US4261593A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Planting and fertilizing apparatus
Assignee: LAMBERT CORP
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Filing: 1979-12-20
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Granted: 1981-04-14
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Expires: 1999-12-20
Abstract
Abstract A relatively compact and lightweight planting and fertilizing apparatus is attached to a small garden tractor by a universal hitch which restricts lateral movement between the two. The apparatus is spring biased downwardly to assure film contact with the ground, and can be raised above the ground by a single lever. The lever carries the biasing spring, and cams lifting bearings on the lever against a lifting plate on the apparatus. The fertilizer is fed by an axially adjustable feed gear rotated by a ground engaging wheel on the apparatus. The feed gear is biased by an adjusting spring against a threaded adjusting knob which sets the axial position of the feed gear.
Inventors
- 👤 Robert R. Yeager
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:37
CPC Classifications
A; A01; A01C; A01C15/00; A01C15/005; A01C7/00; A01C7/20; A01C7/201; F; F16; F16B; F16B2200/00; F16B2200/40; F16B2200/403
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
161 words
For use with a gardening apparatus, a universal hitch for attaching the gardening apparatus to a garden tractor hitch for supporting the apparatus and restricting lateral movement thereof relative to the tractor, comprising: (a) a hitch arm having a substantially horizontal portion, (b) a hitch lock for engaging the tractor hitch simultaneously at at least two laterally displaced points thereon for restricting lateral movement with respect thereto, (c) said hitch lock having a substantially flat surface on one end thereof, (d) means forming a stepped opening on the end of said hitch lock opposite said one end thereof, the sides of said stepped opening defining a pair of oppositely disposed outwardly extending fingers, and (e) means for locking said hitch lock on said hitch arm portion in engagement with and positioned against the tractor hitch at said at least two laterally displaced points for restricting lateral movement with respect to said universal hitch regardless of the configuration of the tractor hitch.
Claim 2
Dependent Claim
161 words
For use with a gardening apparatus, a universal hitch for attaching the gardening apparatus to a garden tractor hitch for supporting the apparatus and restricting lateral movement thereof relative to the tractor, comprising: (a) a hitch arm having a substantially horizontal portion, (b) a hitch lock for engaging the tractor hitch simultaneously at at least two laterally displaced points thereon for restricting lateral movement with respect thereto, (c) said hitch lock having a substantially flat surface on one end thereof, (d) means forming a stepped opening on the end of said hitch lock opposite said one end thereof, the sides of said stepped opening defining a pair of oppositely disposed outwardly extending fingers, and (e) means for locking said hitch lock on said hitch arm portion in engagement with and positioned against the tractor hitch at said at least two laterally displaced points for restricting lateral movement with respect to said universal hitch regardless of the configuration of the tractor hitch.
Claim 3
Dependent Claim
159 words
The hitch of claim 1 further comprising: (a) means forming at least one groove extending along said hitch arm portion on one of the top or bottom sides thereof, (b) means forming a complementary rib on the opposite side of said hitch arm portion for each said groove, (c) means forming ribs in said hitch lock complementary to said groove in said hitch arm portion and receivable therein when placed thereadjacent, (d) means forming complementary grooves in said hitch lock on the opposite side from the ribs therein, said hitch lock on the opposite side from the ribs therein, said hitch lock grooves also being complementary to said ribs on said hitch arm portion for receiving said ribs therein when placed thereadjacent, said ribs and grooves preventing relative rotation between said hitch lock and said hitch arm when interengaged, and (e) means for locking said hitch lock on said hitch arm portion with the ribs and grooves thereof interengaged.
Claim 4
Dependent Claim
57 words
The hitch of claim 2 wherein said means for locking said hitch lock on said hitch arm portion includes means for adjusting the position of said hitch lock on said hitch arm portion by releasing said locking means, sliding said ribs along said grooves, and then again locking said hitch lock in position on said hitch arm.
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) | 1984-04-13 | 1984-10-13 | 1985-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-13 | 1988-10-13 | 1989-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-13 | 1992-10-13 | 1993-04-14 | $7700.00 | Window Closed / Lapsed |