Patent US4015855A successfully refreshed from Google Patents.
US4015855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Implement hitch
Assignee: Individual
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Filing: 1976-02-27
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Granted: 1977-04-05
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Expires: 1996-02-27
Abstract
Abstract A hitch for connecting an agricultural implement to a tractor including an A-frame secured to the upper side of a transverse draw bar, the draw bar having a plurality of link-engaging brackets at its opposite ends for engaging the lateral lifting links of the tractor, and further having a clevis bracket at its central portion and on the opposite side of the draw bar from the link-engaging brackets for connecting the tongue of an agricultural implement thereto. The hitch further includes a cylinder-supporting plate projecting from a central crossbar of the A-frame to a position over the clevis bracket and supporting on the upper side thereof, a hydraulic cylinder which has its upper end pivotally connected through a suitable bracket to a plate secured to the apex of the A-frame. A piston rod extends from the lower end of the cylinder through the supporting plate provided therefor, and is pivotally connected through a flexible joint to a connecting pin which is positioned to be extended through a pair of vertically aligned apertures in the clevis bracket. On the opposite side of the A-frame crossbar from the cylinder-supporting plate, a pair of central link bracket plates project horizontally from the crossbar and contain a pair of aligned apertures to facilitate connection of the central adjusting link of the three hitching elements of a tractor to the hitch.
Inventors
- 👤 Clarence R. Murray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:23
CPC Classifications
B; B60; B60D; B60D1/00; B60D1/01; B60D1/02; B60D1/025; B60D1/24; B60D1/36
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
203 words
An implement hitch for connecting an agricultural tractor to an agricultural implement comprising: an A-frame having a top and a bottom and including a pair of convergent side frame members interconnected by a central crossbar and having spaced lower ends; a horizontally extending draw bar extending between and interconnecting the lower ends of the side frame members of the A-frame, and having a front side and a rear side; link-engaging bracket pairs on the opposite ends of said draw bar and on the front side thereof, the brackets in each bracket pair defining a space for receiving therebetween the lateral lift links of an agricultural tractor; a clevis bracket projecting from the rear side of said draw bar at the center thereof and including two vertically spaced apertured plates; means on said central crossbar for connecting a central adjusting link of a tractor to said central crossbar; power cylinder supporting means on said A-frame above said clevis bracket for supporting a power cylinder above said clevis bracket on said A-frame; a piston rod extensible from said power cylinder and projecting downwardly therefrom; and pin means connected to said piston rod and aligned with the apertures in said vertically spaced plates for extension therethrough.
Claim 2
Dependent Claim
203 words
An implement hitch for connecting an agricultural tractor to an agricultural implement comprising: an A-frame having a top and a bottom and including a pair of convergent side frame members interconnected by a central crossbar and having spaced lower ends; a horizontally extending draw bar extending between and interconnecting the lower ends of the side frame members of the A-frame, and having a front side and a rear side; link-engaging bracket pairs on the opposite ends of said draw bar and on the front side thereof, the brackets in each bracket pair defining a space for receiving therebetween the lateral lift links of an agricultural tractor; a clevis bracket projecting from the rear side of said draw bar at the center thereof and including two vertically spaced apertured plates; means on said central crossbar for connecting a central adjusting link of a tractor to said central crossbar; power cylinder supporting means on said A-frame above said clevis bracket for supporting a power cylinder above said clevis bracket on said A-frame; a piston rod extensible from said power cylinder and projecting downwardly therefrom; and pin means connected to said piston rod and aligned with the apertures in said vertically spaced plates for extension therethrough.
Claim 3
Dependent Claim
59 words
The implement hitch defined in claim 1 wherein said power cylinder supporting means on said A-frame above said clevis bracket comprises a cylinder bracket welded to the converged upper ends of said side frame members projecting from said A-frame in vertical alignment above said clevis bracket, said cylinder bracket being pivotally connected to one end of said power cylinder.
Claim 4
Dependent Claim
40 words
An implement hitch as defined in claim 2 wherein said power cylinder supporting means is further characterized in including a cylinder supporting plate projecting from a central portion of said crossbar over said clevis bracket and under said cylinder bracket.
Claim 5
Dependent Claim
39 words
An implement hitch as defined in claim 1 wherein said pin means includes: a pin extensible through the apertures in said vertically spaced plates of said clevis bracket; and a flexible coupling interconnecting said pin and said piston rod.
Claim 6
Dependent Claim
39 words
An implement hitch as defined in claim 4 wherein said pin means includes: a pin extensible through the apertures in said vertically spaced plates of said clevis bracket; and a flexible coupling interconnecting said pin and said piston rod.
Claim 7
Dependent Claim
230 words
An implement hitch for connecting implements to a farm tractor comprising: an A-frame having a top, a bottom, a forward side and a rear side, said A-frame including a pair of convergent side frame members interconnected by a central crossbar, and having spaced lower ends and intersecting upper ends; a horizontally extending draw bar extending between, and interconnecting, the lower ends of the side frame members of the A-frame and having a front side and a rear side; means on said draw bar for securing the lateral lift links of an agricultural tractor to the opposite ends of said draw bar; means on said central crossbar for connecting a central adjusting link of a tractor to said central crossbar; a cylinder supporting plate projecting to the rear side of said A-frame from said crossbar; a cylinder bracket welded to the converged upper ends of said side frame members and positioned above said cylinder supporting plate; a hydraulic cylinder supported on said cylinder supporting plate and having an end pivotally connected to said cylinder bracket; a piston rod projecting downwardly from said hydraulic cylinder; a clevis bracket secured to the rear side of said draw bar at a location below said cylinder supporting plate; and pin means connected to said piston rod for movement therewith and cooperating with said clevis bracket for engaging and disengaging the tongue of an agricultural implement.
Claim 8
Dependent Claim
230 words
An implement hitch for connecting implements to a farm tractor comprising: an A-frame having a top, a bottom, a forward side and a rear side, said A-frame including a pair of convergent side frame members interconnected by a central crossbar, and having spaced lower ends and intersecting upper ends; a horizontally extending draw bar extending between, and interconnecting, the lower ends of the side frame members of the A-frame and having a front side and a rear side; means on said draw bar for securing the lateral lift links of an agricultural tractor to the opposite ends of said draw bar; means on said central crossbar for connecting a central adjusting link of a tractor to said central crossbar; a cylinder supporting plate projecting to the rear side of said A-frame from said crossbar; a cylinder bracket welded to the converged upper ends of said side frame members and positioned above said cylinder supporting plate; a hydraulic cylinder supported on said cylinder supporting plate and having an end pivotally connected to said cylinder bracket; a piston rod projecting downwardly from said hydraulic cylinder; a clevis bracket secured to the rear side of said draw bar at a location below said cylinder supporting plate; and pin means connected to said piston rod for movement therewith and cooperating with said clevis bracket for engaging and disengaging the tongue of an agricultural implement.
Claim 9
Dependent Claim
47 words
An implement hitch as defined in claim 6 wherein said means on said central crossbar for connecting a central adjusting link of a tractor to said central crossbar comprises a pair of spaced connection brackets secured to the crossbar and having a pair of aligned apertures therethrough.
Claim 10
Dependent Claim
47 words
An implement hitch as defined in claim 7 wherein said lateral lift link securing means comprises link-engaging bracket pairs on the opposite ends of said draw bar and facing the forward side of said A-frame for connection of the lateral links of a tractor to said A-frame.
Claim 11
Dependent Claim
39 words
An implement hitch as defined in claim 8 wherein said pin means comprises: a pin extensible through the apertures in said vertically spaced plates of said clevis bracket; and a flexible coupling interconnecting said pin and said piston rod.
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) | 1980-04-04 | 1980-10-04 | 1981-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-04 | 1984-10-04 | 1985-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-04 | 1988-10-04 | 1989-04-05 | $7700.00 | Window Closed / Lapsed |