GB554732A - Improvements in or relating to hydraulic shock absorbers - Google Patents

Improvements in or relating to hydraulic shock absorbers

Info

Publication number
GB554732A
GB554732A GB60142A GB60142A GB554732A GB 554732 A GB554732 A GB 554732A GB 60142 A GB60142 A GB 60142A GB 60142 A GB60142 A GB 60142A GB 554732 A GB554732 A GB 554732A
Authority
GB
United Kingdom
Prior art keywords
impeller
passages
collars
dashpot
flanges
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
GB60142A
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 GB60142A priority Critical patent/GB554732A/en
Publication of GB554732A publication Critical patent/GB554732A/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
    • F16F9/50—Special means providing automatic damping adjustment, i.e. self-adjustment of damping by particular sliding movements of a valve element, other than flexions or displacement of valve discs; Special means providing self-adjustment of spring characteristics
    • F16F9/512—Means responsive to load action, i.e. static load on the damper or dynamic fluid pressure changes in the damper, e.g. due to changes in velocity
    • 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
    • F16F9/50—Special means providing automatic damping adjustment, i.e. self-adjustment of damping by particular sliding movements of a valve element, other than flexions or displacement of valve discs; Special means providing self-adjustment of spring characteristics
    • F16F9/512—Means responsive to load action, i.e. static load on the damper or dynamic fluid pressure changes in the damper, e.g. due to changes in velocity
    • F16F9/5126—Piston, or piston-like valve elements

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)

Abstract

554,732. Hydraulic shock-absorbers. NEWTON, N. B. Jan. 15, 1942, No. 601. [Class 108 (iii)] A hydraulic shock absorber comprises a hydraulic cylinder a, an impeller b having fluid transfer passages c therethrough, an impeller shaft d on which the impeller slides, and collars e, f, which carry flanges e<SP>2</SP>, f <SP>2</SP> which mask the passages c in progressive degree as they approach the impeller. The collars e, f are located between spring rings e<SP>1</SP>, f <SP>1</SP> and limit the lost motion between the impeller and the shaft. The collars, with recesses g in the impeller, form dashpots which control the approach of the masking flanges c<SP>2</SP>, f<SP>2</SP> towards the passages c. Springs i return the impeller to a "normal" position. In operation :-A slow oscillating movement is intensely damped because a slow movement allows a dashpot to close and hence allows substantial masking of the passages c (there is never complete masking, a free space, adjustable as by a washer h, being left between the impeller and the underside of the flange). A quick oscillating movement is not intensely damped because the quick movement does not allow the dashpot time to close, and hence there is no substantial masking of the passages c. The dashpot action may be modified as by providing tapered formations or fluid passages in the collars e, f and recesses g. In modified constructions, (a) the flanges e<SP>2</SP>, f <SP>2</SP> are separate from but spring-urged against the collars e, f, (b) the flanges e<SP>2</SP>, f are perforated, the perforations being normally (i.e. to slow movements) closed by a spring-urged washer which rises when the piston rod moves quickly, (c) (Fig. 4) the impeller is in two relatively-movable parts, o, p, having passages o<SP>1</SP>, p' which are masked by the impellers themselves. A collar r forms the male dashpot element. Adjustable stops s limit the approach of the parts o, p toward each other. Spring-loaded bolts t draw the parts o, p together, (d) there may be communication, adjustably restricted, between the dashpot spaces on each side of the piston as by means of a screw-valve-controlled passage in the impeller or in the rod.
GB60142A 1942-01-15 1942-01-15 Improvements in or relating to hydraulic shock absorbers Expired GB554732A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB60142A GB554732A (en) 1942-01-15 1942-01-15 Improvements in or relating to hydraulic shock absorbers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB60142A GB554732A (en) 1942-01-15 1942-01-15 Improvements in or relating to hydraulic shock absorbers

Publications (1)

Publication Number Publication Date
GB554732A true GB554732A (en) 1943-07-16

Family

ID=9707245

Family Applications (1)

Application Number Title Priority Date Filing Date
GB60142A Expired GB554732A (en) 1942-01-15 1942-01-15 Improvements in or relating to hydraulic shock absorbers

Country Status (1)

Country Link
GB (1) GB554732A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2911072A (en) * 1954-08-03 1959-11-03 Gen Motors Corp Hydraulic shock absorber
US2933310A (en) * 1958-04-22 1960-04-19 Schnitzer Emanuel Floating piston band pass shock absorber
US2937724A (en) * 1957-09-30 1960-05-24 Schnitzer Emanuel Double acting low band pass shock absorber
US2947386A (en) * 1957-09-27 1960-08-02 Schnitzer Emanuel Band pass shock absorbers with snubbers
DE1300367B (en) * 1966-01-19 1969-07-31 Litton Industries Inc Vibration damper
DE2622879A1 (en) * 1975-05-23 1976-11-25 Allinquant Sa TELESCOPIC SYSTEM, IN PARTICULAR PNEUMATIC SPRING
DE2800630A1 (en) * 1978-01-07 1979-07-19 Stabilus Gmbh VIBRATION DAMPER WITH SPEED-DEPENDENT CHANGE IN THE DAMPING EFFECT
DE2950679A1 (en) * 1979-12-15 1981-06-19 Volkswagenwerk Ag, 3180 Wolfsburg Shock absorber piston valve - forms preassembled unit held together by eccentric rod running axially
FR2587773A1 (en) * 1985-09-25 1987-03-27 Allinquant Sa Telescopic hydraulic damper, fitted in particular for damping the oscillations of engines
US6454206B2 (en) 2000-02-29 2002-09-24 Gkn Westland Helicopters Limited Vibration damping apparatus

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2911072A (en) * 1954-08-03 1959-11-03 Gen Motors Corp Hydraulic shock absorber
US2947386A (en) * 1957-09-27 1960-08-02 Schnitzer Emanuel Band pass shock absorbers with snubbers
US2937724A (en) * 1957-09-30 1960-05-24 Schnitzer Emanuel Double acting low band pass shock absorber
US2933310A (en) * 1958-04-22 1960-04-19 Schnitzer Emanuel Floating piston band pass shock absorber
DE1300367B (en) * 1966-01-19 1969-07-31 Litton Industries Inc Vibration damper
DE2622879A1 (en) * 1975-05-23 1976-11-25 Allinquant Sa TELESCOPIC SYSTEM, IN PARTICULAR PNEUMATIC SPRING
DE2800630A1 (en) * 1978-01-07 1979-07-19 Stabilus Gmbh VIBRATION DAMPER WITH SPEED-DEPENDENT CHANGE IN THE DAMPING EFFECT
DE2950679A1 (en) * 1979-12-15 1981-06-19 Volkswagenwerk Ag, 3180 Wolfsburg Shock absorber piston valve - forms preassembled unit held together by eccentric rod running axially
FR2587773A1 (en) * 1985-09-25 1987-03-27 Allinquant Sa Telescopic hydraulic damper, fitted in particular for damping the oscillations of engines
US6454206B2 (en) 2000-02-29 2002-09-24 Gkn Westland Helicopters Limited Vibration damping apparatus

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