Severing head with tapered centralizer assembly

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Description

FIG. 1 is a top perspective view of a severing head with tapered centralizer assembly showing my new design;

FIG. 2 is a typical side elevational view;

FIG. 3 is a top plan view thereof; and,

FIG. 4 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
D308874 June 26, 1990 Tsujimura et al.
4125161 November 14, 1978 Chammas
4250960 February 17, 1981 Chammas
4494601 January 22, 1985 Pratt et al.
4619318 October 28, 1986 Terrell et al.
Other references
  • McCullogh Tool Company; McCullogh Cheemical Cutter; Mar. 1957; p. 135; Applicant Provided.
Patent History
Patent number: D354498
Type: Grant
Filed: Sep 27, 1993
Date of Patent: Jan 17, 1995
Inventor: Wayne B. Hatcher (Harvey, LA)
Primary Examiner: Nelson C. Holtje
Assistant Examiner: Antoine D. Davis
Attorney: George A. Bode
Application Number: 0/13,544
Classifications
Current U.S. Class: Cutting Tool, E.g., Drill Bit, Etc. (D15/139)