Ultrasonic distance estimator

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Description

FIG. 1 is a top, front and right-side perspective view of an ultrasonic distance estimator showing my new design;

FIG. 2 is a top plan view;

FIG. 3 is a bottom plan view;

FIG. 4 is a right side elevational view;

FIG. 5 is a left side elevational view;

FIG. 6 is a front elevational view; and

FIG. 7 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: D317881
Type: Grant
Filed: Jun 14, 1989
Date of Patent: Jul 2, 1991
Assignee: Solar Wide Industrial Limited (Kowloon)
Inventor: Ram Shalvi (Hong Kong)
Primary Examiner: Bruce W. Dunkins
Assistant Examiner: Antoine D. Davis
Law Firm: Darby & Darby
Application Number: 7/366,024
Classifications
Current U.S. Class: Linear Or Distance (9) (D10/70)