U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Garden crook

Patent 4177864 Issued on December 11, 1979. Estimated Expiration Date: Icon_subject November 7, 1997. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

D32854

73525

1039056

1185581

1224957

1549042

1922917

2343176

2710571

Multi-material ripper tip Patent #: 3984910
Issued on: 10/12/1976
Inventor: Helton ,   et al.

Inventor

Application

No. 05/849328 filed on 11/07/1977

US Classes:

172/371, Hand tool172/747Specific material

Examiners

Primary: Stouffer, Richard T.

Attorney, Agent or Firm

International Classes

A01B 1/00 (20060101)
A01B 1/08 (20060101)

Abstract

A gardening tool with a long handle, having a small flat planar portion disposed at approximately right angles to the handle and connected to the handle by a semi-circular rectangular rod portion. A straight portion is formed, extending from the partial circular portion, to attach to the long handle. The small flat portion has a taper both in depth and in width to a free cutting edge. A notch is formed in the middle of the free cutting edge. Carbide tips can be provided on the free cutting edge for increased wear resistance. The garden tool can be used for cultivating or furrowing a row to a depth of five to six inches for seed planting. When pulled through the earth, the partial circular portion easily rolls the dirt away so that there is no jam up of soil in the rod support portion. The rod member is formed from spring steel to provide for a strong, resilient tool member. The length of the flat planar portion is relatively small being of only slighter greater length than width. The width of the flat planar surface is about three times the width of the rectangular support rod. This provides for a relatively small planar surface which can be easily inserted in soil to a substantial depth. Having the flat planar surface disposed generally perpendicular to the longitudinal axis of the garden crook handle permits the cutting edge to be inserted into the soil at an appropriate depth for proper penetration.

Other References

  • "Cemented Carbides Used for Other Purposes Than Cutting Tools", Machinery, pp. 150-156, Aug. 1946
  • Chapter 23, "Carbides," Brazing Manual, American Welding Society, Inc., New York, N.Y., pp. 232-236, 1963
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