US3229391A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic blade control for a road grader with a blade simulator mounted in a ball and socket connection
Assignee: Caterpillar Inc
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Filing: 1964-03-11
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Granted: 1966-01-18
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Expires: 1984-03-11
Abstract
No abstract record available.
Inventors
- 👤 William W Breitbarth
- 👤 John W Carter
- 👤 Philip J Costa
- 👤 Jerre F Lauterbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:07
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/76; E02F3/7636; E02F3/765; E02F3/80; E02F3/84; E02F3/844; E02F3/845
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
139 words
A MOTOR GRADER BLADE CONTROL SYSTEM FOR A MOTOR GRADER HAVING A MAIN FRAME TERMINATING IN A BOLSTER, A BLADE, BLADE SUPPORT STRUCTURE INCLUDING A DRAWBAR TERMINATING IN A BALL WHICH COOPERATES WITH A SOCKET IN THE BOLSTER TO FORM AN ARTICULATED CONNECTION THEREBETWEEN, HYDRAULIC LIFT JACKS OPERATIVELY CONNECTED BETWEEN THE BLADE AND MAIN FRAME TO POSITION THE BLADE AND ITS SUPPORT STRUCTURE, AND MEANS FOR ADJUSTING THE ANGLE OF THE BLADE WITH RESPECT TO A PLANE TRANSVERSE TO THE MAIN FRAME, COMPRISING IN COMBINATION; A BLADE POSITION SIMULATOR DISPOSED WITHIN THE DRAWBAR BALL AND ATTACHED THERETO IN A MANNER WHEREBY BLADE SLOPE INFORMATION IS TRANSMITTED THERETO BY THE DRAWBAR ITSELF; MEANS PROVIDING A SIGNAL INDICATING TRUE VERTICAL; ACTUAL BLADE SLOPE INDICATOR MEANS OPERATIVELY CONNECTED TO SAID VERTICAL REFERENCE MEANS AND SAID BLADE POSITION SIMULATOR, AND OPERATIVE TO PROVIDE
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) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |