US3631929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Harrow tooth attachment
Assignee: Individual
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Filing: 1970-06-17
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Granted: 1972-01-04
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Expires: 1990-06-17
Abstract
Abstract The invention comprises a harrow tooth attachment for attachment to the front of a grain drill. The attachment has a harrow tooth with the upper end wound about a pipe and fixed thereto. The pipe has a flange projecting upward from its upper end with a pair of bores for receiving a pair of bolts from a second separate flange and with the flanges engaging the opposite sides of a frame member on the front of the grain drill.
Inventors
- 👤 Robert B Gates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:06
CPC Classifications
A; A01; A01B; A01B23/00; A01B23/02; A01B49/00; A01B49/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
199 words
A harrow tooth attachment for attachment for attachment to the pivotally mounted disc frame member at the front of a grain drill and wherein said frame member has elongated rod portions, said attachment comprising a pipe, said pipe having bored openings therethrough, a harrow tooth rod having a straight lower end with an upper portion coiled around the pipe and terminating in a loop, a bolt passing through the loop and bore openings in the pipe, a nut threaded onto the outer end of the bolt to fix the harrow tooth to the pipe, a flange welded onto a end of the pipe, said flange engaging one side of the rod portion of the frame member, a plate engaging the other side of the rod portion of the frame member, rod flange and plate each having a pair of axially aligned bores with a pair of bolts passing through the bores above and below the rod portion, nuts threaded onto the outer ends of the pair of bolts to fix the flange and plate to the rod portion and thereby fix the pipe and harrow tooth to the rod portion of the disc frame member of the grain drill.
Claim 2
Dependent Claim
199 words
A harrow tooth attachment for attachment for attachment to the pivotally mounted disc frame member at the front of a grain drill and wherein said frame member has elongated rod portions, said attachment comprising a pipe, said pipe having bored openings therethrough, a harrow tooth rod having a straight lower end with an upper portion coiled around the pipe and terminating in a loop, a bolt passing through the loop and bore openings in the pipe, a nut threaded onto the outer end of the bolt to fix the harrow tooth to the pipe, a flange welded onto a end of the pipe, said flange engaging one side of the rod portion of the frame member, a plate engaging the other side of the rod portion of the frame member, rod flange and plate each having a pair of axially aligned bores with a pair of bolts passing through the bores above and below the rod portion, nuts threaded onto the outer ends of the pair of bolts to fix the flange and plate to the rod portion and thereby fix the pipe and harrow tooth to the rod portion of the disc frame member of the grain drill.
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) | 1975-01-03 | 1975-07-05 | 1976-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-03 | 1979-07-05 | 1980-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-03 | 1983-07-05 | 1984-01-04 | $7700.00 | Window Closed / Lapsed |