US3726326A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tree felling machine
Assignee: Individual
•
Filing: 1971-12-06
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Granted: 1973-04-10
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Expires: 1991-12-06
Abstract
Abstract A tractor mounted tree felling machine having a pair of hydraulically actuated chain saws with the inner saw slidably mounted on a frame and the outer saw pivotally mounted on a frame to cut the tree from opposite sides thereof. The frame is adjustable in height and rotatable about a longitudinal axis for cutting trees at an angle. A pusher is mounted on the tractor and hydraulically actuated for pushing the tree over as it is being cut in a direction away from the tractor.
Inventors
- 👤 T Coleman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:15
CPC Classifications
B; B27; B27B; B27B17/00; B27B17/0091; A; A01; A01G; A01G23/00; A01G23/02; A01G23/08; A01G23/091; B23; B23D; B23D57/00; B23D57/02; B23D57/026; B27B17/12
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
194 words
A tree felling machine adapted for mounting on a tractor comprising a transverse frame, a pair of links pivotally secured to said frame at one end and to said tractor at the opposite end, a hydraulic piston secured at one end to said tractor and at the other end to one of said links to swing said transverse frame upwardly with respect to said tractor, an upright frame member secured to said transverse frame member, a hydraulic cylinder connected at one end to said tractor and having its opposite end connected to said upright frame member for tilting said transverse frame member with respect to said tractor, a longitudinal frame member having one end secured to one end of said transverse frame member by a longitudinally extending pivot, means on said transverse frame member for pivoting said longitudinal frame member about said longitudinal pivot, a chain saw mounted for sliding movement on said longitudinal frame member, a second chain saw mounted for swinging movement on said longitudinal frame member, and means on said longitudinal frame member for sliding said first named chain saw and pivoting said second named chain saw for felling a tree.
Claim 2
Dependent Claim
194 words
A tree felling machine adapted for mounting on a tractor comprising a transverse frame, a pair of links pivotally secured to said frame at one end and to said tractor at the opposite end, a hydraulic piston secured at one end to said tractor and at the other end to one of said links to swing said transverse frame upwardly with respect to said tractor, an upright frame member secured to said transverse frame member, a hydraulic cylinder connected at one end to said tractor and having its opposite end connected to said upright frame member for tilting said transverse frame member with respect to said tractor, a longitudinal frame member having one end secured to one end of said transverse frame member by a longitudinally extending pivot, means on said transverse frame member for pivoting said longitudinal frame member about said longitudinal pivot, a chain saw mounted for sliding movement on said longitudinal frame member, a second chain saw mounted for swinging movement on said longitudinal frame member, and means on said longitudinal frame member for sliding said first named chain saw and pivoting said second named chain saw for felling a tree.
Claim 3
Dependent Claim
32 words
A device as claimed in claim 1 wherein said chain saws are hydraulic motor actuated and the means for pivoting said longitudinal frame member on its longitudinal pivot includes a hydraulic piston.
Claim 4
Dependent Claim
30 words
A device as claimed in claim 2 including a housing for said sliding chain saw on said transverse frame member for protecting said sliding chain saw when not in use.
Claim 5
Dependent Claim
30 words
A device as claimed in claim 3 including a housing secured to said longitudinal frame member for housing said pivoting chain saw at one end of the pivotal movement thereof.
Claim 6
Dependent Claim
35 words
A device as claimed in claim 4 including a pusher mounted on said tractor and adapted for engagement with the tree to be felled and including a hydraulic cylinder for applying pressure to said pusher.
Claim 7
Dependent Claim
16 words
A device as claimed in claim 5 including automatic lubricating oilers mounted on said chain saws.
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) | 1976-04-09 | 1976-10-09 | 1977-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-09 | 1980-10-09 | 1981-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-09 | 1984-10-09 | 1985-04-10 | $7700.00 | Window Closed / Lapsed |