Rotary mining bit

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Description

FIG. 1 is a top plan view of a rotary mining bit illustrating one embodiment of the invention;

FIG. 2 is a side elevational view of the rotary mining bit of FIG. 1, the opposite side being a miror image;

FIG. 3 is another side elevational view of the rotary mining bit as rotated 90.degree. clockwise from FIGS. 1 and2 thereof, the opposite side being a mirror image; and,

FIG. 4 is a perspective view of the rotary mining bit of FIG. 1.

The representation of the fragmentary mounting base of the mining bit shown in phantom lines is for environmental purposes only and non-limiting upon the scope of the invention.

Referenced Cited
U.S. Patent Documents
D273390 April 10, 1984 Lassiter
D340248 October 12, 1993 Brady
D351174 October 4, 1994 Brady
2650071 August 1953 Rassieur
3131779 May 1964 Rowley et al.
4711312 December 8, 1987 Leibee et al.
4819748 April 11, 1989 Truscott
4852671 August 1, 1989 Southland
5025874 June 25, 1991 Barr et al.
5180022 January 19, 1993 Brady
5429199 July 4, 1995 Sheirer et al.
Patent History
Patent number: D424579
Type: Grant
Filed: May 10, 1999
Date of Patent: May 9, 2000
Inventor: William J. Brady (Creve Coeur, MO)
Primary Examiner: Sandra L. Morris
Attorney: Richard G. Heywood
Application Number: 0/104,622
Classifications
Current U.S. Class: Drilling, Mining, Or Soil Treatment (includes Element) (D15/21); Cutting Tool, E.g., Drill Bit, Etc. (D15/139)
International Classification: 1504;