US4005779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tightline logging system
Assignee: Individual
•
Filing: 1975-02-18
•
Granted: 1977-02-01
•
Expires: 1995-02-18
Abstract
Abstract A carriage carrying a match block moves away from a slider by gravity along a tightline from a mast of the slider, and is pulled back to the slider with a turn of logs by a mobile mainline unit of a skidder. The tightline then is lower the carriage, and the mainline may be freed from the block to permit the mainline unit to move the logs to a loading station or the turn of logs may be detached from the mainline and the operation repeated.
Inventors
- 👤 Cecil L. Andrews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:10
CPC Classifications
B; B66; B66C; B66C21/00; B66C21/04
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
148 words
In a tightline logging system, comprising a vehicle slider, a vertical mast mounted on the vehicle slider, a mast sheave on the upper end of the mast, a tightline winch on the vehicle slider, a tightline extending from the winch and over the sheave and outwardly and downwardly to a ground anchor, a carriage on the tightline movable outwardly from the mast by gravity, an open block carried by the carriage, a skidder vehicle having means for detachably coupling said vehicle slider to said skidder vehicle, a mainline winch mounted on the skidder, and a mainline extending through the block from the mainline winch and adapted to be secured to a load and pull the carriage and the load toward the mast, the open block permitting the mainline to be removed laterally therefrom to permit the skidder to haul the load to a position remote from the slider.
Claim 2
Dependent Claim
148 words
In a tightline logging system, comprising a vehicle slider, a vertical mast mounted on the vehicle slider, a mast sheave on the upper end of the mast, a tightline winch on the vehicle slider, a tightline extending from the winch and over the sheave and outwardly and downwardly to a ground anchor, a carriage on the tightline movable outwardly from the mast by gravity, an open block carried by the carriage, a skidder vehicle having means for detachably coupling said vehicle slider to said skidder vehicle, a mainline winch mounted on the skidder, and a mainline extending through the block from the mainline winch and adapted to be secured to a load and pull the carriage and the load toward the mast, the open block permitting the mainline to be removed laterally therefrom to permit the skidder to haul the load to a position remote from the slider.
Claim 3
Dependent Claim
24 words
The tightline logging system of claim 1 including a selectively operable brake on the carriage for holding the carriage against movement toward the mast.
Claim 4
Dependent Claim
46 words
The tightline logging system of claim 1 wherein the block normally holds the cable against lateral insertion and removal into and out of the block during use and has an open side permitting lateral insertion and removal of the cable into and out of the block.
Claim 5
Dependent Claim
19 words
The tightline logging system of claim 1 including a power source on the slider for driving the tightline winch.
Claim 6
Dependent Claim
16 words
The tightline logging system of claim 4 including remote control means for operating the tightline winch.
Claim 7
Dependent Claim
19 words
The tightline logging system of claim 5 wherein the remote control means also includes means controlling the mainline winch.
Claim 8
Dependent Claim
37 words
The tightline logging system of claim 6 wherein the remote control means includes control means at the working area of a choker setter to permit the choker setter to operate the mainline winch and the tightline winch.
Claim 9
Dependent Claim
116 words
In a tightline logging system, comprising a mast, a tightline winch, power means for driving the tightline winch, a slider vehicle carrying the mast, the tightline winch and the power means, a tightline extending from the tightline winch and the mast to an anchor, a carriage movable along the tightline, open block means carried by the carriage, a mainline having an outer end portion extending through the open block means, and said open block means permits said mainline to be laterally removed therefrom, a powered mainline winch connected to one end of the mainline, and a separate mobile unit supporting the mainline winch and having means for detachably coupling said slider vehicle to said mobile unit.
Claim 10
Dependent Claim
116 words
In a tightline logging system, comprising a mast, a tightline winch, power means for driving the tightline winch, a slider vehicle carrying the mast, the tightline winch and the power means, a tightline extending from the tightline winch and the mast to an anchor, a carriage movable along the tightline, open block means carried by the carriage, a mainline having an outer end portion extending through the open block means, and said open block means permits said mainline to be laterally removed therefrom, a powered mainline winch connected to one end of the mainline, and a separate mobile unit supporting the mainline winch and having means for detachably coupling said slider vehicle to said mobile unit.
Claim 11
Dependent Claim
14 words
The tightline logging system of claim 8 wherein the mobile unit is a skidder.
Claim 12
Dependent Claim
20 words
The tightline logging system of claim 8 including remote control means for operating the tightline winch and the mainline winch.
Claim 13
Dependent Claim
16 words
The tightline logging system of claim 8 including remote control means for operating the tightline winch.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-02-01 | 1980-08-02 | 1981-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-01 | 1984-08-02 | 1985-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-01 | 1988-08-02 | 1989-02-01 | $7700.00 | Window Closed / Lapsed |