Ultrasonic distance estimator

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Description

FIG. 1 is a top plan view of an ultrasonic distance estimator, showing my new design;

FIG. 2 is a bottom plan view;

FIG. 3 is a right side elevational view, the left side elevational view being identical;

FIG. 4 is a front elevational view;

FIG. 5 is a rear elevational view thereof.

Referenced Cited
U.S. Patent Documents
T101001 September 1, 1981 Shipp et al.
4281404 July 28, 1981 Morrow, Jr. et al.
4910717 March 20, 1990 Terry
Other references
  • Hardware Age, 4/87, p. 101, Digitape. Hardware Age, 7/87, p. 309, Sonin 60, 150, 250. Hardware Age, 7/87, p. 322, Electronic measurer.
Patent History
Patent number: D316526
Type: Grant
Filed: May 24, 1989
Date of Patent: Apr 30, 1991
Assignee: Solar Wide Industrial Limited (Kowloon)
Inventor: Ram Shalvi (Hong Kong)
Primary Examiner: Nelson C. Holtje
Assistant Examiner: Antoine D. Davis
Law Firm: Darby & Darby
Application Number: 7/356,921
Classifications
Current U.S. Class: Linear Or Distance (9) (D10/70)