WO2001014764A3 - Improved gas spring - Google Patents

Improved gas spring Download PDF

Info

Publication number
WO2001014764A3
WO2001014764A3 PCT/US2000/022556 US0022556W WO0114764A3 WO 2001014764 A3 WO2001014764 A3 WO 2001014764A3 US 0022556 W US0022556 W US 0022556W WO 0114764 A3 WO0114764 A3 WO 0114764A3
Authority
WO
WIPO (PCT)
Prior art keywords
stop
shaft
piston assembly
gas spring
movement
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.)
Ceased
Application number
PCT/US2000/022556
Other languages
French (fr)
Other versions
WO2001014764A2 (en
Inventor
James T Bertram
Feroz Ahmed
Kenneth L Hasty
Jack R Roach
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.)
AVM Inc
Original Assignee
AVM Inc
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 AVM Inc filed Critical AVM Inc
Priority to CA002347498A priority Critical patent/CA2347498A1/en
Priority to EP00954119A priority patent/EP1123469A2/en
Priority to AU66455/00A priority patent/AU6645500A/en
Priority to JP2001518606A priority patent/JP2003507684A/en
Publication of WO2001014764A2 publication Critical patent/WO2001014764A2/en
Publication of WO2001014764A3 publication Critical patent/WO2001014764A3/en
Anticipated expiration legal-status Critical
Ceased 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
    • F16F9/02—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum
    • F16F9/0209—Telescopic
    • 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
    • F16F9/368—Sealings in 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
    • F16F9/48—Arrangements for providing different damping effects at different parts of the stroke
    • F16F9/483—Arrangements for providing different damping effects at different parts of the stroke characterised by giving a particular shape to the cylinder, e.g. conical
    • 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
    • F16F2224/00—Materials; Material properties
    • F16F2224/04—Fluids
    • F16F2224/046—Fluids pneumatic

Landscapes

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

Abstract

A multiple stop gas spring that has a second or stop piston assembly (66) in addition to a metering piston assembly (64), connected and movable with the gas spring shaft. The stop piston assembly (66) is preferably spaced axially from the metering piston assembly (64). The stop piston assembly may be utilized to stop movement of the shaft in one direction at preselected position(s) along the shaft's normal stroke, and also, or alternatively, to cause the shaft movement in the one direction to slow incrementally to a cushioned stop when the shaft approached the end of its stroke. The shaft may move in the other direction without any impediment to its movement or may stop in both directions.

Description

(88) Date of publication of the international search report: For two-letter codes and other abbreviations, refer to the "Guid-
10 May 2001 ance Notes on Codes and Abbreviations " appearing at the beginning of each regular issue of the PCT Gazette
PCT/US2000/022556 1999-08-19 2000-08-17 Improved gas spring Ceased WO2001014764A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CA002347498A CA2347498A1 (en) 1999-08-19 2000-08-17 Improved gas spring
EP00954119A EP1123469A2 (en) 1999-08-19 2000-08-17 Improved gas spring
AU66455/00A AU6645500A (en) 1999-08-19 2000-08-17 Improved gas spring
JP2001518606A JP2003507684A (en) 1999-08-19 2000-08-17 Improved gas spring

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US14975499P 1999-08-19 1999-08-19
US60/149,754 1999-08-19

Related Child Applications (2)

Application Number Title Priority Date Filing Date
US09787615 A-371-Of-International 2001-07-03
US10/228,512 Division US20030006539A1 (en) 1999-08-19 2002-08-27 Gas spring

Publications (2)

Publication Number Publication Date
WO2001014764A2 WO2001014764A2 (en) 2001-03-01
WO2001014764A3 true WO2001014764A3 (en) 2001-05-10

Family

ID=22531661

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/022556 Ceased WO2001014764A2 (en) 1999-08-19 2000-08-17 Improved gas spring

Country Status (5)

Country Link
EP (1) EP1123469A2 (en)
JP (1) JP2003507684A (en)
AU (1) AU6645500A (en)
CA (1) CA2347498A1 (en)
WO (1) WO2001014764A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005029467A1 (en) * 2005-06-24 2007-01-04 Suspa Holding Gmbh Length adjustable gas spring
GB2576177A (en) * 2018-08-07 2020-02-12 Titus D O O Dekani Improvements in dampers

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE544095A (en) * 1955-09-28 1956-01-14 Renault Improvements to pneumatic cylinders
GB998742A (en) * 1962-03-29 1965-07-21 Automobilove Zd Y Letnany Improvements in or relating to telescopic shock absorbers
US3447644A (en) * 1966-03-17 1969-06-03 Woodhead Mfg Co Ltd Two stage shock absorber
GB1178606A (en) * 1967-03-23 1970-01-21 Woodhead Mfg Company Ltd Improvements relating to Hydraulic Telescopic Shock Absorbers
US4230309A (en) * 1976-12-30 1980-10-28 Stabilus Gmbh Gas spring with automatic locking mechanism
DE3546236A1 (en) * 1985-12-28 1987-07-02 Bauer Fritz & Soehne Ohg Gas-filled spring with end-position damping
DE4004714A1 (en) * 1990-02-15 1991-08-22 Stabilus Gmbh GAS SPRING WITH LIFTING INTERMEDIATE STOP
US5157806A (en) * 1991-12-09 1992-10-27 George Wartian Door closing piston-cylinder assembly
US5163204A (en) * 1990-07-09 1992-11-17 Jackson Christopher B Marine door movement control apparatus
DE4227554A1 (en) * 1992-08-20 1994-02-24 Stabilus Gmbh Fluid compression spring for opening car boots - has separating piston unit producing two ring like work chambers connectable with each other by valve units operating according to pressure difference or direction of movement of separating piston.
US5477589A (en) * 1994-08-12 1995-12-26 Lan; Mei-Shu Piston-type door closer with adjustable closing speeds
DE19642806C1 (en) * 1996-06-21 1998-01-02 Hoerauf & Kohler Verwaltungs K Pneumatic motion damper featuring simple manufacture and solid reliability
DE19707633C1 (en) * 1997-02-26 1998-07-09 Mannesmann Sachs Ag Seal between two axially moving components in e.g. shock absorber
US5799759A (en) * 1996-03-08 1998-09-01 Stabilus Gmbh Hydraulic strut for a motor vehicle

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE544095A (en) * 1955-09-28 1956-01-14 Renault Improvements to pneumatic cylinders
GB998742A (en) * 1962-03-29 1965-07-21 Automobilove Zd Y Letnany Improvements in or relating to telescopic shock absorbers
US3447644A (en) * 1966-03-17 1969-06-03 Woodhead Mfg Co Ltd Two stage shock absorber
GB1178606A (en) * 1967-03-23 1970-01-21 Woodhead Mfg Company Ltd Improvements relating to Hydraulic Telescopic Shock Absorbers
US4230309A (en) * 1976-12-30 1980-10-28 Stabilus Gmbh Gas spring with automatic locking mechanism
DE3546236A1 (en) * 1985-12-28 1987-07-02 Bauer Fritz & Soehne Ohg Gas-filled spring with end-position damping
DE4004714A1 (en) * 1990-02-15 1991-08-22 Stabilus Gmbh GAS SPRING WITH LIFTING INTERMEDIATE STOP
US5163204A (en) * 1990-07-09 1992-11-17 Jackson Christopher B Marine door movement control apparatus
US5157806A (en) * 1991-12-09 1992-10-27 George Wartian Door closing piston-cylinder assembly
DE4227554A1 (en) * 1992-08-20 1994-02-24 Stabilus Gmbh Fluid compression spring for opening car boots - has separating piston unit producing two ring like work chambers connectable with each other by valve units operating according to pressure difference or direction of movement of separating piston.
US5477589A (en) * 1994-08-12 1995-12-26 Lan; Mei-Shu Piston-type door closer with adjustable closing speeds
US5799759A (en) * 1996-03-08 1998-09-01 Stabilus Gmbh Hydraulic strut for a motor vehicle
DE19642806C1 (en) * 1996-06-21 1998-01-02 Hoerauf & Kohler Verwaltungs K Pneumatic motion damper featuring simple manufacture and solid reliability
DE19707633C1 (en) * 1997-02-26 1998-07-09 Mannesmann Sachs Ag Seal between two axially moving components in e.g. shock absorber

Also Published As

Publication number Publication date
JP2003507684A (en) 2003-02-25
AU6645500A (en) 2001-03-19
CA2347498A1 (en) 2001-03-01
EP1123469A2 (en) 2001-08-16
WO2001014764A2 (en) 2001-03-01

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