Digital tachometer design

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Description

FIG. 1 is a top right front perspective view of a digital tachometer showing my new design with the handle in the upright position;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
D198913 August 1964 Smith
D251368 March 20, 1979 Katzmann
D251370 March 20, 1979 Katzmann
Other references
  • Weston Cat. #07-107, 10/69, cover, AC/DC Digital Multimeter. Gold Book, vol. 3/623, Sec. 4200, 1974-1975-Digital Thermometers at top. DANA Cat., 3/75, Model Nos. 7570 & 7580, Frequency Counters.
Patent History
Patent number: D254960
Type: Grant
Filed: Dec 29, 1977
Date of Patent: May 13, 1980
Assignee: Kent-Moore Instrument Company (Pioneer, OH)
Inventor: Patrick J. Helm (Toledo, OH)
Primary Examiner: Nelson C. Holtje
Attorney: Oliver E. Todd, Jr.
Application Number: 5/865,366
Classifications
Current U.S. Class: Speedometer Or Tachometer (D10/98)
International Classification: D1004;