US4078615A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable spring loaded agricultural tool mounting
Assignee: C C KELLEY AND SON Inc
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Filing: 1976-10-15
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Granted: 1978-03-14
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Expires: 1996-10-15
Abstract
Abstract An adjustable spring loaded agricultural tool mounting accommodating pivotal movement of the tool relative to a normal operative relation to an implement frame when said tool encounters an obstacle. The tool includes a part projecting upwardly and rearwardly from the tool pivot and a longitudinally extensible and adjustable strut is pivoted in upwardly and rearwardly spaced relation to the tool pivot and bears against the upper free end portion of said upwardly and rearwardly extending tool part. At least one of said strut and said upwardly and rearwardly projecting tool part includes a spring portion.
Inventors
- 👤 Clarence R. Kelley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:15
CPC Classifications
A; A01; A01B; A01B35/00; A01B35/20; A01B35/22; A01B35/24; A01B61/00; A01B61/04; A01B61/044; A01B61/046
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
146 words
An adjustable spring loaded agricultural tool mounting wherein a tool is pivoted to an implement frame, comprising means pivoting said tool spaced from a rigid frame member, said tool including a part projecting downwardly rearwardly relative to said pivot and a part projecting upwardly rearwardly relative to said pivot, a strut pivoted on an axis parallel to and spaced rearwardly and upwardly from the pivot axis of said tool and bearing against the upper rear end portion of said upwardly rearwardly extending tool part, one of said strut and said upwardly rearwardly projecting tool part including a resilient element urging said tool to a position in which a portion thereof forwardly of its pivot axis normally abuts said rigid frame member, said strut being longitudinally extensible, and adjustable means for maintaining selected longitudinal adjustment of said strut, said upwardly projecting tool part constituting a leaf spring.
Claim 2
Dependent Claim
146 words
An adjustable spring loaded agricultural tool mounting wherein a tool is pivoted to an implement frame, comprising means pivoting said tool spaced from a rigid frame member, said tool including a part projecting downwardly rearwardly relative to said pivot and a part projecting upwardly rearwardly relative to said pivot, a strut pivoted on an axis parallel to and spaced rearwardly and upwardly from the pivot axis of said tool and bearing against the upper rear end portion of said upwardly rearwardly extending tool part, one of said strut and said upwardly rearwardly projecting tool part including a resilient element urging said tool to a position in which a portion thereof forwardly of its pivot axis normally abuts said rigid frame member, said strut being longitudinally extensible, and adjustable means for maintaining selected longitudinal adjustment of said strut, said upwardly projecting tool part constituting a leaf spring.
Claim 3
Dependent Claim
28 words
An adjustable spring loaded agricultural tool mounting as defined in claim 1, wherein said strut constitutes an elongated shank and an abutment head screw threaded in said shank.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-03-13 | 1981-09-12 | 1982-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-13 | 1985-09-12 | 1986-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-13 | 1989-09-12 | 1990-03-14 | $7700.00 | Window Closed / Lapsed |