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US3826314A Expired / Lapsed US ⏱️ 0.0 years remaining

Cultivating implements

Assignee: Individual
•
Filing: 1972-04-24
•
Granted: 1974-07-30
•
Expires: 1992-04-24
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Abstract

Abstract A cultivator connectable to the three point lifting hitch of a tractor and having a plurality of side-by-side rotatable supports with tines. The frame has a trestle which connects to the tractor''s hitch. The supports and tines are turnable about shafts and mounted in a row with vertically adjustable screens with locking guides located at each end of the row. The frame of the cultivator includes an upper and two lower arms connected to the tractor''s three point hitch. A further implement, such as a seed drill machine has a further coupling trestle which can be pivotally connected to the arms and trails the tine supports. Also, a roller is adjustably mounted on the frame, immediately to the rear of the tine supports. The tines are tapered towards their bent-over tips and can be rectangular in section.

Inventors

  • 👤 C Bom
  • 👤 Der Lely A Van

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 22:58
CPC Classifications
A; A01; A01B; A01B49/00; A01B49/04; A01B49/06; A01B49/065

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 244 words
A cultivating implement for attachment to a lifting hitch of a tractor comprising a frame and a row of side-by-side rotatable tine support members, said support members each being rotatable about an upwardly extending shaft and said frame comprising an elongated and horizontally extending main beam which houses a drive mechanism connected to the shafts of said support members and said main beam extending generally transverse to the direction of intended travel, said main beam having a forward three point coupling member which extends above said beam and pivotally interconnects the implement to said hitch, a further coupling member positioned to the rear of said main beam for connection to a trailing agricultural device, arm means interconnecting said coupling members to maintain same in relative position with respect to one another, said arm means comprising substantially horizontal support arms which pivotally connect said forward coupling member with said further coupling member and said support arms including a pair of lower coupling arms located at generally the same level and a single upper coupling arm positioned at a higher level and approximately midway between said two lower arms when the implement is viewed in plan, said arms extending above and across said main beam, at least one flexible stop interconnecting said upper and lower arms to prevent movement of said arms beyond a predetermined limit, whereby the implement and device can be raised with the lifting hitch without the arms bearing on the main beam.
Claim 2
Dependent Claim 244 words
A cultivating implement for attachment to a lifting hitch of a tractor comprising a frame and a row of side-by-side rotatable tine support members, said support members each being rotatable about an upwardly extending shaft and said frame comprising an elongated and horizontally extending main beam which houses a drive mechanism connected to the shafts of said support members and said main beam extending generally transverse to the direction of intended travel, said main beam having a forward three point coupling member which extends above said beam and pivotally interconnects the implement to said hitch, a further coupling member positioned to the rear of said main beam for connection to a trailing agricultural device, arm means interconnecting said coupling members to maintain same in relative position with respect to one another, said arm means comprising substantially horizontal support arms which pivotally connect said forward coupling member with said further coupling member and said support arms including a pair of lower coupling arms located at generally the same level and a single upper coupling arm positioned at a higher level and approximately midway between said two lower arms when the implement is viewed in plan, said arms extending above and across said main beam, at least one flexible stop interconnecting said upper and lower arms to prevent movement of said arms beyond a predetermined limit, whereby the implement and device can be raised with the lifting hitch without the arms bearing on the main beam.
Claim 3
Dependent Claim 17 words
The implement of claim 1, wherein two flexible stops interconnect the upper arm with the lower arms.
Claim 4
Dependent Claim 42 words
The implement of claim 2, wherein a forward end of each stop extends from adjacent a pivot connection of the upper arm with the forward coupling member, downwardly to adjacent a pivot connection of a lower arm with the further coupling member.
Claim 5
Dependent Claim 30 words
The implement of claim 1, wherein said coupling member is a triangular shaped trestle and the upper lifting link of said hitch is connected to the top of said trestle.
Claim 6
Dependent Claim 20 words
The implement of claim 4, wherein strengthening arm means connects said trestle adjacent its top to said main frame beam.

References Cited (Backward Citations)

US17831A Cited
US510143A Cited
US2582364A Cited
US2609215A Cited
DE1009414B Cited
GB847413A Cited
US3542133A Cited
US3508617A Cited
NL6714826A Cited
NL6715977A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-07-29 1978-01-28 1978-07-30 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-07-29 1982-01-28 1982-07-30 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-07-29 1986-01-28 1986-07-30 $7700.00 Window Closed / Lapsed

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