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US3870130A
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US
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Shock absorber
Assignee: GABRIEL OF CANADA Ltd
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Filing: 1973-04-09
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Granted: 1975-03-11
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Expires: 1993-04-09
Abstract
Abstract Disclosed is an impact absorber which employs a variable orifice together with a media having essentially hysteresis curve property i.e., a thixotropic media - in order to provide a shock absorber with an essentially linear retarding force to impact.
Inventors
- 👤 Gerald R Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:05
CPC Classifications
F; F16; F16F; F16F9/00; F16F9/30; F16F9/303
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
An impact absorber comprising: a. a pressure cylinder; b. an orificed metering sleeve disposed within the pressure cylinder; c. an accumulator cylinder having a closure at one end; d. a movable damping piston affixed to the other end of the accumulator cylinder, the piston, disposed within the sleeve of the pressure cylinder and adapted for reciprocation therein, the piston including orifice means communicating the interior of the accumulator cylinder with the interior of the sleeve through the orifice of the sleeve, irrespective of the position of the piston within the sleeve; e. a floating piston located within the accumulator cylinder; f. a thixotropic fluid disposed in the sleeve whereby impact on the accumulator cylinder causes the thixotropic fluid to flow through the orifice of the absorber to present an essentially constant retarding force against the impact.
Claim 2
Dependent Claim
136 words
An impact absorber comprising: a. a pressure cylinder; b. an orificed metering sleeve disposed within the pressure cylinder; c. an accumulator cylinder having a closure at one end; d. a movable damping piston affixed to the other end of the accumulator cylinder, the piston, disposed within the sleeve of the pressure cylinder and adapted for reciprocation therein, the piston including orifice means communicating the interior of the accumulator cylinder with the interior of the sleeve through the orifice of the sleeve, irrespective of the position of the piston within the sleeve; e. a floating piston located within the accumulator cylinder; f. a thixotropic fluid disposed in the sleeve whereby impact on the accumulator cylinder causes the thixotropic fluid to flow through the orifice of the absorber to present an essentially constant retarding force against the impact.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |