US3851686A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for felling trees
Assignee: Hultdins Verkstads AB
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Filing: 1973-12-14
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Granted: 1974-12-03
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Expires: 1993-12-14
Abstract
Abstract The invention relates to a method of felling trees by separating the roots from the trunk of a tree so that the roots remain substantially in their original position under the ground, by using an apparatus operated from a vehicle and comprising a frame, a machining member having cutting means for cutting of the roots and a counter support member which is pressed down through the ground to engage the roots when the machining member is forced downwardly to cut of the roots.
Inventors
- 👤 G Hultdin
- 👤 O Hultdin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:29
CPC Classifications
A; A01; A01G; A01G23/00; A01G23/02; A01G23/08
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
169 words
A method of felling trees by separating the roots from the trunk of a tree so that said roots remain substantially in their original position under the ground, using an apparatus operated from a vehicle via crane or operating levers and comprising a frame joined to the operating levers, said frame being in the form of a substantially rectangular plate and a machining member having cutting means for cutting off said roots, said machining member being displaceable along the frame by means of forcetransmitting means, the method being characterized by pressing a counter-member journalled in the frame down through the ground in the vicinity of the root section of the tree after the frame has been aligned with the trunk of the tree, so that said countermember will be brought to engage from below in the ground with the root section or parts thereof, and forcing down said cutting means through existing roots to separate these from the trunk of the tree, against the action of said countermember beneath.
Claim 2
Independent Claim
169 words
A method of felling trees by separating the roots from the trunk of a tree so that said roots remain substantially in their original position under the ground, using an apparatus operated from a vehicle via crane or operating levers and comprising a frame joined to the operating levers, said frame being in the form of a substantially rectangular plate and a machining member having cutting means for cutting off said roots, said machining member being displaceable along the frame by means of forcetransmitting means, the method being characterized by pressing a counter-member journalled in the frame down through the ground in the vicinity of the root section of the tree after the frame has been aligned with the trunk of the tree, so that said countermember will be brought to engage from below in the ground with the root section or parts thereof, and forcing down said cutting means through existing roots to separate these from the trunk of the tree, against the action of said countermember beneath.
Claim 3
Independent Claim
163 words
An apparatus for felling trees by separating the roots from the trunk of a tree so that said roots remain substantially in their original position under the ground, said apparatus being operated from a vehicle via crane or operating levers and comprising a frame joined to the operating levers, said frame being in the form of a substantially rectangular plate and a machining member having cutting means for cutting off said roots, said machining member being displaceable along the frame by means of force-transmitting means, characterized in that the apparatus includes a countermember journalled in the frame and arranged to be pressed down through the ground in the vicinity of the root section of the tree after the frame has been aligned with the trunk of the tree, so that said counter-member will be brought to engage from below in the ground with the root section or parts thereof to provide counter forces when said cutting means are forced down through the roots.
Claim 4
Independent Claim
163 words
An apparatus for felling trees by separating the roots from the trunk of a tree so that said roots remain substantially in their original position under the ground, said apparatus being operated from a vehicle via crane or operating levers and comprising a frame joined to the operating levers, said frame being in the form of a substantially rectangular plate and a machining member having cutting means for cutting off said roots, said machining member being displaceable along the frame by means of force-transmitting means, characterized in that the apparatus includes a countermember journalled in the frame and arranged to be pressed down through the ground in the vicinity of the root section of the tree after the frame has been aligned with the trunk of the tree, so that said counter-member will be brought to engage from below in the ground with the root section or parts thereof to provide counter forces when said cutting means are forced down through the roots.
Claim 5
Dependent Claim
59 words
An apparatus according to claim 2, characterized in that said counter-member comprises one or more claw elements pivotably journalled on individual shaft pins projecting from the frame, each claw element comprising at least one claw and being connected to a force-transmitting means attached to the frame to pivot and press the claw or claws in below the root section.
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) | 1977-12-02 | 1978-06-03 | 1978-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-02 | 1982-06-03 | 1982-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-02 | 1986-06-03 | 1986-12-03 | $7700.00 | Window Closed / Lapsed |