US3747651A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-propelling vehicle with tree-felling shears
Assignee: CNH Industrial Baumaschinen GmbH
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Filing: 1972-04-17
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Granted: 1973-07-24
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Expires: 1992-04-17
Abstract
Abstract A self-propelled vehicle in which the front portion that is pivotable about a vertical axis relative to the rear portion of the vehicle carries tree felling shears with the cutting edge of the cutting blade extending substantially at a right angle to the driving direction of the vehicle. The housing for the felling shears supports a connecting assembly which pivotally supports a thrust member that is hydraulically pivotable in a plane extending in the longitudinal direction of the vehicle for exerting a pre-load on the tree to be felled.
Inventors
- 👤 H Bangert
- 👤 W Arenz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:10
CPC Classifications
A; A01; A01G; A01G23/00; A01G23/02; A01G23/08; A01G23/087
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
194 words
A self-propelled vehicle having a rear portion and a front portion Pivotable about a vertical axis relative to said rear portion for steering said vehicle, housing means supported by said front portion, tree felling shear means arranged in said housing means and having a cutting blade pivotably mounted in said housing means and provided with a cutting edge extending substantially at a right angle with regard to the driving direction of said vehicle, mounting means connected to said housing means, connecting link means linked to said mounting means, thrust means having one end portion pivotally connected to said connecting means for pivoting about an axis substantially transverse to the longitudinal axis of the vehicle and being operable selectively to exert a pre-loading pressure upon the tree to be felled, supporting means mounted on said front portion, supporting arm means having one end portion linked to said supporting means and having the other end portion normally fixedly but detachably connected to said connecting link means, and means including fluid operable cylinder-piston means supported by said front portion and linked to said thrust means for selectively pivoting the same in the longitudinal direction of the vehicle.
Claim 2
Dependent Claim
194 words
A self-propelled vehicle having a rear portion and a front portion Pivotable about a vertical axis relative to said rear portion for steering said vehicle, housing means supported by said front portion, tree felling shear means arranged in said housing means and having a cutting blade pivotably mounted in said housing means and provided with a cutting edge extending substantially at a right angle with regard to the driving direction of said vehicle, mounting means connected to said housing means, connecting link means linked to said mounting means, thrust means having one end portion pivotally connected to said connecting means for pivoting about an axis substantially transverse to the longitudinal axis of the vehicle and being operable selectively to exert a pre-loading pressure upon the tree to be felled, supporting means mounted on said front portion, supporting arm means having one end portion linked to said supporting means and having the other end portion normally fixedly but detachably connected to said connecting link means, and means including fluid operable cylinder-piston means supported by said front portion and linked to said thrust means for selectively pivoting the same in the longitudinal direction of the vehicle.
Claim 3
Dependent Claim
46 words
A vehicle according to claim 1, in which said means supported by said front portion and linked to said thrust means include rocker arm means linked to said supporting arm means and also include connecting rod means connecting said rocker arm means to said thrust means.
Claim 4
Dependent Claim
36 words
A vehicle according to claim 1, which includes abutment means connected to said housing means and extending in a direction transverse to the driving direction of the vehicle for abutment against the tree to be felled.
Claim 5
Dependent Claim
26 words
A vehicle according to claim 1, which includes chaim means connected to that end portion of said thrust means which is remote from said connecting means.
Claim 6
Dependent Claim
56 words
A vehicle according to claim 1, in which said housing means with said shear means is pivotable about a horizontal axis, and which includes spindle means for pivoting said housing means about said horizontal axis to move said shear means into a plane substantially perpendicular to the longitudinal axis of the tree trunk to be felled.
Claim 7
Dependent Claim
54 words
A vehicle according to claim 1, which includes a receiving member having an obtused angled cutout for receiving the felled tree trunk, and holding down means connected to and protruding downwardly from said thrust means at an angle thereto for pressing against a tree trunk in said receiving member and holding said trunk therein.
References Cited (Backward Citations)
US3230988A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-23 | 1977-01-22 | 1977-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-23 | 1981-01-22 | 1981-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-23 | 1985-01-22 | 1985-07-24 | $7700.00 | Window Closed / Lapsed |