US4422656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for manual rotation of motor vehicle driving wheels through propeller shaft and differential
Assignee: HARLAN MATERIAL HANDLING Corp A CORP OF KS
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Filing: 1982-05-10
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Granted: 1983-12-27
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Expires: 2002-05-10
Abstract
Abstract Apparatus for advancing or reversing motor vehicles, such as tractors to be coupled with trailers, through use of a hand crank, transmits power from a belt and pulley assembly to the vehicle propeller shaft, and therefore, to the drive wheels through the differential and wheel axle. Axially aligned, housing-supported input and output spindles are interposed between such assembly and the crank, the spring-loaded input spindle being shiftable by operation of the crank to a position where it operably connects with the output spindle.
Inventors
- 👤 James H. Kaplan
- 👤 Joel S. Lissauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:03
CPC Classifications
B; B60; B60K; B60K6/00; Y; Y10; Y10S; Y10S903/00; Y10S903/902
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
228 words
Apparatus for facilitating the hitching of a towable vehicle to a towing vehicle behind the latter upon manual rotation of the drive wheels of the towing vehicle through its propeller shaft and differential by a single operator standing on the ground behind the towing vehicle, said apparatus comprising: a support adapted for connection to the chassis of said vehicle; an input spindle rotatably carried by said support; an ouput spindle rotatably carried by said support in axial alignment with the input spindle; means for transmitting power from said output spindle to said shaft, the input spindle being shiftable along its axis of rotation relative to the support toward and away from the output spindle; resilient means yieldably biasing the input spindle away from the output spindle; means for interconnecting the spindles when the input spindle is shifted toward the output spindle against the action of said resilient means whereby, upon rotation of the input spindle to rotate the output spindle, the shaft is rotated through said power transmitting means; and a manually operable crank extending rearwardly from said towing vehicle to a point accessible to said operator and having means of connection with the input spindle for rotating the latter, said interconnecting means being releasable to prevent rotation of the input shaft and crank while the propeller shaft is being rotated during normal operation of the towing vehicle.
Claim 2
Dependent Claim
228 words
Apparatus for facilitating the hitching of a towable vehicle to a towing vehicle behind the latter upon manual rotation of the drive wheels of the towing vehicle through its propeller shaft and differential by a single operator standing on the ground behind the towing vehicle, said apparatus comprising: a support adapted for connection to the chassis of said vehicle; an input spindle rotatably carried by said support; an ouput spindle rotatably carried by said support in axial alignment with the input spindle; means for transmitting power from said output spindle to said shaft, the input spindle being shiftable along its axis of rotation relative to the support toward and away from the output spindle; resilient means yieldably biasing the input spindle away from the output spindle; means for interconnecting the spindles when the input spindle is shifted toward the output spindle against the action of said resilient means whereby, upon rotation of the input spindle to rotate the output spindle, the shaft is rotated through said power transmitting means; and a manually operable crank extending rearwardly from said towing vehicle to a point accessible to said operator and having means of connection with the input spindle for rotating the latter, said interconnecting means being releasable to prevent rotation of the input shaft and crank while the propeller shaft is being rotated during normal operation of the towing vehicle.
Claim 3
Dependent Claim
28 words
The invention of claim 1, said means of connection being a releasable, transversely polygonal plug and socket coupling in mating relationship when the plug is within the socket.
Claim 4
Dependent Claim
26 words
The invention of claim 1, said interconnecting means being a transversely polygonal plug and socket coupling in mating relationship when the plug is within the socket.
Claim 5
Dependent Claim
60 words
The invention of claim 1, said power transmitting means being a first pulley secured to the output spindle, a second pulley secured to said shaft and a continuous belt trained over the pulleys, the second pulley having a diameter larger than the diameter of the first pulley for providing a power advantage to said operator during operation of said crank.
Claim 6
Dependent Claim
46 words
The invention of claim 4, said support being a housing having the output spindle rotatably mounted therein, said output spindle extending outwardly beyond one end of the housing and having said first pulley secured thereto exteriorly of the housing adjacent said one end of the latter.
Claim 7
Dependent Claim
43 words
The invention of claim 5, a flange on the output spindle within the housing; a pair of spaced bearings in the housing for the output spindle each having an inner race; and means clamping the races between the first pulley and said flange.
Claim 8
Dependent Claim
48 words
The invention of claim 6, said housing having a wall opposite to said one end thereof, the input spindle extending through the wall and having a shoulder engageable with the wall for limiting the extent of outward movement of the input spindle under influence of said resilient means.
Claim 9
Dependent Claim
32 words
The invention of claim 5, said input spindle having a stop exteriorly of the housing, said resilient means being a spring coiled on the input spindle between said wall and said stop.
Claim 10
Dependent Claim
18 words
The invention of claim 8, said shoulder being disposed to abut the flange when the spindles are interconnected.
References Cited (Backward Citations)
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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) | 1986-12-26 | 1987-06-27 | 1987-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-12-26 | 1991-06-27 | 1991-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-12-26 | 1995-06-27 | 1995-12-27 | $7700.00 | Window Closed / Lapsed |