← Back to Patent Explorer
US3783948A Expired / Lapsed US ⏱️ 0.0 years remaining

Cultivators

Assignee: Individual
•
Filing: 1971-09-13
•
Granted: 1974-01-08
•
Expires: 1991-09-13
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A cultivator with a frame that supports a plurality of side-byside rotatable members having spaced-apart tines that crumble the soil during operation. The tines are held by a support in a vareity of positions so that the soil working portions are changed depending on the amount of soil working desired. A trailing soil-smoothing member is attached to the rear of the cultivator.

Inventors

  • 👤 Der Lely A Van
  • 👤 C Bom

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 14:53
CPC Classifications
A; A01; A01B; A01B33/00; A01B33/06; A01B33/065

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 195 words
A cultivator attachment comprising an elongated frame movable over the ground transverse to the direction of travel with a plurality of rotatable soil cultivator members supported in a row along said frame in side-by-side relationship with neighboring cultivator members being rotatable in opposite directions from one another about upwardly extending shafts and alternatively located cultivator members being rotatable in like directions with one another, said shafts being in driving connection with a power input shaft and each of said cultivator members being an elongated, substantially horizontal, tine support having a tine secured adjacent each end thereof, the tines of neighboring cultivator members being positioned to work and cultivate overlapping strips of ground, each of said tines having a fastening portion which is connected to its respective support and an integral substantially straight soil-working portion including a bottom tip substantially inclined to said fastening portion, substantially the entire soil-working portion, with respect to the direction of rotation of its respective support, being located and secured in position to trail at the rear of said fastening portion, the soil-working portions of the tines of alternatively located cultivator members being positioned to extend substantially parallel to one another.
Claim 2
Dependent Claim 195 words
A cultivator attachment comprising an elongated frame movable over the ground transverse to the direction of travel with a plurality of rotatable soil cultivator members supported in a row along said frame in side-by-side relationship with neighboring cultivator members being rotatable in opposite directions from one another about upwardly extending shafts and alternatively located cultivator members being rotatable in like directions with one another, said shafts being in driving connection with a power input shaft and each of said cultivator members being an elongated, substantially horizontal, tine support having a tine secured adjacent each end thereof, the tines of neighboring cultivator members being positioned to work and cultivate overlapping strips of ground, each of said tines having a fastening portion which is connected to its respective support and an integral substantially straight soil-working portion including a bottom tip substantially inclined to said fastening portion, substantially the entire soil-working portion, with respect to the direction of rotation of its respective support, being located and secured in position to trail at the rear of said fastening portion, the soil-working portions of the tines of alternatively located cultivator members being positioned to extend substantially parallel to one another.
Claim 3
Dependent Claim 26 words
A cultivator as claimed in claim 1, wherein the angle enclosed between the longitudinal axis of said fastening portion and said soil-working portion is approximately 15*.
Claim 4
Dependent Claim 25 words
A cultivator as claimed in claim 1, wherein said shafts are each secured to a tine support between the fastening portions of the two tines.
Claim 5
Dependent Claim 25 words
A cultivator as claimed in claim 1, wherein one side of said frame is connected to vertically adjustable ground engaging means that support the frame.
Claim 6
Dependent Claim 38 words
A cultivator as claimed in claim 4, wherein said vertically adjustable ground engaging means is connected to the forward side of said frame and a ground leveling member is pivotally secured to the rear side of said frame.
Claim 7
Dependent Claim 177 words
A cultivator attachment comprising an elongated frame movable over the ground transverse to the direction of travel with a plurality of rotatable soil cultivator members supported in a row along said frame in side-by-side relationship, with neighboring cultivator members being rotatable in opposite directions from one another about upwardly extending shafts, and said shafts being in driving connection with a power input shaft, each of said cultivator members being an elongated, substantially horizontal tine supPort having a tine secured adjacent each end thereof, said tines being positioned to work and cultivate overlapping strips of ground, each of said tines having a fastening portion which is connected to its respective support and an integral straight soil-working portion with a plural-sided cross section which is substantially inclined to said fastening portion, substantially the entire soil-working portion, including the tip thereof, with respect to the direction of rotation of the cultivator member, being secured to trail at the rear of said fastening portion, the soil-working portions of the tines of alternatively located cultivator members extending substantially parallel to one another.
Claim 8
Dependent Claim 177 words
A cultivator attachment comprising an elongated frame movable over the ground transverse to the direction of travel with a plurality of rotatable soil cultivator members supported in a row along said frame in side-by-side relationship, with neighboring cultivator members being rotatable in opposite directions from one another about upwardly extending shafts, and said shafts being in driving connection with a power input shaft, each of said cultivator members being an elongated, substantially horizontal tine supPort having a tine secured adjacent each end thereof, said tines being positioned to work and cultivate overlapping strips of ground, each of said tines having a fastening portion which is connected to its respective support and an integral straight soil-working portion with a plural-sided cross section which is substantially inclined to said fastening portion, substantially the entire soil-working portion, including the tip thereof, with respect to the direction of rotation of the cultivator member, being secured to trail at the rear of said fastening portion, the soil-working portions of the tines of alternatively located cultivator members extending substantially parallel to one another.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-01-07 1977-07-09 1978-01-08 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-01-07 1981-07-09 1982-01-08 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-01-07 1985-07-09 1986-01-08 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag