Patent US3557849A successfully refreshed from Google Patents.
US3557849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tree harvester
Assignee: Amca International Ltd
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Filing: 1969-12-11
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Granted: 1971-01-26
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Expires: 1989-12-11
Abstract
Abstract A tree-harvesting machine of the articulated vehicle type is equipped with a mechanism for advancing logs from the forward to the rearward vehicle unit and for automatically aligning the logs lengthwise with the rear vehicle unit when the units are in a relatively angled condition, as for steering.
Inventors
- 👤 Edwin O Martinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:29
CPC Classifications
A; A01; A01G; A01G23/00; A01G23/02; A01G23/08; A01G23/083; A01G23/085
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
136 words
In a tree-harvesting apparatus, the combination of wheeled, pivotally interconnected front and rear vehicle frames; treeprocessing means mounted on said front frame and including log transfer means operable to advance a horizontally positioned log lengthwise in the longitudinal direction of said front frame toward said rear frame; and a log-straightening device comprising relatively opposed guide members mounted on said rear frame for horizontal transverse reciprocating movement relative to each other and in horizontally straddling relation to a log advanced rearwardly by said transfer means; and actual actuating means for said guide members selectively operable to widen and shorten the space therebetween; whereby said rearwardly advanced log am may be accommodated between said guide members and turned into lengthwise longitudinal alignment with said rear frame while the latter is out of longitudinal alignment with said front frame.
Claim 2
Dependent Claim
136 words
In a tree-harvesting apparatus, the combination of wheeled, pivotally interconnected front and rear vehicle frames; treeprocessing means mounted on said front frame and including log transfer means operable to advance a horizontally positioned log lengthwise in the longitudinal direction of said front frame toward said rear frame; and a log-straightening device comprising relatively opposed guide members mounted on said rear frame for horizontal transverse reciprocating movement relative to each other and in horizontally straddling relation to a log advanced rearwardly by said transfer means; and actual actuating means for said guide members selectively operable to widen and shorten the space therebetween; whereby said rearwardly advanced log am may be accommodated between said guide members and turned into lengthwise longitudinal alignment with said rear frame while the latter is out of longitudinal alignment with said front frame.
Claim 3
Dependent Claim
100 words
A tree-harvesting apparatus as set forth in claim 1, wherein said log-straightening device comprises a forward and a rearward log-engaging element mounted on said rear frame for horizontal swinging movement on a first common axis, another forward and another rearward log-engaging element mounted on said rear frame for horizontal swinging movement on a second common axis spaced transversely from said first axis, and actuating means for said forward and reaRward log-engaging elements operable selectively to either swing said forward log-engaging elements and said rearward log-engaging elements synchronously apart, or to swing said forward and said rearward log-engaging elements synchronously together.
Claim 4
Dependent Claim
23 words
A tree-harvesting apparatus as set forth in claim 2 wherein power driven log-feeding rollers are mounted on one pair of said log-engaging elements.
Claim 5
Dependent Claim
103 words
In a tree-harvesting apparatus, the combination of wheeled front and rear vehicle units connected for horizontal angular adjustment into and out of longitudinal alignment with each other; tree-processing means mounted on said front vehicle unit including log transfer means successively operable to direct logs from an upstanding position rearwardly into a generally horizontal position lengthwise of said front unit; and log-straightening means mounted on said rear unit and operable to move said horizontal logs into lengthwise longitudinal alignment with said rear unit irrespective of whether said front and rear units are angularly adjusted horizontally into or out of longitudinal alignment with each other.
Claim 6
Dependent Claim
103 words
In a tree-harvesting apparatus, the combination of wheeled front and rear vehicle units connected for horizontal angular adjustment into and out of longitudinal alignment with each other; tree-processing means mounted on said front vehicle unit including log transfer means successively operable to direct logs from an upstanding position rearwardly into a generally horizontal position lengthwise of said front unit; and log-straightening means mounted on said rear unit and operable to move said horizontal logs into lengthwise longitudinal alignment with said rear unit irrespective of whether said front and rear units are angularly adjusted horizontally into or out of longitudinal alignment with each other.
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) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |