Patent US3566716A successfully refreshed from Google Patents.
US3566716A
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Clutch cylinder circuit and charging valve therefor
Assignee: International Motors LLC
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Filing: 1969-07-22
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Granted: 1971-03-02
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Expires: 1989-07-22
Abstract
Abstract HYDRAULIC MECHANISM IN A TRANSMISSION FOR ENGAGING A CLUTCH FOR FORWARD OR REVERSE BEFORE A CLUTCH FOR FIRST, SECOND OR THIRD SPEED. FLOW OF PRESSURE FLUID TO THE LATTER CLUTCH IS BY WAY OF A QUICK-FILL SPOOL HAVING A LARGE ORIFICE, A RATE-OF-RISE SPOOL, AND A POPPET THEREIN HAVING A SMALL ORIFICE. A RESTRICTED ORIFICE OF APPRECIABLE LENGTH IS USED IN CONNECTION WITH THE SPOOLS AND THE POPPET IN SUCH A WAY THAT, AFTER THE POWER UNIT FOR THE CLUTCH FOR FIRST, SECOND OR THIRD SPEED IS FILLED WITH FLUID, PRESSURE OF THE FLUID IN THE POWER UNIT IS SLOWLY RAISED TO ITS MAXIMUM.
Inventors
- 👤 Probir K Chatterjea
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:01
CPC Classifications
F; F16; F16D; F16D48/00; F16D48/02; F16D48/0206; F16H; F16H61/00; F16H61/02; F16H61/0262; F16D2048/0209; F16D2048/0221; F16D2048/0224; F16H2708/00; F16H2708/02; F16H2708/06; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2564; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/19377; Y10T74/19414; Y10T74/19419; Y10T74/19423; Y10T74/19428; Y10T74/19433
Claims Analysis
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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) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |