Roller bit

- Fagersta AB
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Description

FIG. 1 is a top plan view of a roller bit showing my new design.

FIG. 2 is a side elevational view taken in the direction of any one of the three arrows 2 in FIG. 1;

FIG. 3 is a side elevational view taken in the direction of any one of the three arrows 3 in FIG. 1.

FIG. 4 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
D265205 June 29, 1982 Munson
2687875 August 1954 Morton et al.
3442342 May 1969 McElya et al.
4187922 February 12, 1980 Phelps
4343371 August 10, 1982 Baker III et al.
Patent History
Patent number: D273680
Type: Grant
Filed: Apr 27, 1981
Date of Patent: May 1, 1984
Assignee: Fagersta AB (Fagersta)
Inventor: Karl-Erik Kangas (Fagersta)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Suzanne N. Gitlin
Law Firm: Larson and Taylor
Application Number: 6/257,874