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:
Apr. 04, 1989
Filed:
Aug. 25, 1987
Applicant:
Inventor:
Bruce S Johnson, Burbank, CA (US);
Assignee:
Harsco Corporation, Wormleysburg, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B66C / ;
U.S. Cl.
CPC ...
414686 ; 212189 ; 414547 ; 414550 ; 414688 ; 414705 ;
Abstract
A crane has a twin post and a twin boom construction and provides for numerous degrees of freedom. The crane is a trailer and uses the weight of a vehicle to which it is attached for stability when it is in an operating mode. The crane has wheels which may be lifted off the ground to allow its positioning by a vehicle to which it is attached.