US3099098A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crawler trencher with tiltable body
Assignee: Individual
•
Filing: 1961-11-20
•
Granted: 1963-07-30
•
Expires: 1981-11-20
Abstract
No abstract record available.
Inventors
- 👤 Charles J Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:13
CPC Classifications
B; B60; B60P; B60P1/00; B60P1/04; B60P1/045; E; E02; E02F; E02F3/00; E02F3/04; E02F3/08; E02F3/10; E02F3/28; E02F3/30; E02F3/32; E02F3/96; E02F3/963; E02F3/964; E02F5/00; E02F5/02; E02F5/14; E02F5/145; E02F9/00; E02F9/02; E02F9/028
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
165 words
TRENCHER MECHANISM INCLUDING A CHASSIS, A GENERALLY FORE AND AFT EXTENDING BOOM, A TRENCHER SUPPORTED ON SAID BOOM, TRACTION MECHANISM ON SAID CHASSIS FOR PROPELLING THE SAME, A BODY SUPPORTED ON SAID CHASSIS FOR TILTING MOVEMENT ABOUT A FORE AND AFT EXTENDING HORIZONTAL AXIS, MEANS ON THE BODY SUPPORTING THE BOOM FOR UP AND DOWN MOVEMENT ABOUT A TRANSVERSELY EXTENDING HORIZONTAL AXIS, PISTON AND CYLINDER MEANS FOR TILTING SAID BODY AND BOOM ON SAID CHASSIS ABOUT SAID FORE AND AFT AXIS, PISTON AND CYLINDER MEANS FOR PIVOTING SAID BOOM ABOUT SAID TRANSVERSELY EXTENDING HORIZONTAL AXIS, DRIVE MEANS COMPRISING A MOTIVE FLUID PUMP ON SAID BODY, FLUID CONTROLLING VALVES IN THE OUTPUT OF SAID PUMP, DRIVEN MEANS COMPRISING A TRACTION MOTOR ON SAID CHASSIS FOR OPERATING SAID TRACTION MECHANISM, AND FLEXIBLE SUPPLY AND RETURN HOSES CONNECTED BETWEEN SAID VALVES IN THE OUTPUT OF THE PUMP AND SAID TRACTION MOTOR FOR PROVIDING FLOW OF SAID FLUID UNINTERRUPTED BY TILTING ACTION OF SAID BODY AND BOOM AS AFORESAID.
Claim 2
Dependent Claim
165 words
TRENCHER MECHANISM INCLUDING A CHASSIS, A GENERALLY FORE AND AFT EXTENDING BOOM, A TRENCHER SUPPORTED ON SAID BOOM, TRACTION MECHANISM ON SAID CHASSIS FOR PROPELLING THE SAME, A BODY SUPPORTED ON SAID CHASSIS FOR TILTING MOVEMENT ABOUT A FORE AND AFT EXTENDING HORIZONTAL AXIS, MEANS ON THE BODY SUPPORTING THE BOOM FOR UP AND DOWN MOVEMENT ABOUT A TRANSVERSELY EXTENDING HORIZONTAL AXIS, PISTON AND CYLINDER MEANS FOR TILTING SAID BODY AND BOOM ON SAID CHASSIS ABOUT SAID FORE AND AFT AXIS, PISTON AND CYLINDER MEANS FOR PIVOTING SAID BOOM ABOUT SAID TRANSVERSELY EXTENDING HORIZONTAL AXIS, DRIVE MEANS COMPRISING A MOTIVE FLUID PUMP ON SAID BODY, FLUID CONTROLLING VALVES IN THE OUTPUT OF SAID PUMP, DRIVEN MEANS COMPRISING A TRACTION MOTOR ON SAID CHASSIS FOR OPERATING SAID TRACTION MECHANISM, AND FLEXIBLE SUPPLY AND RETURN HOSES CONNECTED BETWEEN SAID VALVES IN THE OUTPUT OF THE PUMP AND SAID TRACTION MOTOR FOR PROVIDING FLOW OF SAID FLUID UNINTERRUPTED BY TILTING ACTION OF SAID BODY AND BOOM AS AFORESAID.
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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) | 1966-07-29 | 1967-01-28 | 1967-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-29 | 1971-01-28 | 1971-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-29 | 1975-01-28 | 1975-07-30 | $7700.00 | Window Closed / Lapsed |