US3726368A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid amplified liquid spring shocks and/or shock absorbers
Assignee: Tayco Developments Inc
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Filing: 1970-10-30
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Granted: 1973-04-10
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Expires: 1990-10-30
Abstract
Abstract A shock absorber which uses fluid amplification to provide programmed fluid flow and highly efficient shock curves without the necessity of expensive and inefficient metering holes, metering pins, and/or pressure responsive valves is provided by the interaction of: (1) a fluid passage clearance between a shock piston head or vane and the chamber, which houses and is swept by the head or vane, (2) an indentation formed around the periphery of the head or vane, and (3) a plurality of openings between the head or vane and the indentation formed around the periphery of the head or vane.
Inventors
- 👤 P Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:53
CPC Classifications
F; F16; F16F; F16F9/00; F16F9/32; F16F9/58; F16F9/003; F16F9/10; F16F9/14; F16F9/145; F16F9/34; F16F9/3405; F16F9/48
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
177 words
In a shock absorber having a housing means adapted to hold a body of fluid and sweeping means slidably disposed within said housing means for traversing said housing means, said sweeping means having a peripheral surface adjacent said housing means and a transverse sweeping surface which separates said housing means into at least two chambers, the improvement comprising one side of said sweeping means having a first unrestricted fluid passage clearance formed between said housing means and said peripheral surface, an indentation formed about said peripheral surface, and at least one opening which inter-connects said sweeping surface and said peripheral surface to provide a second unrestricted fluid passage opening for the flow of fluid, and the opposite side of said sweeping means having a third single fluid passage inter-connecting said first and second fluid passages, whereby the flow of fluid through said first fluid passage clearance combines with, accelerates and amplifies the flow of fluid through said second fluid passage, said combined flow oF fluid passing entirely through the third single fluid passage in an amplified state.
Claim 2
Dependent Claim
177 words
In a shock absorber having a housing means adapted to hold a body of fluid and sweeping means slidably disposed within said housing means for traversing said housing means, said sweeping means having a peripheral surface adjacent said housing means and a transverse sweeping surface which separates said housing means into at least two chambers, the improvement comprising one side of said sweeping means having a first unrestricted fluid passage clearance formed between said housing means and said peripheral surface, an indentation formed about said peripheral surface, and at least one opening which inter-connects said sweeping surface and said peripheral surface to provide a second unrestricted fluid passage opening for the flow of fluid, and the opposite side of said sweeping means having a third single fluid passage inter-connecting said first and second fluid passages, whereby the flow of fluid through said first fluid passage clearance combines with, accelerates and amplifies the flow of fluid through said second fluid passage, said combined flow oF fluid passing entirely through the third single fluid passage in an amplified state.
Claim 3
Dependent Claim
49 words
The shock absorber of claim 1 wherein fluid passing through said first fluid passage clearance accelerates and amplifies fluid flowing through said second fluid passage openings whereby a greater than seventy percent energy dissipation curve can be generated by the movement of said sweeping means in said housing means.
Claim 4
Dependent Claim
35 words
The shock absorber of claim 1 wherein said housing means is a cylinder and said sweeping means is a piston head which reciprocates within said cylinder and is driven by means of a piston rod.
Claim 5
Dependent Claim
41 words
The shock absorber of claim 3 wherein said indentation formed in the peripheral surface of said piston head is a groove, said groove having a plurality of orifices which interconnect said groove and the transverse sweeping surface of said piston head.
Claim 6
Dependent Claim
155 words
A shock absorber head on a piston rod reciprocally disposed within a cylinder containing a body of fluid, said absorber head providing the equivalent of a pressure responsive valve, said head comprising oppositely disposed transverse sweeping surfaces, one of said surfaces having a first unrestricted clearance fluid passage formed between the periphery of said shock absorber head and said cylinder, a reservoir section formed in the peripheral surface of said absorber head, and at least one second unrestricted fluid passage interconnecting said reservoir section and said body of fluid, and the opposite of said sweeping surfaces having a single third fluid passage inter-connecting said first and second fluid passages, whereby fluid passing through said first clearance fluid passage combines with, accelerates and amplifies the flow of fluid passing through said second fluid passage inter-connecting said reservoir section and said body of fluid, said combined flow of fluid passing entirely through the third single fluid passage.
Claim 7
Dependent Claim
155 words
A shock absorber head on a piston rod reciprocally disposed within a cylinder containing a body of fluid, said absorber head providing the equivalent of a pressure responsive valve, said head comprising oppositely disposed transverse sweeping surfaces, one of said surfaces having a first unrestricted clearance fluid passage formed between the periphery of said shock absorber head and said cylinder, a reservoir section formed in the peripheral surface of said absorber head, and at least one second unrestricted fluid passage interconnecting said reservoir section and said body of fluid, and the opposite of said sweeping surfaces having a single third fluid passage inter-connecting said first and second fluid passages, whereby fluid passing through said first clearance fluid passage combines with, accelerates and amplifies the flow of fluid passing through said second fluid passage inter-connecting said reservoir section and said body of fluid, said combined flow of fluid passing entirely through the third single fluid passage.
Claim 8
Dependent Claim
80 words
The shock absorber head of claim 5 wherein said first clearance fluid passage is formed by a tapered peripheral surface on said head adjacent to and spaced from said cylinder, said reservoir section is an annular groove formed about said tapered, peripheral surface on said head, and said second fluid passage is a plurality of orifices spaced on the transverse surface of said head in contact with said body of fluid which interconnect said transverse surface and said annular groove.
Claim 9
Dependent Claim
21 words
The shock absorber of claim 6 wherein said groove is formed at the midpoint of said peripheral surface on said head.
Claim 10
Dependent Claim
18 words
The shock absorber of claim 6 wherein said shock absorber produces a substantially flat topped energy dissipation curve.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-09 | 1976-10-09 | 1977-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-09 | 1980-10-09 | 1981-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-09 | 1984-10-09 | 1985-04-10 | $7700.00 | Window Closed / Lapsed |