Patent US3352394A successfully refreshed from Google Patents.
US3352394A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clutches with control valve
Assignee: Allis Chalmers Corp
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Filing: 1965-08-02
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Granted: 1967-11-14
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Expires: 1985-08-02
Abstract
No abstract record available.
Inventors
- 👤 Donald W Longshore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:06
CPC Classifications
F; F16; F16D; F16D48/00; F16D48/02; F16D48/0206; F15; F15B; F15B13/00; F15B13/02; F15B13/06; F16H; F16H59/00; F16H59/02; F16H59/04; F16H59/045; F16K; F16K11/00; F16K11/02; F16K11/06; F16K11/065; F16K11/07; F16K11/0716; F16D2048/0209; F16D2048/0221; F16D2048/0224; F16D2500/00; F16D2500/50; F16D2500/502; F16D2500/50239; F16D2500/51; F16D2500/5118
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
206 words
IN COMBINATION A CONTROL VALUE ASSEMBLY COMPRISING AN ELONGATED BODY HAVING A LONGITUDINAL EXTENDING BORE THEREIN, INLET AND OUTLET PORTS IN SAID BODY WHICH COMMUNICATE WITH SAID BORE, AN ACTUATING ROD SLIDABLY DISPOSED IN SAID BORE, SAID ROD INCLUDING A SPOOL SLIDABLY MOUNTED THEREIN AND ACTUABLE BETWEEN THREE POSITIONS, A NEUTRAL POSITION, A FIRST CLUTCH ACTUATING POSITION, AND A SECOND CLUTCH ACTUATING POSITION, A PAIR OF SPRINGS MOUNTED ABOUT SAID ROD AND SPACED APART BY SAID INNER SPOOL, PISTON MEMBERS SLIDABLY MOUNTED ON SAID ROD IN ABUTTING RELATION TO THE OUTER END OF SAID SPRINGS, MEANS ADJACENT THE ENDS OF SAID ROD FOR RETAINING SAID POSITIONS IN ABUTING RELATION TO SAID SPRINGS, ONE OF SAID OUTLET PORTS BEING LOCATED ABOUT SAID INNER SPOOL WHEN SAID SPOOL IS POSITIONED IN SAID NEUTRAL POSITION, SAID PISTONS AND SAID SPOOL BEING OF THE SAME DIAMETER AS SAID BORE, SAID INLET HAVING A BRANCH PASSAGE EXTENDING TO A PORT ABOUT ONE OF SAID INLET, A SECOND OTHER OF SAID PISTONS BEING LOCATED IN SAID INLET, A SECOND OUTLET PORT CONNECTED TO SAID BORE IN SPACED RELATION TO SAID FIRST OUTLET, A THIRD OUTLET PORT CONNECTED TO SAID BORE IN SPACED RELATION TO SAID FIRST OUTLET AND ON THE OUTLET SIDE
Claim 2
Dependent Claim
206 words
IN COMBINATION A CONTROL VALUE ASSEMBLY COMPRISING AN ELONGATED BODY HAVING A LONGITUDINAL EXTENDING BORE THEREIN, INLET AND OUTLET PORTS IN SAID BODY WHICH COMMUNICATE WITH SAID BORE, AN ACTUATING ROD SLIDABLY DISPOSED IN SAID BORE, SAID ROD INCLUDING A SPOOL SLIDABLY MOUNTED THEREIN AND ACTUABLE BETWEEN THREE POSITIONS, A NEUTRAL POSITION, A FIRST CLUTCH ACTUATING POSITION, AND A SECOND CLUTCH ACTUATING POSITION, A PAIR OF SPRINGS MOUNTED ABOUT SAID ROD AND SPACED APART BY SAID INNER SPOOL, PISTON MEMBERS SLIDABLY MOUNTED ON SAID ROD IN ABUTTING RELATION TO THE OUTER END OF SAID SPRINGS, MEANS ADJACENT THE ENDS OF SAID ROD FOR RETAINING SAID POSITIONS IN ABUTING RELATION TO SAID SPRINGS, ONE OF SAID OUTLET PORTS BEING LOCATED ABOUT SAID INNER SPOOL WHEN SAID SPOOL IS POSITIONED IN SAID NEUTRAL POSITION, SAID PISTONS AND SAID SPOOL BEING OF THE SAME DIAMETER AS SAID BORE, SAID INLET HAVING A BRANCH PASSAGE EXTENDING TO A PORT ABOUT ONE OF SAID INLET, A SECOND OTHER OF SAID PISTONS BEING LOCATED IN SAID INLET, A SECOND OUTLET PORT CONNECTED TO SAID BORE IN SPACED RELATION TO SAID FIRST OUTLET, A THIRD OUTLET PORT CONNECTED TO SAID BORE IN SPACED RELATION TO SAID FIRST OUTLET AND ON THE OUTLET SIDE
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) | 1970-11-13 | 1971-05-15 | 1971-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-13 | 1975-05-15 | 1975-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-13 | 1979-05-15 | 1979-11-14 | $7700.00 | Window Closed / Lapsed |