FR2393985A1 - PERFECTED PISTON FOR PROGRESSIVE ACTION PNEUMATIC SPRING - Google Patents

PERFECTED PISTON FOR PROGRESSIVE ACTION PNEUMATIC SPRING

Info

Publication number
FR2393985A1
FR2393985A1 FR787817054A FR7817054A FR2393985A1 FR 2393985 A1 FR2393985 A1 FR 2393985A1 FR 787817054 A FR787817054 A FR 787817054A FR 7817054 A FR7817054 A FR 7817054A FR 2393985 A1 FR2393985 A1 FR 2393985A1
Authority
FR
France
Prior art keywords
cylindrical body
pneumatic spring
piston
progressive action
action pneumatic
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
FR787817054A
Other languages
French (fr)
Other versions
FR2393985B1 (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.)
Plastica & Met Ind
Original Assignee
Plastica & Met Ind
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 ES1977229164U external-priority patent/ES229164Y/en
Priority claimed from ES1978234964U external-priority patent/ES234964Y/en
Application filed by Plastica & Met Ind filed Critical Plastica & Met Ind
Publication of FR2393985A1 publication Critical patent/FR2393985A1/en
Application granted granted Critical
Publication of FR2393985B1 publication Critical patent/FR2393985B1/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
    • F16F9/36—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
    • F16F9/02—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
    • F16F9/0227—Telescopic characterised by the piston construction
    • 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)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Fluid-Damping Devices (AREA)
  • Actuator (AREA)

Abstract

Le corps cylindrique principal 1 est doté dans l'une de ses bases d'une rainure annulaire concentrique 5, qui s'interrompt avant d'arriver à une dépression angulaire 6, à fond plat, qui affecte la surface latérale externe du corps cylindrique ou piston 1, précisément dans une zone où cette surface est conque. Le sommet interne de cette dépression angulaire 6 constitue l'embouchure d'un trou 8 aligné avec un autre trou formé dans la base opposée du corps cylindrique 1, la communication s'établissant entre l'embouchure des deux trous par un passage coaxial cylindrique.The main cylindrical body 1 is provided in one of its bases with a concentric annular groove 5, which stops before arriving at an angular depression 6, with a flat bottom, which affects the external lateral surface of the cylindrical body or piston 1, precisely in an area where this surface is conch. The internal apex of this angular depression 6 constitutes the mouth of a hole 8 aligned with another hole formed in the opposite base of the cylindrical body 1, the communication being established between the mouth of the two holes by a cylindrical coaxial passage.

FR787817054A 1977-06-08 1978-06-07 PERFECTED PISTON FOR PROGRESSIVE ACTION PNEUMATIC SPRING Granted FR2393985A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES1977229164U ES229164Y (en) 1977-06-08 1977-06-08 PERFECTED PLUNGER FOR PROGRESSIVE ACTION PNEUMATIC SPRING.
ES1978234964U ES234964Y (en) 1978-03-28 1978-03-28 PERFECTED PISTON.

Publications (2)

Publication Number Publication Date
FR2393985A1 true FR2393985A1 (en) 1979-01-05
FR2393985B1 FR2393985B1 (en) 1983-01-07

Family

ID=26155401

Family Applications (1)

Application Number Title Priority Date Filing Date
FR787817054A Granted FR2393985A1 (en) 1977-06-08 1978-06-07 PERFECTED PISTON FOR PROGRESSIVE ACTION PNEUMATIC SPRING

Country Status (5)

Country Link
BR (1) BR7803694A (en)
DE (1) DE2824502A1 (en)
FR (1) FR2393985A1 (en)
GB (1) GB1602780A (en)
IT (1) IT1111184B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1026421A2 (en) * 1999-01-27 2000-08-09 Draftex Industries Limited Gas spring

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10115980C2 (en) * 2001-03-30 2003-04-10 Pnp Luftfedersysteme Gmbh Gas spring damper unit for a motor vehicle
GB2576177A (en) * 2018-08-07 2020-02-12 Titus D O O Dekani Improvements in dampers

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2312925A7 (en) * 1975-05-07 1976-12-24 Allinquant Fernand Shock absorber for road vehicle - has piston with twelve axial bores covered by disc springs

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2312925A7 (en) * 1975-05-07 1976-12-24 Allinquant Fernand Shock absorber for road vehicle - has piston with twelve axial bores covered by disc springs

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1026421A2 (en) * 1999-01-27 2000-08-09 Draftex Industries Limited Gas spring
EP1026421A3 (en) * 1999-01-27 2000-12-27 Draftex Industries Limited Gas spring

Also Published As

Publication number Publication date
DE2824502A1 (en) 1979-01-11
BR7803694A (en) 1979-01-16
GB1602780A (en) 1981-11-18
IT7824292A0 (en) 1978-06-07
IT1111184B (en) 1986-01-13
FR2393985B1 (en) 1983-01-07

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Legal Events

Date Code Title Description
ST Notification of lapse