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WO1999001677A3 - Piston rod and piston assembly - Google Patents

Piston rod and piston assembly Download PDF

Info

Publication number
WO1999001677A3
WO1999001677A3 PCT/US1998/013196 US9813196W WO9901677A3 WO 1999001677 A3 WO1999001677 A3 WO 1999001677A3 US 9813196 W US9813196 W US 9813196W WO 9901677 A3 WO9901677 A3 WO 9901677A3
Authority
WO
WIPO (PCT)
Prior art keywords
piston
attachment portion
rod
piston rod
exterior
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/US1998/013196
Other languages
French (fr)
Other versions
WO1999001677A2 (en
Inventor
Ricardo R Baldomero
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.)
Rockshox Inc
Original Assignee
Rockshox 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 Rockshox Inc filed Critical Rockshox Inc
Priority to CA002264636A priority Critical patent/CA2264636A1/en
Priority to EP98932858A priority patent/EP0923681A4/en
Priority to AU82647/98A priority patent/AU8264798A/en
Publication of WO1999001677A2 publication Critical patent/WO1999001677A2/en
Publication of WO1999001677A3 publication Critical patent/WO1999001677A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K25/00—Axle suspensions
    • B62K25/04—Axle suspensions for mounting axles resiliently on cycle frame or fork
    • B62K25/06—Axle suspensions for mounting axles resiliently on cycle frame or fork with telescopic fork, e.g. including auxiliary rocking arms
    • B62K25/08—Axle suspensions for mounting axles resiliently on cycle frame or fork with telescopic fork, e.g. including auxiliary rocking arms for front wheel
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Damping Devices (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Abstract

A lightweight low cost damping assembly having a piston rod (10) on which a piston (40) is formed such that fastener elements are not needed to secure the piston onto the piston rod. Preferably, the piston rod is formed by chrome plating the exterior of a tubular steel rod except at a piston attachment portion. The piston attachment portion is specially shaped such that the piston may be formed threon and coupled thereto by the inter-engaging of the piston with the shape of the piston attachment portion. Most preferably, the piston attachment portion is in the form of shallow grooves, knurls (44) or dimples in the exterior of the piston rod and the piston is injection molded thereon. The material of the piston molds itself into the shape of the piston attachment portion, thereby resulting in a secure coupling between the piston and the piston rod.
PCT/US1998/013196 1997-07-03 1998-06-25 Piston rod and piston assembly Ceased WO1999001677A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CA002264636A CA2264636A1 (en) 1997-07-03 1998-06-25 Piston rod and piston assembly
EP98932858A EP0923681A4 (en) 1997-07-03 1998-06-25 Piston rod and piston assembly
AU82647/98A AU8264798A (en) 1997-07-03 1998-06-25 Piston rod and piston assembly

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US5163697P 1997-07-03 1997-07-03
US60/051,636 1997-07-03
US2878098A 1998-02-24 1998-02-24
US09/028,780 1998-02-24

Publications (2)

Publication Number Publication Date
WO1999001677A2 WO1999001677A2 (en) 1999-01-14
WO1999001677A3 true WO1999001677A3 (en) 1999-06-17

Family

ID=26704072

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1998/013196 Ceased WO1999001677A2 (en) 1997-07-03 1998-06-25 Piston rod and piston assembly

Country Status (5)

Country Link
EP (1) EP0923681A4 (en)
AU (1) AU8264798A (en)
CA (1) CA2264636A1 (en)
TW (1) TW445228B (en)
WO (1) WO1999001677A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7556032B2 (en) * 2004-06-15 2009-07-07 Smart Parts, Inc. Pneumatic paintball gun

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4099602A (en) * 1977-08-31 1978-07-11 P. L. Porter Company Hydraulic positioner with bidirectional detenting action
US4877114A (en) * 1988-07-19 1989-10-31 Tayco Developments, Inc. Adjustable fluid amplified shock absorber
US5275264A (en) * 1992-09-25 1994-01-04 Calzolari Isella Setting shock absorber for cycles
US5456480A (en) * 1994-06-06 1995-10-10 Rockshox, Inc. Fork suspension with variable hydraulic damping
US5549182A (en) * 1994-06-07 1996-08-27 Suspa Compart Aktiengesellschaft Frictional damper, in particular for spinner-type washing machines

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE920294C (en) * 1952-06-21 1954-11-18 Hemscheidt Maschf Hermann Hydraulic telescopic vibration damper, especially for motor vehicles
US2838300A (en) * 1957-04-17 1958-06-10 Erie Resistor Corp Dashpot
US5070971A (en) * 1990-04-23 1991-12-10 General Motors Corporation Molded piston for a hydraulic damper
US5163697A (en) 1991-04-22 1992-11-17 Kastan B Linn Bicycle shock absorbing and energy damping apparatus
US5465647A (en) * 1994-11-14 1995-11-14 Polygon Company Fluid cylinder end cap assembly

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4099602A (en) * 1977-08-31 1978-07-11 P. L. Porter Company Hydraulic positioner with bidirectional detenting action
US4877114A (en) * 1988-07-19 1989-10-31 Tayco Developments, Inc. Adjustable fluid amplified shock absorber
US5275264A (en) * 1992-09-25 1994-01-04 Calzolari Isella Setting shock absorber for cycles
US5456480A (en) * 1994-06-06 1995-10-10 Rockshox, Inc. Fork suspension with variable hydraulic damping
US5549182A (en) * 1994-06-07 1996-08-27 Suspa Compart Aktiengesellschaft Frictional damper, in particular for spinner-type washing machines

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP0923681A4 *

Also Published As

Publication number Publication date
EP0923681A2 (en) 1999-06-23
CA2264636A1 (en) 1999-01-14
EP0923681A4 (en) 2000-02-23
AU8264798A (en) 1999-01-25
WO1999001677A2 (en) 1999-01-14
TW445228B (en) 2001-07-11

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