US4151868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shear assembly having primary and secondary members
Assignee: Caterpillar Inc
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Filing: 1976-11-29
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Granted: 1979-05-01
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Expires: 1996-11-29
Abstract
Abstract A shear assembly has frame means to which a first member is pivotally mounted. A second member comprising a blade is pivotally mounted to the first member, with the first and second members being positionable on opposite sides of the body of a tree. Extension of a cylinder interconnecting the second member and frame means provides a scissoring action of the first and second members to provide shearing of the tree. Means are included for providing that upon withdrawal of the second member from the body of the tree, the first member is also withdrawn therefrom.
Inventors
- 👤 Robert L. Fischer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:12
CPC Classifications
A; A01; A01G; A01G23/00; A01G23/02; A01G23/08; A01G23/087; A01G23/089; Y; Y10; Y10T; Y10T83/00; Y10T83/869; Y10T83/8798; Y10T83/8802; Y10T83/929; Y10T83/9372; Y10T83/9396; Y10T83/9401
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
114 words
Apparatus for cutting the body of a tree comprising: frame means; a first member pivotally mounted to the frame means; a second member pivotally mounted directly to the first member; one of said first and second members comprising blade means; the body of a tree being positionable generally between the first and second members; and means for moving one of said first and second members into the body of a tree to provide movement of the other of the first and second members into the body of a tree, wherein said means for moving one of said first and second members into the body of a tree is pivotally mounted to said second member.
Claim 2
Dependent Claim
114 words
Apparatus for cutting the body of a tree comprising: frame means; a first member pivotally mounted to the frame means; a second member pivotally mounted directly to the first member; one of said first and second members comprising blade means; the body of a tree being positionable generally between the first and second members; and means for moving one of said first and second members into the body of a tree to provide movement of the other of the first and second members into the body of a tree, wherein said means for moving one of said first and second members into the body of a tree is pivotally mounted to said second member.
Claim 3
Dependent Claim
30 words
The apparatus of claim 1 and further comprising resilient spring means interconnecting the first member and frame means for biasing the first member away from a body of a tree.
Claim 4
Dependent Claim
22 words
The apparatus of claim 2 wherein the second member comprises a blade member, and wherein the first member comprises an anvil member.
Claim 5
Dependent Claim
28 words
The apparatus of claim 1 wherein the means for moving one of said first and second members comprise cylinder means pivotally connecting the frame means and second member.
Claim 6
Dependent Claim
17 words
The apparatus of claim 1 wherein the first and second members comprise first and second blade means.
Claim 7
Dependent Claim
112 words
Apparatus for cutting the body of a tree comprising: frame means; a first member pivotally mounted to the frame means; a second member pivotally mounted directly to the first member; one of said first and second members comprising blade means; the body of a tree being positionable generally between the first and second members; and means for moving one of said first and second members into the body of a tree to provide movement of the other of the first and second members into the body of a tree, wherein the means for moving one of said first and second members comprise cylinder means pivotally connecting the frame means and second member.
Claim 8
Dependent Claim
112 words
Apparatus for cutting the body of a tree comprising: frame means; a first member pivotally mounted to the frame means; a second member pivotally mounted directly to the first member; one of said first and second members comprising blade means; the body of a tree being positionable generally between the first and second members; and means for moving one of said first and second members into the body of a tree to provide movement of the other of the first and second members into the body of a tree, wherein the means for moving one of said first and second members comprise cylinder means pivotally connecting the frame means and second member.
Claim 9
Dependent Claim
196 words
Apparatus for cutting the body of a tree comprising: frame means; a first member pivotally mounted to the frame means; a second member pivotally mounted directly to the first member; one of said first and second members comprising blade means; the body of a tree being positionable generally between the first and second members; and means for moving one of said first and second members into the body of a tree to provide movement of the other of the first and second members into the body of a tree, wherein the means for moving one of said first and second members pivotally connects the frame means and second member, and further comprising a body secured relative to the frame means, and positioned to be contacted by the second member upon sufficient actuation of the means for moving one of said first and second members to withdraw the second member from the body of a tree, whereby further such actuation of the means for moving one of said first and second members provides that the second member is pivoted relative to the frame means to provide withdrawal of the first member from the body of a tree.
Claim 10
Dependent Claim
196 words
Apparatus for cutting the body of a tree comprising: frame means; a first member pivotally mounted to the frame means; a second member pivotally mounted directly to the first member; one of said first and second members comprising blade means; the body of a tree being positionable generally between the first and second members; and means for moving one of said first and second members into the body of a tree to provide movement of the other of the first and second members into the body of a tree, wherein the means for moving one of said first and second members pivotally connects the frame means and second member, and further comprising a body secured relative to the frame means, and positioned to be contacted by the second member upon sufficient actuation of the means for moving one of said first and second members to withdraw the second member from the body of a tree, whereby further such actuation of the means for moving one of said first and second members provides that the second member is pivoted relative to the frame means to provide withdrawal of the first member from the body of a tree.
Claim 11
Dependent Claim
17 words
The apparatus of claim 7 wherein the body secured relative to the frame means comprise roller means.
Claim 12
Dependent Claim
17 words
The apparatus of claim 8 wherein the first and second members comprise first and second blade means.
References Cited (Backward Citations)
US2366909A
Cited
US3946776A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-04-30 | 1982-10-30 | 1983-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-30 | 1986-10-30 | 1987-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-30 | 1990-10-30 | 1991-05-01 | $7700.00 | Window Closed / Lapsed |