Coupling for use with boring tool or bit
Nystrom April 21, 1
U.S. patent number D289,405 [Application Number 06/623,382] was granted by the patent office on 1987-04-21 for coupling for use with boring tool or bit. Invention is credited to Rune Nystrom.
| United States Patent | D289,405 |
| Nystrom | April 21, 1987 |
Coupling for use with boring tool or bit
Claims
The ornamental design for a coupling for use with a boring tool or bit, as shown and described.
| Inventors: | Nystrom; Rune (S-781 32 Borlange, SE) |
|---|---|
| Appl. No.: | 06/623,382 |
| Filed: | June 22, 1984 |
Foreign Application Priority Data
| Dec 27, 1983 [SE] | 83-3407 | |||
| Current U.S. Class: | D15/140; D15/138 |
| Field of Search: | ;D15/138,140 ;279/8,1B,99 ;408/206,239,240 |
References Cited [Referenced By]
U.S. Patent Documents
| 3489191 | January 1970 | Blevins |
| 3843143 | October 1974 | Laxson |
| 3876319 | April 1975 | Meyer |
| 4171821 | October 1979 | Miller |
| 4405269 | September 1983 | Hertzler |
| 4557642 | December 1985 | Dudas et al. |
| 4573839 | March 1986 | Finnegan |
Attorney, Agent or Firm: Gifford, Groh, VanOphem, Sheridan, Sprinkle and Dolgorukov
Description
FIG. 1 is a bottom perspective view of a coupling for use with a boring tool or bit showing my new design.
FIG. 2 is a top perspective view thereof;
FIG. 3 is a reduced exploded top view thereof;
FIG. 4 is a reduced exploded bottom perspective view thereof.
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