US3720248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for felling trees
Assignee: Kockum Soderhamn AB
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Filing: 1971-01-21
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Granted: 1973-03-13
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Expires: 1991-01-21
Abstract
Abstract An apparatus for felling trees has an elongated beam carrying a saw-blade, a means for moving the beam back and forth with respect to the tree, and a counter-piece adapted to be moved to compress a tree trunk between it and the saw-blade.
Inventors
- 👤 P Mellgren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:05
CPC Classifications
B; B27; B27B; B27B11/00; B27B11/12; A; A01; A01G; A01G23/00; A01G23/02; A01G23/08; A01G23/087; A01G23/089
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
121 words
An apparatus for felling tress comprising a. a frame carried by a vehicle movable over a logging area; b. a sturdy, elongated beam supported on the frame and movable relative to said vehicle in a direction towards and from a tree to be felled; c. means for moving the beam; d. a sturdy saw-blade carried by said beam at one end thereof; e. a counter-piece carried by the beam disposed in opposed relationship with the saw-blade; f. means for moving said saw-blade and said counter-piece towards each other whereby a tree may be pressed therebetween; said saw-blade carrying large teeth and being capable of cutting through a tree trunk by a few back and forth movements of the beam and saw-blade.
Claim 2
Independent Claim
121 words
An apparatus for felling tress comprising a. a frame carried by a vehicle movable over a logging area; b. a sturdy, elongated beam supported on the frame and movable relative to said vehicle in a direction towards and from a tree to be felled; c. means for moving the beam; d. a sturdy saw-blade carried by said beam at one end thereof; e. a counter-piece carried by the beam disposed in opposed relationship with the saw-blade; f. means for moving said saw-blade and said counter-piece towards each other whereby a tree may be pressed therebetween; said saw-blade carrying large teeth and being capable of cutting through a tree trunk by a few back and forth movements of the beam and saw-blade.
Claim 3
Independent Claim
121 words
An apparatus for felling tress comprising a. a frame carried by a vehicle movable over a logging area; b. a sturdy, elongated beam supported on the frame and movable relative to said vehicle in a direction towards and from a tree to be felled; c. means for moving the beam; d. a sturdy saw-blade carried by said beam at one end thereof; e. a counter-piece carried by the beam disposed in opposed relationship with the saw-blade; f. means for moving said saw-blade and said counter-piece towards each other whereby a tree may be pressed therebetween; said saw-blade carrying large teeth and being capable of cutting through a tree trunk by a few back and forth movements of the beam and saw-blade.
Claim 4
Independent Claim
121 words
An apparatus for felling tress comprising a. a frame carried by a vehicle movable over a logging area; b. a sturdy, elongated beam supported on the frame and movable relative to said vehicle in a direction towards and from a tree to be felled; c. means for moving the beam; d. a sturdy saw-blade carried by said beam at one end thereof; e. a counter-piece carried by the beam disposed in opposed relationship with the saw-blade; f. means for moving said saw-blade and said counter-piece towards each other whereby a tree may be pressed therebetween; said saw-blade carrying large teeth and being capable of cutting through a tree trunk by a few back and forth movements of the beam and saw-blade.
Claim 5
Dependent Claim
12 words
The apparatus of claim 1, in which said counter-piece is a saw-blade.
Claim 6
Dependent Claim
21 words
The apparatus of claim 1, in which said driving means comprises a hydraulic motor connected between the saw-blade and the counter-piece.
Claim 7
Dependent Claim
21 words
The apparatus of claim 1, in which said saw-blade is swingably mounted relative to said beam about a substantially vertical axis.
Claim 8
Dependent Claim
21 words
The apparatus of claim 1, in which said counterpiece is swingably mounted relative to said beam about a substantially vertical axis.
Claim 9
Dependent Claim
36 words
The apparatus of claim 1, in which the saw-blade or the counter-piece is provided on a carrier turnably mounted to the beam about an axis substantially parallel to the direction of length of the saw blade.
Claim 10
Dependent Claim
23 words
The apparatus of claim 1, comprising a supporting device for preventing the tree from falling sidewise before the tree has been cut off.
Claim 11
Dependent Claim
50 words
The apparatus of claim 7, in which the supporting device consists of a member provided with spikes or the like directed towards the tree, said member being mounted to the beam and being movable substantially in the direction of length of the beam against the action of a spring Force.
Claim 12
Dependent Claim
43 words
The apparatus of claim 1, in which the frame of the apparatus is turnably mounted on a cross-country vehicle about a vertical axis so that the beam can be set in any desired direction relatively to the direction of length of the vehicle.
Claim 13
Dependent Claim
42 words
The apparatus of claim 1, in which the saw-blade is carried from the beam at its one end and is provided at its other end with a stop member for preventing the saw-blade from being entirely drawn out from the saw groove.
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) | 1976-03-12 | 1976-09-11 | 1977-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-12 | 1980-09-11 | 1981-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-12 | 1984-09-11 | 1985-03-13 | $7700.00 | Window Closed / Lapsed |