US3238648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bulldozer with adjustable stinger bit
Assignee: Caterpillar Inc
•
Filing: 1963-12-23
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Granted: 1966-03-08
•
Expires: 1983-12-23
Abstract
No abstract record available.
Inventors
- 👤 Delwin E Cobb
- 👤 Lloyd K Heinold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:59
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/76; E02F3/7609; E02F3/7618; E02F3/80; E02F3/815; E02F3/8152; E02F3/8155
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
IN A BULLDOZER HAVING A BLADE, SAID BLADE HAVING TO TRANSVERSELY SPACED AND ALIGNED CUTTING EDGES SECURED FORWARDLY OF THE LOWER EDGE OF THE BLADE ADJACENT ITS ENDS, A THIRD CUTTING EDGE IN THE SPACE BETWEEN THE FIRST CUTTING EDGES, AND MEANS SUPPORTING THE THIRD CUTTING EDGE FOR MOVEMENT BETWEEN A POSITION SUBSTANTIALLY ALIGNED WITH THE FIRST CUTTING EDGES SO AS TO DEFINE A SCRAPER AND A LOWER POSITION FOR USE AS A STINGER BIT.
Claim 2
Dependent Claim
75 words
IN A BULLDOZER HAVING A BLADE, SAID BLADE HAVING TO TRANSVERSELY SPACED AND ALIGNED CUTTING EDGES SECURED FORWARDLY OF THE LOWER EDGE OF THE BLADE ADJACENT ITS ENDS, A THIRD CUTTING EDGE IN THE SPACE BETWEEN THE FIRST CUTTING EDGES, AND MEANS SUPPORTING THE THIRD CUTTING EDGE FOR MOVEMENT BETWEEN A POSITION SUBSTANTIALLY ALIGNED WITH THE FIRST CUTTING EDGES SO AS TO DEFINE A SCRAPER AND A LOWER POSITION FOR USE AS A STINGER BIT.
References Cited (Backward Citations)
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Cited
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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) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |