Patent US3733647A successfully refreshed from Google Patents.
Patent US4470211A successfully refreshed from Google Patents.
US4470211A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thrust coupling for a vehicle
Assignee: ROSSMAN RESEARCH Inc PHOENIX AZ A CORP OF
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Filing: 1982-12-13
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Granted: 1984-09-11
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Expires: 2002-12-13
Abstract
Abstract The thrust coupling has a thrust frame which can be readily coupled to the underside of a vehicle. The thrust frame is pivotally mounted on a hitching device on the rear of the vehicle and is suspended at the front of the vehicle via chains. In addition, an adjustable guide rod is provided to effect centering of the thrust frame at the front of the vehicle. The thrust frame can be raised and lowered at the front end of the vehicle via the chains and can be laterally centered via the guide rod. Vertical motion of the thrust frame at the front end can be effected from the driver's seat.
Inventors
- 👤 Michael Rossmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:51
CPC Classifications
E; E01; E01H; E01H5/00; E01H5/04; E01H5/06; E01H5/063; B; B60; B60D; B60D3/00; B62; B62D; B62D49/00; B62D49/06; B62D49/065; E01H1/00; E01H1/02; E02; E02F; E02F3/00; E02F3/04; E02F3/627
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
119 words
A thrust coupling for a vehicle having a support frame and a hitching device at a rear of the support frame, said coupling comprising a thrust frame for disposition under the support frame of the vehicle; means at a rear end of said thrust frame for suspending said thrust frame from the hitching device of the vehicle; and means at a front end of said thrust frame for movably securing said thrust frame to the vehicle support frame, said latter means including a cable line for attachment to the vehicle support frame and a transverse guide rod secured at one end to said thrust frame and adapted to be secured at an opposite end to the vehicle support frame.
Claim 2
Dependent Claim
119 words
A thrust coupling for a vehicle having a support frame and a hitching device at a rear of the support frame, said coupling comprising a thrust frame for disposition under the support frame of the vehicle; means at a rear end of said thrust frame for suspending said thrust frame from the hitching device of the vehicle; and means at a front end of said thrust frame for movably securing said thrust frame to the vehicle support frame, said latter means including a cable line for attachment to the vehicle support frame and a transverse guide rod secured at one end to said thrust frame and adapted to be secured at an opposite end to the vehicle support frame.
Claim 3
Dependent Claim
54 words
A thrust coupling as set forth in claim 1 wherein said thrust frame includes a forward frame part and a rear frame part pivotally secured to said forward frame part to move between a folded together storage position with said forward frame part and an extended position in parallel with said forward frame part.
Claim 4
Dependent Claim
56 words
A thrust coupling as set forth in claim 2 wherein each frame part includes a pair of longitudinally disposed stringers disposed in overlapping relation with said pair of stringers of the other frame part and a plurality of cross bolts passing through said stringers in said extended position to secure said frame parts in rigid relation.
Claim 5
Dependent Claim
43 words
A thrust coupling as set forth in claim 3 wherein at least some of said stringers have a plurality of longitudinally disposed bores for receiving said bolts, said bores being disposed to permit longitudinally adjustment of said frame parts relative to each other.
Claim 6
Dependent Claim
47 words
A thrust coupling as set forth in claim 1 wherein said means at said rear end of said thrust frame includes a pivotally mounted arm for movement between a vertical position and a horizontal position and a counter-piece mounted on said arm for engaging the hitching device.
Claim 7
Dependent Claim
17 words
A thrust coupling as set forth in claim 5 wherein said counterpiece is adjustable along said arm.
Claim 8
Dependent Claim
16 words
A thrust coupling as set forth in claim 1 wherein said guide rod is longitudinally adjustable.
Claim 9
Dependent Claim
29 words
A thrust coupling as set forth in claim 1 wherein said thrust frame includes adjustable end stops for abutting against the vehicle support frame in a fully raised position.
Claim 10
Dependent Claim
37 words
A thrust coupling as set forth in claim 1 wherein said means at said front end includes actuating means connected to said chain line for raising and lowering said thrust frame relative to the vehicle support frame.
Claim 11
Dependent Claim
16 words
A thrust coupling as set forth in claim 9 wherein said actuating means is hydraulically operated.
Claim 12
Dependent Claim
40 words
A thrust coupling as set forth in claim 9 which further comprises a spring attached to said cable line, a threaded spindle secured to said spring and rotatably mounted in said thrust frame for a crank for rotating said spindle.
Claim 13
Dependent Claim
39 words
A thrust coupling as set forth in claim 5 wherein said means at said rear end includes a shaft having said arm slidably mounted thereon and a spring within said shaft for biasing said arm in a longitudinal direction.
Claim 14
Dependent Claim
29 words
A thrust coupling as set forth in claim 12 wherein said means at said rear end further includes a shock absorber disposed to limit an extension of said spring.
Claim 15
Dependent Claim
25 words
A thrust coupling as set forth in claim 12 which further includes an adjusting means for adjusting said spring to vary the spring force thereof.
Claim 16
Dependent Claim
32 words
A thrust coupling as set forth in claim 12 wherein said arm includes a sleeve slidably mounted on said shaft and which further comprises rollers rollably mounting said sleeve on said shaft.
Claim 17
Dependent Claim
124 words
In combination with a vehicle having a support frame and a hitching device at a rear of said support frame, a thrust coupling for mounting a front working element at a front end of said vehicle, said thrust coupling comprising a thrust frame disposed under said support frame; means at a rear end of said thrust frame for suspending said thrust frame from said hitching device; and means at a front end of said thrust frame for movably securing said thrust frame to said support frame, said latter means including at least one cable line suspending said thrust frame from said support frame and a transverse guide rod secured at one end to said thrust frame at an opposite end to said support frame.
Claim 18
Dependent Claim
124 words
In combination with a vehicle having a support frame and a hitching device at a rear of said support frame, a thrust coupling for mounting a front working element at a front end of said vehicle, said thrust coupling comprising a thrust frame disposed under said support frame; means at a rear end of said thrust frame for suspending said thrust frame from said hitching device; and means at a front end of said thrust frame for movably securing said thrust frame to said support frame, said latter means including at least one cable line suspending said thrust frame from said support frame and a transverse guide rod secured at one end to said thrust frame at an opposite end to said support frame.
Claim 19
Dependent Claim
35 words
The combination as set forth in claim 16 wherein said means at said front end includes actuating means connected to said chain line for raising and lowering said thrust frame relative to said support frame.
Claim 20
Dependent Claim
17 words
The combination as set forth in claim 17 which further comprises means for tensioning said cable line.
Claim 21
Dependent Claim
49 words
The combination as set forth in claim 16 wherein said means at said rear end of said thrust frame includes a shaft, an arm slidably mounted on said shaft and extending transversely of said shaft, and a counter-piece adjustably mounted along said arm and engaging with said hitching device.
Claim 22
Dependent Claim
24 words
The combination as set forth in claim 16 which further comprises a snow plow blade mounted on said front end of said thrust frame.
References Cited (Backward Citations)
US2163279A
Cited
US2606417A
Cited
US2635891A
Cited
US2752747A
Cited
US3215448A
Cited
US3588145A
Cited
US3688847A
Cited
US3851894A
Cited
US4273352A
Cited
US4342163A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-09-11 | 1988-03-12 | 1988-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-11 | 1992-03-12 | 1992-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-11 | 1996-03-12 | 1996-09-11 | $7700.00 | Window Closed / Lapsed |