GB1221970A – Hydraulic shock-absorbers
– Google Patents
GB1221970A – Hydraulic shock-absorbers
– Google Patents
Hydraulic shock-absorbers
Info
Publication number
GB1221970A
GB1221970A
GB46585/68A
GB4658568A
GB1221970A
GB 1221970 A
GB1221970 A
GB 1221970A
GB 46585/68 A
GB46585/68 A
GB 46585/68A
GB 4658568 A
GB4658568 A
GB 4658568A
GB 1221970 A
GB1221970 A
GB 1221970A
Authority
GB
United Kingdom
Prior art keywords
valve
piston
passages
closed
cylinder
Prior art date
1968-10-01
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
GB46585/68A
Inventor
William Henry Lloyd
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.)
Woodhead Manufacturing Co Ltd
Original Assignee
Woodhead Manufacturing 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.)
1968-10-01
Filing date
1968-10-01
Publication date
1971-02-10
1968-10-01
Application filed by Woodhead Manufacturing Co Ltd
filed
Critical
Woodhead Manufacturing Co Ltd
1968-10-01
Priority to GB46585/68A
priority
Critical
patent/GB1221970A/en
1969-09-22
Priority to NL6914355A
priority
patent/NL6914355A/xx
1969-09-30
Priority to FR6933253A
priority
patent/FR2019573A1/fr
1969-09-30
Priority to ZA696917*A
priority
patent/ZA696917B/en
1969-10-01
Priority to DE19691949589
priority
patent/DE1949589A1/en
1969-10-01
Priority to AU61691/69A
priority
patent/AU6169169A/en
1969-10-01
Priority to BE739695D
priority
patent/BE739695A/xx
1971-02-10
Publication of GB1221970A
publication
Critical
patent/GB1221970A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
F16F9/10—Springs, 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
F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
F16F9/16—Devices 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
F16F9/18—Devices 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
F16F9/185—Bitubular units
Abstract
1,221,970. Springs. WOODHEAD MFG. CO. Ltd. 1 Oct., 1968, No. 46585/68. Heading F2S. An hydraulic shock absorber has a piston 4, Figs. 1 and 2, which is mounted on a piston rod 13, is reciprocable in a cylinder 1, and has passages 5, 6 therein which connect a chamber X of the cylinder with a chamber Y of the cylinder. An annular reservoir is formed between the cylinder 1 and an outer coaxial member 2, the reservoir being connected to the chamber Y through a valve 23 and passages 30, and being separated into chambers 32, 33 by means of a part annular wall 34 which extends around an arc of 220 degrees. A gap of 140 degrees in the wall 34 forms a connection between the reservoir chambers 32, 33. The passages 5 in the piston 4 are closed by a valve-plate 7 being urged by a spring 8 and the passages 6 are closed by a valveplate 10 being urged by a spring 11 and a nut 12. The piston-rod 13 passes through an end closure disc 14 and a seal 15 which carries a cover 16. The valve 23 is mounted in the cylinder 1, has a bore 24 closed by a disc 25 urged by a spring 26, the disc 25 carrying a valve member 27 which is urged by a spring 27a to close a passage 28 which extends through the valve member 27. In operation rebound loads are provided by the valve 10 whilst compression loads are provided partly by the valve 7 and partly by the valve 27. As the length of the shock absorber is reduced under compression loads, oil passes through the valve 7 and oil displaced by the piston-rod entering the cylinder passes to the reservoir 31, via passages 28, 30. The chamber 33 is maintained full of oil to prevent ingress of air therein and excess oil is passed through the gap in the part-annular wall 34 and into the chamber 32. On return of the piston rod, its volume is recuperated by oil from the reservoir 33 which passes through the valve 25 against the force of the spring 26, oil also passes through the valve 10 on the piston 4. In a modification a shock absorber is of the one-way type and comprises a piston 50, Fig. 3 (not shown), having bores 60 closed by a one-way valve 63; a closure member 56, having passages 61 closed by a one-way valve 64; and a closure member 55, having bores 62 closed by a one-way valve 65.
GB46585/68A
1968-10-01
1968-10-01
Hydraulic shock-absorbers
Expired
GB1221970A
(en)
Priority Applications (7)
Application Number
Priority Date
Filing Date
Title
GB46585/68A
GB1221970A
(en)
1968-10-01
1968-10-01
Hydraulic shock-absorbers
NL6914355A
NL6914355A
(en)
1968-10-01
1969-09-22
FR6933253A
FR2019573A1
(en)
1968-10-01
1969-09-30
ZA696917*A
ZA696917B
(en)
1968-10-01
1969-09-30
Hydraulic shock-absorbers
DE19691949589
DE1949589A1
(en)
1968-10-01
1969-10-01
Hydraulic shock absorbers
AU61691/69A
AU6169169A
(en)
1968-10-01
1969-10-01
Hydraulic shock-absorbers
BE739695D
BE739695A
(en)
1968-10-01
1969-10-01
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
GB46585/68A
GB1221970A
(en)
1968-10-01
1968-10-01
Hydraulic shock-absorbers
Publications (1)
Publication Number
Publication Date
GB1221970A
true
GB1221970A
(en)
1971-02-10
Family
ID=10441833
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB46585/68A
Expired
GB1221970A
(en)
1968-10-01
1968-10-01
Hydraulic shock-absorbers
Country Status (7)
Country
Link
AU
(1)
AU6169169A
(en)
BE
(1)
BE739695A
(en)
DE
(1)
DE1949589A1
(en)
FR
(1)
FR2019573A1
(en)
GB
(1)
GB1221970A
(en)
NL
(1)
NL6914355A
(en)
ZA
(1)
ZA696917B
(en)
Families Citing this family (4)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
JPS5759723Y2
(en)
*
1978-04-01
1982-12-20
US4254949A
(en)
*
1978-06-12
1981-03-10
Brentham Jerry D
Leg curl exercising device
DE3437653A1
(en)
*
1984-10-13
1986-04-17
Rheinmetall GmbH, 4000 Düsseldorf
DAMPING DEVICE FOR A MACHINE WEAPON
JP3009151B2
(en)
*
1988-04-04
2000-02-14
株式会社ユニシアジェックス
Hydraulic shock absorber
1968
1968-10-01
GB
GB46585/68A
patent/GB1221970A/en
not_active
Expired
1969
1969-09-22
NL
NL6914355A
patent/NL6914355A/xx
unknown
1969-09-30
ZA
ZA696917*A
patent/ZA696917B/en
unknown
1969-09-30
FR
FR6933253A
patent/FR2019573A1/fr
not_active
Withdrawn
1969-10-01
AU
AU61691/69A
patent/AU6169169A/en
not_active
Expired
1969-10-01
BE
BE739695D
patent/BE739695A/xx
unknown
1969-10-01
DE
DE19691949589
patent/DE1949589A1/en
active
Pending
Also Published As
Publication number
Publication date
AU6169169A
(en)
1971-04-08
FR2019573A1
(en)
1970-07-03
DE1949589A1
(en)
1970-04-09
NL6914355A
(en)
1970-04-03
BE739695A
(en)
1970-03-16
ZA696917B
(en)
1971-05-27
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