US3618928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resilient cylinder liquid spring
Assignee: Individual
•
Filing: 1969-08-14
•
Granted: 1971-11-09
•
Expires: 1989-08-14
Abstract
Abstract A low pressure operating liquid spring and/or shock absorber capable of operating under varying impact loads is provided for use in suspension systems for passenger vehicles and the like.
Inventors
- 👤 Paul H Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:12
CPC Classifications
F; F16; F16F; F16F9/00; F16F9/32; F16F9/3207; F16F9/3235; F16F5/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
110 words
An energy storage device comprising: a. an elastically deformable cylinder means, b. an inner pressure tube centrally disposed within said cylinder means, c. piston means extending into said cylinder means and slidably disposed within said inner pressure tube, d. compressible liquid normally filling said cylinder means in surrounding relationship and in communication with said piston means, e. aperture means formed in said inner pressure tube for limiting the flow of compressible liquid between said cylinder means and said inner pressure tube, and f. said compressible liquid having a substantial coefficient of thermal expansion and said cylinder means having a coefficient of thermal expansion related to that of said compressible liquid.
Claim 2
Dependent Claim
110 words
An energy storage device comprising: a. an elastically deformable cylinder means, b. an inner pressure tube centrally disposed within said cylinder means, c. piston means extending into said cylinder means and slidably disposed within said inner pressure tube, d. compressible liquid normally filling said cylinder means in surrounding relationship and in communication with said piston means, e. aperture means formed in said inner pressure tube for limiting the flow of compressible liquid between said cylinder means and said inner pressure tube, and f. said compressible liquid having a substantial coefficient of thermal expansion and said cylinder means having a coefficient of thermal expansion related to that of said compressible liquid.
Claim 3
Dependent Claim
49 words
The device of claim 1 further characterized in that: a. said piston means is movable in said inner pressure tube past said aperture means to amplify the flow of fluid through said aperture means to said tube in the area of said smaller piston section whereby energy is stored.
Claim 4
Dependent Claim
53 words
The device of claim 1 further characterized in that: a. said cylinder is constructed of a material wherein it has substantial elastic deformation capability so that it deforms radially and acts as a spring seeking return to its normal configuration to provide at least 10 percent of the stored energy of said device.
Claim 5
Dependent Claim
53 words
The device of claim 1 further characterized in that: a. said cylinder is constructed of a material wherein it has substantial elastic deformation capability so that it deforms radially and acts as a spring seeking return to its normal configuration to provide at least 50 percent of the stored energy of said device.
Claim 6
Dependent Claim
35 words
The energy storage device of claim 1 further characterized by and including: a. means heating said liquid and said cylinder means to control the energy storagE capabilities of said device mounted within said cylinder means.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-08 | 1975-05-10 | 1975-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-08 | 1979-05-10 | 1979-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-08 | 1983-05-10 | 1983-11-09 | $7700.00 | Window Closed / Lapsed |