US3240308A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control system for hydrodynamic device
Assignee: Doosan Bobcat North America Inc
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Filing: 1963-12-30
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Granted: 1966-03-15
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Expires: 1983-12-30
Abstract
No abstract record available.
Inventors
- 👤 Barry L Frost
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:54
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/14; F16H45/00; F16H45/02; F16H2045/0273; F16H2045/0284
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
174 words
FOR USE WITH A HYDRODYNAMIC DEVICE HAVING A DRIVING MEMBER, A DRIVEN MEMBER AND A CLUTCH FOR LOCKING THE DRIVING AND DRIVEN MEMBERS TOGETHER, A FLUID RESERVOIR AND A SOURCE OF PRESSURE FLUID CONNECTED TO THE RESERVOIR TO DRAW FLUID THEREFROM, A CONTROL MEMBER COMPRISING A BODY CONNECTED TO THE DRIVEN MEMBER FOR ROTATION THEREWITH, A FIRST VALVE CARRIED BY THE SAID BODY AND CONNECTED TO THE PRESSURE FLUID SOURCE, A SECOND VALVE CARRIED BY THE SAID BODY AND CONNECTED TO THE LOCK-UP CLUTCH, AND FLUID PASSAGE MEANS CONNECTING THE SAID VALVES, THE SAID FIRST VALVE BEING ACTUABLE BY CENTRIFUGAL FORCE FROM A FIRST POSITION IN WHICH IT CONNECTS THE SAID FLUID PASSAGE MEANS TO THE PRESSURE FLUID SOURCE TO A SECOND POSITION IN WHICH IT CONNECTS THE SAID PASSAGE MEANS TO THE RESERVOIR THE SAID SECOND VALVE BEING ACTUATABLE BY CENTRIFUGAL FORCE FROM A FIRST POSITION IN WHICH IT CONNECTS THE LOCK-UP CLUTCH TO THE RESERVOIR TO A SECOND POSITION IN WHICH IT CONNECTS THE LOCK-UP CLUTCH TO THE SAID FLUID PASSAGE MEANS.
Claim 2
Dependent Claim
174 words
FOR USE WITH A HYDRODYNAMIC DEVICE HAVING A DRIVING MEMBER, A DRIVEN MEMBER AND A CLUTCH FOR LOCKING THE DRIVING AND DRIVEN MEMBERS TOGETHER, A FLUID RESERVOIR AND A SOURCE OF PRESSURE FLUID CONNECTED TO THE RESERVOIR TO DRAW FLUID THEREFROM, A CONTROL MEMBER COMPRISING A BODY CONNECTED TO THE DRIVEN MEMBER FOR ROTATION THEREWITH, A FIRST VALVE CARRIED BY THE SAID BODY AND CONNECTED TO THE PRESSURE FLUID SOURCE, A SECOND VALVE CARRIED BY THE SAID BODY AND CONNECTED TO THE LOCK-UP CLUTCH, AND FLUID PASSAGE MEANS CONNECTING THE SAID VALVES, THE SAID FIRST VALVE BEING ACTUABLE BY CENTRIFUGAL FORCE FROM A FIRST POSITION IN WHICH IT CONNECTS THE SAID FLUID PASSAGE MEANS TO THE PRESSURE FLUID SOURCE TO A SECOND POSITION IN WHICH IT CONNECTS THE SAID PASSAGE MEANS TO THE RESERVOIR THE SAID SECOND VALVE BEING ACTUATABLE BY CENTRIFUGAL FORCE FROM A FIRST POSITION IN WHICH IT CONNECTS THE LOCK-UP CLUTCH TO THE RESERVOIR TO A SECOND POSITION IN WHICH IT CONNECTS THE LOCK-UP CLUTCH TO THE SAID FLUID PASSAGE MEANS.
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) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |