US3089574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clutch operating mechanism
Assignee: Doosan Bobcat North America Inc
•
Filing: 1960-04-04
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Granted: 1963-05-14
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Expires: 1980-04-04
Abstract
No abstract record available.
Inventors
- 👤 Wayne R Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:48
CPC Classifications
F; F16; F16H; F16H3/00; F16H3/02; F16H3/08; F16H3/14; F16D; F16D13/00; F16D13/22; F16D13/38; F16D13/52; F16D13/54; F16D21/00; F16D21/02; F16H2200/00; F16H2200/003
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
FOR USE IN A TRANSMISSION INCLUDING A DRIVING SHAFT HAVING AN AXIALLY EXTENDING OPENING THEREIN AND A DRIVEN SHAFT SELECTIVELY CONNECTABLE TO THE DRIVING SHAFT BY EITHER OF A PAIR OF CLUTCH ASSEMBLIES, A CLUTCH OPERATING MECHANISM COMPRISING A DRUM SUPPORT MEMBER CONNECTED TO THE DRIVING SHAFT, SAID DRUM SUPPORT MEMBER HAVING A PLURALITY OF RADIAL SLOTS THEREIN, AN ANMULAR DRUM CONNECTED TO SAID DRUM SUPPORT MEMBER FOR SUPPORTING A PORTION OF THE CLUTCH ASSEMBLIES RADIALLY INWARDLY OF SAID DRUM, A PLURALITY OF LEVERS PIVOTALLY CONNECTED TO THE INNER SURFACE OF SAID DRUM AND EXTENDING RADIALLY INWARD IN SAID SLOTS, A PAIR OF SPRING WASHERS LOCATED RESPECTIVELY BETWEEN THE CLUTCH ASSEMBLIES AND SAID LEVERS, A CONTROL ROD SLIDABLY POSITIONED WITH THE AXIALLY EXTENDING OPENING IN THE DRIVING SHAFT, THE DRIVING SHAFT HAVING A PLURALITY OF RADIALLY DISPOSED OPENINGS THROUGH WHICH THE SAID LEVERS EXTEND RESPECTIVELY, AND AN ANNULAR GROOVE
Claim 2
Dependent Claim
149 words
FOR USE IN A TRANSMISSION INCLUDING A DRIVING SHAFT HAVING AN AXIALLY EXTENDING OPENING THEREIN AND A DRIVEN SHAFT SELECTIVELY CONNECTABLE TO THE DRIVING SHAFT BY EITHER OF A PAIR OF CLUTCH ASSEMBLIES, A CLUTCH OPERATING MECHANISM COMPRISING A DRUM SUPPORT MEMBER CONNECTED TO THE DRIVING SHAFT, SAID DRUM SUPPORT MEMBER HAVING A PLURALITY OF RADIAL SLOTS THEREIN, AN ANMULAR DRUM CONNECTED TO SAID DRUM SUPPORT MEMBER FOR SUPPORTING A PORTION OF THE CLUTCH ASSEMBLIES RADIALLY INWARDLY OF SAID DRUM, A PLURALITY OF LEVERS PIVOTALLY CONNECTED TO THE INNER SURFACE OF SAID DRUM AND EXTENDING RADIALLY INWARD IN SAID SLOTS, A PAIR OF SPRING WASHERS LOCATED RESPECTIVELY BETWEEN THE CLUTCH ASSEMBLIES AND SAID LEVERS, A CONTROL ROD SLIDABLY POSITIONED WITH THE AXIALLY EXTENDING OPENING IN THE DRIVING SHAFT, THE DRIVING SHAFT HAVING A PLURALITY OF RADIALLY DISPOSED OPENINGS THROUGH WHICH THE SAID LEVERS EXTEND RESPECTIVELY, AND AN ANNULAR GROOVE
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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) | 1966-05-13 | 1966-11-12 | 1967-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-13 | 1970-11-12 | 1971-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-13 | 1974-11-12 | 1975-05-14 | $7700.00 | Window Closed / Lapsed |