Switch key
Latest Emerson Electric Co. Patents:
FIG. 1 is a perspective view of a switch key showing our new design;
FIG. 2 is a side elevational view of the switch key on an enlarged scale;
FIG. 3 is a front elevational view of the switch key on an enlarged scale;
FIG. 4 is a top plan view of the switch key on an enlarged scale;
FIG. 5 is a side elevational view of the switch key similar to FIG. 2, but with the bottom prongs shown;
FIG. 6 is a front elevational view of the switch key on a greatly enlarged scale;
FIG. 7 is a rear end elevational view of the switch key on a greatly enlarged scale; and
FIG. 8 is a bottom plan view of the switch key on a greatly enlarged scale.
The prongs are omitted from the switch key in FIGS. 1, 2 and 3 for clarity of disclosure, it being understood that the _switch key of our design is shown completely in FIGS. 5, 6, and 7. A switch into which the switch key of our design may be _inserted is shown in broken lines in FIGS. 1, 2 and 3 for illustrative purposes only. _
| D39736 | December 1908 | Murray |
| D225651 | December 1972 | Shifley |
| 3618409 | November 1971 | Shifley |
| 3959618 | May 25, 1976 | Carroll |
Type: Grant
Filed: Mar 31, 1980
Date of Patent: Apr 5, 1983
Assignee: Emerson Electric Co. (St. Louis, MO)
Inventors: Richard L. Mitchell (St. Louis, MO), Thomas A. Heron (St. Louis, MO)
Primary Examiner: Susan J. Lucas
Law Firm: Polster, Polster and Lucchesi
Application Number: 6/135,874
International Classification: D1303;
