Patent US3726346A successfully refreshed from Google Patents.
US3726346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Implement hitch
Assignee: Individual
•
Filing: 1971-02-10
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Granted: 1973-04-10
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Expires: 1991-02-10
Abstract
Abstract The invention consists of an implement hitch designed for use with existing standard farm tractor hitches for plowing wherein the present hitch is used to convert one form of plowing operation to another by converting conventional manual operation to a substantially automatic operation saving considerable labor and time.
Inventors
- 👤 K Thompson
- 👤 W Thompson
- 👤 D Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:29
CPC Classifications
A; A01; A01B; A01B59/00; A01B59/06; A01B59/061; A01B59/062
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
165 words
In a hitch mechanism adapted to connect a tractor having upper and lower hitch links and power lift means connected to raise and lower said links with an implement hitch having upper and lower connections, said hitch comprising a framework consisting of a main horizontal support beam, a tool bar connected to said beam and adapted to support a plurality of plows, an upper beam supported by said main beam, a support rod below said main beam and connected thereto, an upper bar mounted above the main beam and below said upper beam, said bars adapted to be detachably connected to the upper and lower hitch links of the aforementioned tractor, means on said bars for defining zones formed along said upper and lower bars and means on said bars to confine the tractor links within said zones whereby the tractor links are positioned along several desired points on said bars to vary the transverse position of said implement hitch with respect to the tractor.
Claim 2
Dependent Claim
165 words
In a hitch mechanism adapted to connect a tractor having upper and lower hitch links and power lift means connected to raise and lower said links with an implement hitch having upper and lower connections, said hitch comprising a framework consisting of a main horizontal support beam, a tool bar connected to said beam and adapted to support a plurality of plows, an upper beam supported by said main beam, a support rod below said main beam and connected thereto, an upper bar mounted above the main beam and below said upper beam, said bars adapted to be detachably connected to the upper and lower hitch links of the aforementioned tractor, means on said bars for defining zones formed along said upper and lower bars and means on said bars to confine the tractor links within said zones whereby the tractor links are positioned along several desired points on said bars to vary the transverse position of said implement hitch with respect to the tractor.
Claim 3
Dependent Claim
31 words
An implement hitch as defined in claim 1, a plurality of collars mounted on the lower bar for varying the position of the tractor links with respect to the implement hitch.
Claim 4
Dependent Claim
29 words
An implement hitch as defined in claim 1, a pair of transverse pins adapted to be mounted below the upper bar for receiving the upper link of a tractor.
Claim 5
Dependent Claim
20 words
An implement hitch as defined in claim 1, said plows being transversely spaced and detachably connected to said tool bar.
Claim 6
Dependent Claim
32 words
An implement hitch as defined in claim 4, a plurality of collars mounted on the lower bar for further varying the position of the tractor links with respect to the implement hitch.
Claim 7
Dependent Claim
29 words
An implement hitch as defined in claim 5, a pair of transverse pins adapted to be mounted below the upper bar for receiving the upper link of a tractor.
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) | 1976-04-09 | 1976-10-09 | 1977-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-09 | 1980-10-09 | 1981-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-09 | 1984-10-09 | 1985-04-10 | $7700.00 | Window Closed / Lapsed |