Patent US3575243A successfully refreshed from Google Patents.
US3575243A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Field cultivator
Assignee: Deutz Allis Corp
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Filing: 1968-09-11
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Granted: 1971-04-20
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Expires: 1988-09-11
Abstract
Abstract A field cultivator equipped with rubber cushions positioned between tool shanks and supporting frames for providing a flexible mounting of the tool shanks permitting the tool shanks to flex in any direction.
Inventors
- 👤 Alexander H Mark
- 👤 Maynard E Walberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:25
CPC Classifications
A; A01; A01B; A01B61/00; A01B61/04; A01B61/044; A01B61/046; A01B35/00; A01B35/20; A01B35/22; A01B35/24
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
190 words
In combination in a ground working tool, a nonrotatable transversely extending support member provided with a diamondshaped cross section having four sides, a pair of identical clamp members adjustably joined together In surrounding relation to said support member, said clamp members being joined to each other at positions above and below points of said diamond-shaped cross section to provide a generally square-shaped cross section having four sides with the upper and lower sides extending generally horizontal and the other two sides extending vertically, resilient means interposed between said clamp members and said support member for permitting a relative resilient resisted movement of said clamp members in all directions, said resilient means comprising a rubber member positioned between each side of said support member and the adjacent two sides of said clamp members, adjustable means for moving said clamp members toward or away from each other to vary the resilience of said rubber members, a tool shank connected to a vertical side of one of said clamp members and to the lower sides of both said clamp members for movement therewith, and a ground engaging tool connected to said tool shank.
Claim 2
Dependent Claim
190 words
In combination in a ground working tool, a nonrotatable transversely extending support member provided with a diamondshaped cross section having four sides, a pair of identical clamp members adjustably joined together In surrounding relation to said support member, said clamp members being joined to each other at positions above and below points of said diamond-shaped cross section to provide a generally square-shaped cross section having four sides with the upper and lower sides extending generally horizontal and the other two sides extending vertically, resilient means interposed between said clamp members and said support member for permitting a relative resilient resisted movement of said clamp members in all directions, said resilient means comprising a rubber member positioned between each side of said support member and the adjacent two sides of said clamp members, adjustable means for moving said clamp members toward or away from each other to vary the resilience of said rubber members, a tool shank connected to a vertical side of one of said clamp members and to the lower sides of both said clamp members for movement therewith, and a ground engaging tool connected to said tool shank.
Claim 3
Dependent Claim
169 words
In combination in a ground working tool, a nonrotatable transversely extending support member provided with a cross section having four sides, a pair of identical clamp members adjustably joined together in surrounding relation to said support member, resilient means interposed between said clamp members and said support member for permitting a relative resilient resisted movement of said clamp members in all directions, said resilient means comprising a rubber member positioned between each side of said support and said identical clamp members, adjustable means for moving said clamp members toward or away from each other to vary the resilience of said rubber members, each of said rubber members being cylindrical and presenting a circumferential surface to said clamp members and to said support member, measured membranes connecting and spacing said rubber members from each other for aiding in assembling same between said clamp members and said support member, a tool shank connected to said clamp members for movement therewith, and a ground engaging tool element connected to said tool shank.
Claim 4
Dependent Claim
169 words
In combination in a ground working tool, a nonrotatable transversely extending support member provided with a cross section having four sides, a pair of identical clamp members adjustably joined together in surrounding relation to said support member, resilient means interposed between said clamp members and said support member for permitting a relative resilient resisted movement of said clamp members in all directions, said resilient means comprising a rubber member positioned between each side of said support and said identical clamp members, adjustable means for moving said clamp members toward or away from each other to vary the resilience of said rubber members, each of said rubber members being cylindrical and presenting a circumferential surface to said clamp members and to said support member, measured membranes connecting and spacing said rubber members from each other for aiding in assembling same between said clamp members and said support member, a tool shank connected to said clamp members for movement therewith, and a ground engaging tool element connected to said tool shank.
Claim 5
Dependent Claim
43 words
In combination as recited in claim 2 and wherein said clamp members are provided with turned over portions contacting end portions of said cylindrical rubber members for limiting elongation of said rubber members when the resilience of said rubber members is being varied.
Claim 6
Dependent Claim
42 words
In combination as recited in claim 1 and wherein said clamp members are provided with turned over portions contacting end portions of said rubber members for limiting elongation of said rubber members when the resilience of said rubber members is being varied.
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) | 1974-04-19 | 1974-10-19 | 1975-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-19 | 1978-10-19 | 1979-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-19 | 1982-10-19 | 1983-04-20 | $7700.00 | Window Closed / Lapsed |