US3279172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic drive speed changing and transmitting unit
Assignee: Komatsu Ltd
•
Filing: 1965-03-17
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Granted: 1966-10-18
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Expires: 1985-03-17
Abstract
No abstract record available.
Inventors
- 👤 Kudo Yoshito
- 👤 Futamata Masayuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:24
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/38; F16H61/40; F16H39/00; F16H39/04; F16H61/44; F16H61/456; Y; Y10; Y10S; Y10S60/00; Y10S60/916; Y10T; Y10T74/00; Y10T74/21; Y10T74/2186
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
IN A HYDRAULIC DRIVE SPEED CHANGING AND TRANSMITTING UNIT COMPRISING A PAIR OF HYDRAULIC CIRCUITS EACH INCLUDING A PUMP, A HYDRAULIC MOTOR DRIVEN BY HYDRAULIC FLUID SUPPLIED THERETO FROM SAID PUMP AND CONTROL MEANS FOR CONTROLLING THE HYDRAULIC FLUID FLOW TO SAID HYDRAULIC MOTOR, THE IMPROVEMENT IN WHICH THE CONTROL MEANS OF BOTH SAID HYDRAULIC CIRCUITS ARE ARRANGED WITHIN A UNITARY T-SHAPE BODY HAVING A HEAD PORTION AND A LEG PORTION, SAID HEAD PORTION RIGIDLY SUPPORTING SAID PUMPS AND SAID LEG PORTION RIGIDLY SUPPORTING, ON RESPECTIVE OPPOSITE SIDES THEREOF, SAID HYDRAULIC MOTORS.
Claim 2
Dependent Claim
92 words
IN A HYDRAULIC DRIVE SPEED CHANGING AND TRANSMITTING UNIT COMPRISING A PAIR OF HYDRAULIC CIRCUITS EACH INCLUDING A PUMP, A HYDRAULIC MOTOR DRIVEN BY HYDRAULIC FLUID SUPPLIED THERETO FROM SAID PUMP AND CONTROL MEANS FOR CONTROLLING THE HYDRAULIC FLUID FLOW TO SAID HYDRAULIC MOTOR, THE IMPROVEMENT IN WHICH THE CONTROL MEANS OF BOTH SAID HYDRAULIC CIRCUITS ARE ARRANGED WITHIN A UNITARY T-SHAPE BODY HAVING A HEAD PORTION AND A LEG PORTION, SAID HEAD PORTION RIGIDLY SUPPORTING SAID PUMPS AND SAID LEG PORTION RIGIDLY SUPPORTING, ON RESPECTIVE OPPOSITE SIDES THEREOF, SAID HYDRAULIC MOTORS.
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) | 1969-10-17 | 1970-04-18 | 1970-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-17 | 1974-04-18 | 1974-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-17 | 1978-04-18 | 1978-10-18 | $7700.00 | Window Closed / Lapsed |