US3814152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stump pulling and crushing device
Assignee: Individual
•
Filing: 1972-09-22
•
Granted: 1974-06-04
•
Expires: 1992-09-22
Abstract
Abstract Apparatus for the combined removal and crushing of tree stumps which is adapted to be attached to the jib of a work machine, said apparatus including a downwardly extending hook for stump removal, rearwardly extending arms for supporting the removed stump, the arms being spaced apart to provide a gap between and a rotatable cutting blade aligned with the gap and arranged to split the supported stump.
Inventors
- 👤 K Pallari
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:25
CPC Classifications
A; A01; A01G; A01G23/00; A01G23/02; A01G23/06; A01G23/067
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
103 words
A stump pulling and crushing device for attachment to the jib of a work machine provided with a hydraulic piston cylinder device comprising a downwardly extending hook for stump removal, a pair of rearwardly extending arms for supporting the removed stump, said arms being spaced apart to provide a gap therebetween, a main cutting blade rotatably mounted on the jib and connected with the hydraulic piston cylinder device, said blade being substantially aligned with said gap for movement toward the supported stump for splitting the stump, and each of said arms being provided with a counter-cutting blade for cooperation with said main blade.
Claim 2
Dependent Claim
103 words
A stump pulling and crushing device for attachment to the jib of a work machine provided with a hydraulic piston cylinder device comprising a downwardly extending hook for stump removal, a pair of rearwardly extending arms for supporting the removed stump, said arms being spaced apart to provide a gap therebetween, a main cutting blade rotatably mounted on the jib and connected with the hydraulic piston cylinder device, said blade being substantially aligned with said gap for movement toward the supported stump for splitting the stump, and each of said arms being provided with a counter-cutting blade for cooperation with said main blade.
Claim 3
Dependent Claim
50 words
A device as set forth in claim 1 wherein the main cutting blade is provided with a lever arm, an axle carried by the jib for ratatably supporting the lever arm at one end thereof and means connecting the other end of the lever with the hydraulic piston cylinder device.
Claim 4
Dependent Claim
26 words
A device as set forth in claim 2 wherein the rearwardly extending arms are rigidly connected together and are provided with extensions secured to the jib.
Claim 5
Dependent Claim
26 words
A device as set forth in claim 1 wherein the upper portion of the main cutting blade is provided with an extension having laterally extending wings.
Claim 6
Dependent Claim
33 words
A device as set forth in claim 1 which includes a counterblade carried by said arms for cooperating with said main cutting blade to prevent a stump from becoming wedged in said gap.
References Cited (Backward Citations)
US23895A
Cited
US2966180A
Cited
SU138110A1
Cited
US3482614A
Cited
US3626477A
Cited
US3710834A
Cited
US3719314A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-03 | 1977-12-03 | 1978-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-03 | 1981-12-03 | 1982-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-03 | 1985-12-03 | 1986-06-04 | $7700.00 | Window Closed / Lapsed |