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:
Jun. 03, 1986
Filed:
Oct. 05, 1983
Applicant:
Inventor:
John D McKenney, South Laguna, CA (US);
Assignee:
Lear Siegler, Inc., Santa Monica, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B60Q / ;
U.S. Cl.
CPC ...
3401 / ; 340109 ; 340119 ; 40550 ; 40590 ; 280 / ;
Abstract
Traffic control apparatus of the wheeled trailer type having pairs of links for selectively and uniformly moving a traffic control message panel between a substantially vertical display position and a substantially horizontal storage/transit position. Three pairs of links are controlled by a winch-cable system coupled thereto to control the pivoting movements of the pairs of links to cause the smooth movement of the traffic control message panel between positions. The pivot points for the pairs of linkages are preselected to minimize the tension on the winch cable during the panel movements between positions.