US4046274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power assist hitch for a hay transport
Assignee: Individual
•
Filing: 1976-10-12
•
Granted: 1977-09-06
•
Expires: 1996-10-12
Abstract
Abstract A hay transport having a bed mounted upon an axle, the bed being pivotable about the axle. A frame extends forwardly from the axle, and a tilt cylinder is affixed between the frame and the bed. A support structure has an inner sleeve affixed thereto. An outer sleeve slides over the inner sleeve, and a horizontal hitch cylinder is disposed within the inner sleeve. The hitch cylinder is affixed between the frame and the support structure, and the outer sleeve slides upon the inner sleeve as the hitch cylinder is operated. The support structure bears control mechanisms and is affixed to a prime mover. Actuation of the hitch cylinder causes the hay transport to be moved away from the primer mover.
Inventors
- 👤 Kenneth E. Libersky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:19
CPC Classifications
A; A01; A01D; A01D87/00; A01D87/12; A01D87/121; B; B60; B60P; B60P1/00; B60P1/04
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
173 words
A power assist hitch for use with a tractor and a transport for loading and moving stacks, the transport having a bed pivotable by a tilt cylinder, said hitch comprising: support means including a main support, the tractor being detachably hitched to said main support; cylinder means including an external shaft, an internal shaft and a hitch cylinder, said internal shaft being affixed to said main support, said external shaft being attached to the transport, said internal shaft being slidably received within said external shaft, said hitch cylinder being attached at one end to said main support, at the other end to said transport, and disposed within said internal and external shafts; and control means for selectively actuating said cylinder means and the tilt cylinder, said control means including first means for locking said shafts against relative movement and second means for selectively operating said hitch cylinder and the tilt cylinder, said control means being attached to said main support and having couplings to the tractor, the tilt cylinder and said cylinder means.
Claim 2
Dependent Claim
173 words
A power assist hitch for use with a tractor and a transport for loading and moving stacks, the transport having a bed pivotable by a tilt cylinder, said hitch comprising: support means including a main support, the tractor being detachably hitched to said main support; cylinder means including an external shaft, an internal shaft and a hitch cylinder, said internal shaft being affixed to said main support, said external shaft being attached to the transport, said internal shaft being slidably received within said external shaft, said hitch cylinder being attached at one end to said main support, at the other end to said transport, and disposed within said internal and external shafts; and control means for selectively actuating said cylinder means and the tilt cylinder, said control means including first means for locking said shafts against relative movement and second means for selectively operating said hitch cylinder and the tilt cylinder, said control means being attached to said main support and having couplings to the tractor, the tilt cylinder and said cylinder means.
Claim 3
Dependent Claim
42 words
A power assist hitch as defined in claim 1 and further wherein said support means includes an articulated support, said articulated support being attached between said main support and said external shaft, said articulated support bearing said coupling to the tilt cylinder.
Claim 4
Dependent Claim
79 words
A power assist hitch as defined in claim 1 and further wherein said external shaft includes a plurality of external projections, said first means including latches and a control arm, said latches being pivotally affixed to said main support, said control arm being affixed to said latches, movement of said control arm imparting movement to said latches, said external projections being engageable by said latches whereby said external shaft is locked against movement with respect to said internal shaft.
Claim 5
Dependent Claim
83 words
A power assist hitch as defined in claim 3 and further wherein said second means includes a valve means for switching between said hitch cylinder and the tilt cylinder, said valve means being mounted upon said main support and having extending therefrom a control rod, said control arm having a control plate affixed thereto, said control plate engaging said control rod and moving said control rod when said control arm is moved, said valve means being switched by movement of said control rod.
References Cited (Backward Citations)
US3244434A
Cited
US3415400A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-09-05 | 1981-03-07 | 1981-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-05 | 1985-03-07 | 1985-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-05 | 1989-03-07 | 1989-09-06 | $7700.00 | Window Closed / Lapsed |