 Pardo Herrera J Hydraulic balancing mechanism
US3848710A (en) * 1971-09-13 1974-11-19 Bobrick Corp Shock absorber, piston and valve structure
GB1415608A (en) * 1973-12-21 1975-11-26 Armstrong Patents Co Ltd Improvements in and relating to telescopic hydraulic shock absorbers
US4030335A (en) * 1975-03-13 1977-06-21 Walter Allenspach Multi-function metal-working machine

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0046702A1 (en) * 1980-08-26 1982-03-03 ETAT-FRANCAIS représenté par le Délégué Général pour l' Armement Device for launching and guiding a missile
FR2489499A1 (en) * 1980-08-26 1982-03-05 France Etat LAUNCHING AND GUIDING DEVICE FOR PROJECTILES
FR2594510A1 (en) * 1986-02-18 1987-08-21 Bourcier Carbon Christian HYDRAULIC SHOCK ABSORBER WITH CONTROL
EP0236204A1 (en) * 1986-02-18 1987-09-09 Bourcier de Carbon, Christian Hydraulic shock absorber with controllable damping
US4799577A (en) * 1986-02-18 1989-01-24 Carbon Christian B De Telescopic hydraulic shock absorber with temperature sensitive wire to control damping
EP0271050A2 (en) * 1986-12-12 1988-06-15 Liquid Spring Investors, Ltd. Fluid suspension spring and damper for vehicle suspension system
EP0271050A3 (en) * 1986-12-12 1989-05-31 Liquid Spring Investors, Ltd. Fluid suspension spring and damper for vehicle suspension system
FR2625277A1 (en) * 1987-12-28 1989-06-30 Tokico Ltd HYDRAULIC SHOCK ABSORBER
EP0715091A3 (en) * 1994-12-03 1998-04-08 FICHTEL & SACHS AG Adjustable vibration damper
US5788030A (en) * 1994-12-03 1998-08-04 Fichtel & Sachs Ag Vibration damper with adjustable damping force
EP1178238A2 (en) * 2000-07-31 2002-02-06 Wohlfarth, Klaus Twin-tube type shock absorber
EP1178238A3 (en) * 2000-07-31 2003-06-18 Wohlfarth, Klaus Twin-tube type shock absorber

Also Published As

Publication number Publication date
FR2418390B1 (en) 1982-04-23

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Legal Events

Date Code Title Description
ST Notification of lapse
AR Application made for restoration
DI Inadmissibility of an action of restoration