US3265145A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Walking equipment for dragline excavators and the like
Assignee: Caterpillar Global Mining LLC
•
Filing: 1964-08-20
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Granted: 1966-08-09
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Expires: 1984-08-20
Abstract
No abstract record available.
Inventors
- 👤 Horace C Beitzel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:52
CPC Classifications
B; B62; B62D; B62D57/00; E; E02; E02F; E02F9/00; E02F9/02; E02F9/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
121 words
IN WALKING EQUIPMENT FOR DRAGLINE EXCAVATORS AND THE LIKE, THE COMBINATION COMPRISING: A HORIZONTAL, ROTATABLE DRIVE SHAFT TRANSVERSE TO THE DESIRED LINE OF MOVEMENT OF THE MACHINE TO BE WALKED; A GENERALLY CIRCULAR DRIVE DISC ECCENTRICALLY MOUNTED ON AND ROTATABLE WITH THE SHAFT WITH ITS AXIS GENERALLY PARALLEL TO THE AXIS OF THE SHAFT; A WALKING FRAME DEFINING A GENERALLY CIRCULAR BEARING WHICH ROTATABLY RECEIVES THE DISC WITH A RELATIVELY CLOSE FIT, SAID FRAME INCLUDING A LOWER PORTION BELOW THE DISC WHICH IS CONNECTED TO THE REMAINDER OF THE FRAME BY A HINGE CONNECTION WHICH ALLOWS THE LOWER PORTION TO PIVOT IN A PLANE GENERALLY PARALLEL TO THE AXIS OF THE SHAFT; AN ELONGATED WALKING SHOE THAT IS SLIDABLY CONNECTED TO
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) | 1969-08-08 | 1970-02-07 | 1970-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-08 | 1974-02-07 | 1974-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-08 | 1978-02-07 | 1978-08-09 | $7700.00 | Window Closed / Lapsed |