US4236387A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Energy storing device
Assignee: Individual
•
Filing: 1979-01-26
•
Granted: 1980-12-02
•
Expires: 1999-01-26
Abstract
Abstract An energy storing device comprising an elastic cylindrical body of a diameter gradually increasing from one end thereof to the other with a spiral groove provided in the outer surface thereof, to store a rotary force and a thrust simultaneously.
Inventors
- 👤 Suehiro Takatsu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:36
CPC Classifications
F; F16; F16F; F16F1/00; F16F1/36; F16F1/373; F16F1/376; F16F15/00; F16F15/30; F16F15/315; Y; Y02; Y02E; Y02E60/00; Y02E60/16
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
95 words
An energy storing device comprising an elastic energy storing cylinder of a diameter gradually increasing from one end thereof to the other which has a spiral groove in the outer surface thereof, first and second flanges fitted into both end portions of said cylinder so that they cannot be rotated relative to said cylinder, a spindle passed through said cylinder and said flanges so that it is rotatable and slidable with respect to said first flange but non-rotatable with respect to said second flange, and a gear non-rotatably fitted around one end of said spindle.
Claim 2
Dependent Claim
95 words
An energy storing device comprising an elastic energy storing cylinder of a diameter gradually increasing from one end thereof to the other which has a spiral groove in the outer surface thereof, first and second flanges fitted into both end portions of said cylinder so that they cannot be rotated relative to said cylinder, a spindle passed through said cylinder and said flanges so that it is rotatable and slidable with respect to said first flange but non-rotatable with respect to said second flange, and a gear non-rotatably fitted around one end of said spindle.
Claim 3
Dependent Claim
23 words
An energy storing device according to claim 1, wherein said first and second flanges have the respective boss portions extended along said spindle.
Claim 4
Dependent Claim
22 words
An energy storing device according to claim 1, wherein said gear is in contact with said first flange via a thrust bearing.
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) | 1983-12-02 | 1984-06-02 | 1984-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-02 | 1988-06-02 | 1988-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-02 | 1992-06-02 | 1992-12-02 | $7700.00 | Window Closed / Lapsed |