logo

For the Inventor, By the Inventor

The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 4254418 B1

PDFFull Text
Date of Patent:
Mar. 03, 1981

Filed:

Aug. 23, 1978

Collision avoidance system using short pulse signal reflectometry

Applicant:
Inventors:

Harry M Cronson, Lexington, MA (US);

Gerald F Ross, Lexington, MA (US);

Basrur R Rao, Lexington, MA (US);

Werner Lerchenmueller, Bellevue, WA (US);

Prentis B Drew, Kirkland, WA (US);

Assignee:

Sperry Corporation, New York, NY (US);

Attorneys:

Terry; Howard P.

Levine; Seymour

Primary Examiner:

Theodore M Blum

Int. Cl.
CPC ...
G01S / ;
U.S. Cl.
CPC ...
3431 / ; 340 47 ;
Abstract

A collision avoidance system for rapid transit vehicles employing baseband radar principles in which signals with duration in the order of nanoseconds are transmitted down track along a surface wave transmission line. Reflections from a passive target located on the preceding vehicle are processed to establish the distance between the vehicles to within an accuracy previously unachievable.

Find Patent Forward Citations

Cronson, Harry. (1981). Collision avoidance system using short pulse signal reflectometry (U.S. Patent No. 4254418). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4254418

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Loading…