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.:
Date of Patent:
Dec. 30, 1986
Filed:
Jul. 15, 1985
Applicant:
Inventor:
David B Richards, Fremont, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E01F / ; E01F / ;
U.S. Cl.
CPC ...
404-6 ; 404-9 ;
Abstract
An elongated roadway barrier having an upright wall attached to a base support adapted to engage a roadway surface is provided with retractable wheels which are lowered simultaneously with the application of a lateral force to the barrier using a cable system attached to drive motors located proximate the side of the roadway or using a self-propelled drive mounted in the barrier.
Richards, David. (1986). Movable roadway barrier (U.S. Patent No. 4632598). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4632598
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile