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:
Jan. 24, 1984
Filed:
Dec. 29, 1980
Applicant:
Inventors:
Donald T Wehmeyer, Roselle, IL (US);
Ronald W Barnhart, Elmhurst, IL (US);
Assignee:
Economy Engineering Company, Bensenville, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
B66B / ; E04G / ;
U.S. Cl.
CPC ...
182141 ; 182 63 ; 182210 ; 182208 ; 187 / ; 187 11 ;
Abstract
An automatic locking device is provided for a telescoping work platform that includes: a base frame, a middle frame and a platform frame, the locking device comprises a first sliding member mounted in the middle frame, a first notch in the base frame for receiving said first sliding member and a first cam on said platform for disengaging said first member from said first notch, it also comprises a second sliding member mounted to the middle frame, a second notch in the base frame for receiving said second member and a second cam on said base frame for disengaging said second member from said second notch.