US3741526A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Loading and conveying device to be mounted on a tractor or the like
Assignee: Christiania Spigerverk AS
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Filing: 1971-06-01
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Granted: 1973-06-26
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Expires: 1991-06-01
Abstract
Abstract A loading and conveying device for timber logs and the like to be mounted on a motor vehicle. The device comprises an upright mast with a rearwardly directed cantilevered loading beam provided with means for hoisting and carrying the fore end of the load, such as a bundle of timber logs or the like, the rear end of which rests on the ground. The cantilevered beam is at the rear end provided with a transverse yoke member adapted to rest against and partly around the bundle. The winch equipment includes a hoisting strap depending from a point on the cantilevered beam positioned closer to the mast proper. The mast is in its mounting on the tractor body pivotally supported about a horizontal as well as about a vertical axis.
Inventors
- 👤 H Kasin
- 👤 O Thvedt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:27
CPC Classifications
B; B66; B66C; B66C23/00; B66C23/18; B66C23/36; B66C2700/00; B66C2700/03; B66C2700/0321; B66C2700/0357
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
301 words
A system for mounting on a tractor and for loading and conveying long, heavy loads, such as timber logs, said system comprising: a mast having a lower end and an upper end; means for mounting said lower end of said mast on said tractor for horizontal and vertical pivotal movement with respect thereto; a cantilever beam having a forward end and a rearward end, said forward end mounted to said upper end of said mast and said rearward end extending rearwardly thereof; winch means mounted below said upper end of said mast and having cable means for hoisting the forward end of said load, the rearward end of said load resting on the ground; means mounted adjacent said forward end of said cantilever beam for supporting said cable, said cable extending from said winch and then downwardly therefrom; transverse yoke means mounted on said rearward end of said cantilever beam for providing a first contact area between said load and said cantilever beam when said load is hoisted; means attached to the end of said cable means for attachment to said forward end of said load and for causing said load to rigidly contact a second contact area between said load and said cantilever beam when said load is hoisted, said cantilever beam and said load forming a rigid unit when said load is hoisted into contact with said first and second contact areas; means interconnecting said forward end of said cantilever beam and said upper end of said mast for forming a rigid joint therebetween when said load is hoisted and conveyed; and means interconnecting said mast and said means for mounting said mast for allowing vertical pivotal movement of said mast when said mast, said cantilever beam and said load form a rigid unit during conveying of said load.
Claim 2
Independent Claim
301 words
A system for mounting on a tractor and for loading and conveying long, heavy loads, such as timber logs, said system comprising: a mast having a lower end and an upper end; means for mounting said lower end of said mast on said tractor for horizontal and vertical pivotal movement with respect thereto; a cantilever beam having a forward end and a rearward end, said forward end mounted to said upper end of said mast and said rearward end extending rearwardly thereof; winch means mounted below said upper end of said mast and having cable means for hoisting the forward end of said load, the rearward end of said load resting on the ground; means mounted adjacent said forward end of said cantilever beam for supporting said cable, said cable extending from said winch and then downwardly therefrom; transverse yoke means mounted on said rearward end of said cantilever beam for providing a first contact area between said load and said cantilever beam when said load is hoisted; means attached to the end of said cable means for attachment to said forward end of said load and for causing said load to rigidly contact a second contact area between said load and said cantilever beam when said load is hoisted, said cantilever beam and said load forming a rigid unit when said load is hoisted into contact with said first and second contact areas; means interconnecting said forward end of said cantilever beam and said upper end of said mast for forming a rigid joint therebetween when said load is hoisted and conveyed; and means interconnecting said mast and said means for mounting said mast for allowing vertical pivotal movement of said mast when said mast, said cantilever beam and said load form a rigid unit during conveying of said load.
Claim 3
Dependent Claim
16 words
A system as claimed in claim 1, wherein said winch means is mounted on said mast.
Claim 4
Dependent Claim
30 words
A system as claimed in claim 1, wherein said means for forming a rigid joint comprises a bushing fixing said cantilever beam to said mast at a single fixed angle.
Claim 5
Dependent Claim
34 words
A system as claimed in claim 1, wherein said means for forming a rigid joint comprises an adjustable stay having means for selectively pivotally adjusting the angle between said cantilever beam and said mast.
Claim 6
Dependent Claim
30 words
A system as claimed in claim 1, wherein said means for mounting said mast for horizontal movement comprises an annular member supporting said mast and pivotally supportable on said tractor.
Claim 7
Dependent Claim
67 words
A system as claimed in claim 5, wherein said means interconnecting said mast and said means for mounting said mast comprises a fluid cylinder coupled between said lower part of said mast and a peripheral portion of said annular member, said fluid cylinder being selectively adjustable from a free moving position to allow said vertical pivotal movement to a rigid position to prevent said vertical pivotal movement.
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) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |