GB657030A - Improvements in or relating to telescopic hydraulic shock absorbers - Google Patents

Improvements in or relating to telescopic hydraulic shock absorbers

Info

Publication number
GB657030A
GB657030A GB3021348A GB3021348A GB657030A GB 657030 A GB657030 A GB 657030A GB 3021348 A GB3021348 A GB 3021348A GB 3021348 A GB3021348 A GB 3021348A GB 657030 A GB657030 A GB 657030A
Authority
GB
United Kingdom
Prior art keywords
valve
pipe
reservoir
piston
spring
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
GB3021348A
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.)
Armstrong Patents Co Ltd
Original Assignee
Armstrong Patents Co Ltd
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 Armstrong Patents Co Ltd filed Critical Armstrong Patents Co Ltd
Priority to US126943A priority Critical patent/US2672952A/en
Priority to GB886/51A priority patent/GB709204A/en
Priority to GB4270/51A priority patent/GB709338A/en
Priority to FR1036729D priority patent/FR1036729A/en
Publication of GB657030A publication Critical patent/GB657030A/en
Priority to FR63553D priority patent/FR63553E/en
Priority to FR63558D priority patent/FR63558E/en
Priority to FR64146D priority patent/FR64146E/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00Check valves
    • F16K15/02Check valves with guided rigid valve members
    • F16K15/025Check valves with guided rigid valve members the valve being loaded by a spring
    • F16K15/026Check valves with guided rigid valve members the valve being loaded by a spring the valve member being a movable body around which the medium flows when the valve is open
    • F16K15/028Check valves with guided rigid valve members the valve being loaded by a spring the valve member being a movable body around which the medium flows when the valve is open the valve member consisting only of a predominantly disc-shaped flat element
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/10Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
    • F16F9/14Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
    • F16F9/16Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
    • F16F9/18Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein
    • F16F9/185Bitubular units
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32Details
    • F16F9/34Special valve constructions; Shape or construction of throttling passages

Landscapes

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

Abstract

657,030. Hydraulic shock absorbers. ARMSTRONG'S PATENTS CO., Ltd., and SMITH. R. Nov. 20, 1948, No. 30213. [Class 108(iii)] In a telescopic hydraulic shock absorber comprising a pressure cylinder 60 and piston 50, a liquid reservoir A external to the cylinder 60, two similarly directed non-return valves, one 53 in the piston and one 62 fixed with respect to the cylinder 60; and a dependent, liquid discharge pipe 70 communicating with the upper end of the pressure cylinder and extending to below the level of liquid in the reservoir, a non- return valveassembly is located at the lower end of the dependent liquid discharge pipe. The cylinder 60 is held between a head 65 and a spider member 61 forming a seat for the valve 62 and having three legs 61a seated on the end of an outer tube 78 of the reservoir A. The valve 62 is of spring steel and is urged to closing position by a spring 64. The pipe 70 is connected with the cylinder 60 by a passage 71 formed in the head 65. The valve 73 has a conical head which is urged by a spring 76 on to a seat 72 formed in the pipe 70. The seat 72 may alternatively be formed by a constriction in the pipe 70 or by the end surface of the pipe, the valve then being mounted in a tube of slightly larger bore, Figs. 2, 3 Provisional Specification, (not shown). Flow through the valve 73 to the reservoir takes place through a port 77 in the wall of the pipe 70. Flutter of the valve 73 is damped by the provision of a piston portion 73a on the valve having a predetermined clearance in the pipe 70, and in addition a passage of small bore may be provided in the plug 75 which closes the pipe 70, Fig. 4, Provisional Specification, (not shown). The valve 53. comprises a cylindrical member slidable within a bore in the piston. The valve 53 has a spherical head which is urged by a spring 56 on to an annular seating, provided by an annular flanged member 55. A washer 57 for positioning the member. 55, is selected according to the valve performance characteristic desired. Valve flutter is damped by flow through the clearance provided between the valve and its bore in the piston, and through a restricted passage 58. A small groove 84 is formed in the spherical head of the valve 53 to permit a bleeding action on small relative movement of the device. A similar groove may be provided in the head of the valve 73. In a modified construction of valve 73, the latter is replaced by a plate valve 92, Fig. 7, mounted in a housing 90 and upwardly urged on to a seat 90a by an annular spring 93 of waved formation. Liquid passing from the pipe 70 is supplied to the face of the valve 92 by means of an annular recess 95 in the housing 90 which is in communication with the pipe 70. The housing 90 is disposed halfway along the length of the reservoir and functions as a baffle. An abutment 94 for the spring 93 is located by a spur edge 90a of the housing but it may alternatively seat on a screw-adjustable plug. A nut 79, Fig. 5, threaded in the outer end of the tube 78, loads packing 80, and a sealing ring 66 which has a series of internal lips and seats on annular spring 67 of waved formation. Liquid passing through the head 65 may drain to the reservoir through a passage 69. In a modified construction, Fig. 1, Provisional Specification, (not shown) the shock absorber mounting eyes 81, 82 are replaced by axially-disposed bolts welded to the end faces of the tube 78 and dust shield 83 respectively. The. bolts carry respective nuts and pairs of annular rubber blocks between which the frame and axle members are clamped. Operation. On compression, liquid passes upwards through the valve 53, and via passage 71, pipe 70, valve 73, and ports 77, to the reservoir A, valve 62 being'maintained closed. On extension, liquid passes from the reservoir A through valve 62 to the cylinder space below the piston. The valve 53 remains closed and liquid above the piston passes as before via passage 71 &c. to the reservoir.
GB3021348A 1948-11-20 1948-11-20 Improvements in or relating to telescopic hydraulic shock absorbers Expired GB657030A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
US126943A US2672952A (en) 1948-11-20 1949-11-14 Telescopic hydraulic shock absorber
GB886/51A GB709204A (en) 1948-11-20 1951-01-12 Improvements in or relating to telescopic hydraulic shock absorbers
GB4270/51A GB709338A (en) 1948-11-20 1951-02-22 Improvements in or relating to telescopic hydraulic shock absorbers
FR1036729D FR1036729A (en) 1948-11-20 1951-02-26 Improvements to telescopic hydraulic shock absorbers
FR63553D FR63553E (en) 1948-11-20 1952-12-04 Improvements to telescopic hydraulic shock absorbers
FR63558D FR63558E (en) 1948-11-20 1952-12-05 Improvements to telescopic hydraulic shock absorbers
FR64146D FR64146E (en) 1948-11-20 1952-12-12 Improvements to telescopic hydraulic shock absorbers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3085852A GB736427A (en) 1952-12-05 1952-12-05 Improvements in valves for telescopic hydraulic shock absorbers

Publications (1)

Publication Number Publication Date
GB657030A true GB657030A (en) 1951-09-05

Family

ID=10314230

Family Applications (2)

Application Number Title Priority Date Filing Date
GB3021348A Expired GB657030A (en) 1948-11-20 1948-11-20 Improvements in or relating to telescopic hydraulic shock absorbers
GB3085852A Expired GB736427A (en) 1948-11-20 1952-12-05 Improvements in valves for telescopic hydraulic shock absorbers

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB3085852A Expired GB736427A (en) 1948-11-20 1952-12-05 Improvements in valves for telescopic hydraulic shock absorbers

Country Status (1)

Country Link
GB (2) GB657030A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114427582A (en) * 2022-03-02 2022-05-03 宁波一力减震器有限公司 Low-resistance lockable gas spring

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4601461A (en) * 1984-05-14 1986-07-22 Keystone Industries Inc. Lading protection device
WO2013116727A2 (en) * 2012-02-01 2013-08-08 Weatherford/Lamb, Inc. Self-cleaning disc valve for piston pump

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114427582A (en) * 2022-03-02 2022-05-03 宁波一力减震器有限公司 Low-resistance lockable gas spring

Also Published As

Publication number Publication date
GB736427A (en) 1955-09-07

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