Patent US3750759A successfully refreshed from Google Patents.
US3750759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hitch construction
Assignee: Individual
•
Filing: 1971-09-15
•
Granted: 1973-08-07
•
Expires: 1991-09-15
Abstract
Abstract A multi-bottom trailing plow is attached to the draw bar of a tractor. The hitch assembly of the plow includes a pair of vertical rods which are connected between a hitch plate fastened to the tractor draw bar and the plow frame. An expansion cylinder drives the frame relative to the hitch plate to adjust the vertical separation of the frame from the hitch plate and ground level. This arrangement also controls the depth which the plow bottoms penetrate the soil. A lever arm linkage extends from one of the vertical rods and to a tail wheel of the plow to provide for desired turning operation of the tail wheel of the plow. The hydraulic system for the expansion cylinder is controlled from the tractor. Thus, the position of the plow frame can be accurately and completely controlled to provide a level working depth by the plow bottoms.
Inventors
- 👤 C Geurts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:08
CPC Classifications
A; A01; A01B; A01B59/00
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
162 words
In an implement having means for attachment of said implement to implement transport means and frame means including a tool mounting member, the improvement of hitch construction comprising: means for connecting said frame means to said means for attachment, said means for connecting including first means secured to the frame means, second means connected to the means for attachment, upright guide means attached to one of said first and second means, and mounted on the other of said first and second means being mounted for movement in an upright direction on the upright guide means whereby the first and second means can selectively move toward and away from each other, power means mounted on one of said first and second means and connected to the other of said first and second means for vertically displacing and positioning said first means with respect to said second means whereby the elevation of said frame means relative to the means for attachment can be adjusted.
Claim 2
Dependent Claim
162 words
In an implement having means for attachment of said implement to implement transport means and frame means including a tool mounting member, the improvement of hitch construction comprising: means for connecting said frame means to said means for attachment, said means for connecting including first means secured to the frame means, second means connected to the means for attachment, upright guide means attached to one of said first and second means, and mounted on the other of said first and second means being mounted for movement in an upright direction on the upright guide means whereby the first and second means can selectively move toward and away from each other, power means mounted on one of said first and second means and connected to the other of said first and second means for vertically displacing and positioning said first means with respect to said second means whereby the elevation of said frame means relative to the means for attachment can be adjusted.
Claim 3
Dependent Claim
35 words
The structure of claim 1 wherein: said upright guide means includes an upright guide member secured to the means for connecting, said first means and second menas being slidably mounted on said upright guide member.
Claim 4
Dependent Claim
36 words
The structure of claim 1 wherein: said power means for positioning said first means with respect to said second means includes an expansion cylinder having its opposite ends connected respectively to said first and second means.
Claim 5
Dependent Claim
30 words
The structure of claim 1 wherein: said upright guide means comprise a pair of laterally spaced guide rods secured to the second means and slideably mounted in the first means.
Claim 6
Dependent Claim
23 words
The structure of claim 4 wherein: said power means is an upright hydraulic cylinder having a portion located between the spaced guide rods.
Claim 7
Dependent Claim
147 words
In an implement of the type drawn by a vehicle and including a frame means having a mounting member for a tool and a hitch for connection to said vehicle, the improvement of: means for adjusting the elevation of said frame means with respect to said hitch comprising first means secured to the frame means, second means connected to said hitch, a first upright member attached to said second means and, at least in part, rotatable about a vertical axis as said hitch is rotated in a substantially horizontal plane, said first upright member being slidable relative to said first means in a sense along said vertical axis, and means connected to said first means and said second means for displacing said first means relative to said hitch in a sense along said vertical axis to adjust the position of said frame means relative to said hitch.
Claim 8
Dependent Claim
147 words
In an implement of the type drawn by a vehicle and including a frame means having a mounting member for a tool and a hitch for connection to said vehicle, the improvement of: means for adjusting the elevation of said frame means with respect to said hitch comprising first means secured to the frame means, second means connected to said hitch, a first upright member attached to said second means and, at least in part, rotatable about a vertical axis as said hitch is rotated in a substantially horizontal plane, said first upright member being slidable relative to said first means in a sense along said vertical axis, and means connected to said first means and said second means for displacing said first means relative to said hitch in a sense along said vertical axis to adjust the position of said frame means relative to said hitch.
Claim 9
Dependent Claim
31 words
The structure of claim 6 including: wheel means attached to said mounting member, said wheel means including means for adjusting the vertical separation between said wheel means and said frame means.
Claim 10
Dependent Claim
48 words
The structure of claim 6 including: a guide rod substantially parallel to said first upright member and connected to said first means and said second means, said guide rod being rigidly attached to one of said first means and said second means and slidably connected with the other.
Claim 11
Dependent Claim
31 words
The structure of claim 6 wherein: said means for displacing said first means includes an expansion cylinder having its opposite ends connected respectively to said first means and said second means.
Claim 12
Dependent Claim
23 words
The structure of claim 6 including: connecting means between said second means and said frame means to provide for stability of said implement.
Claim 13
Dependent Claim
64 words
The structure of claim 6 including: wheel means attached to said frame means, said wheel means including means for adjusting the position of said wheel means relative to said frame means, means for operating said means for adjusting and said means for dIsplacing said frame means relative to said hitch being to adjust the vertical height and position of said frame means above grade.
Claim 14
Dependent Claim
55 words
The structure of claim 6 including: wheel means attached to said frame means, said wheel means including adjustable wheel path guide means, said first vertical member including means connected with said wheel path guide means to adjust said wheel path guide means in response to rotation of said first upright member about said vertical axis.
Claim 15
Dependent Claim
64 words
The structure of claim 6 including: wheel means attached to said frame means by means including a rotatable, upright pivot member; a first lever arm attached to said pivot member; a second lever arm attached to said upright member, and linkage means connecting said lever arms to provide rotational movement of said wheel means to rotation of said upright member about said vertical axis.
Claim 16
Dependent Claim
17 words
The structure of claim 6 including: auxiliary interconnecting means between said second means and said frame means.
Claim 17
Dependent Claim
30 words
The structure of claim 14 wherein: said auxiliary interconnecting means include a tie rod extending in the direction of desired implement travel from said second means to said frame means.
Claim 18
Dependent Claim
45 words
The structure of claim 6 including: a second upright member attached to the second means and slideable relative to the first means along a vertical axis, said means for displacing said first means being located between the first upright member and the second upright member.
Claim 19
Dependent Claim
17 words
The structure of claim 16 wherein: the means for displacing the first means is a hydraulic cylinder.
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) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |