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:
Jul. 22, 1986
Filed:
May. 07, 1985
Applicant:
Inventors:
Leroy L Wittman, Marion, IA (US);
David W Olsen, Palo, IA (US);
Assignee:
FMC Corporation, Chicago, IL (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B66C / ;
U.S. Cl.
CPC ...
212180 ; 212189 ;
Abstract
A centering device for aligning those portions of the swing mechanism, e.g. the swing pinion on the upper with the ring gear on the carrier, to permit the redecking of a crane upper on its carrier, the device including a plurality of sockets on the carrier which are engageable by frustoconical ends on a plurality of pins slidably mounted on the upper. A latch holds the pins in an extended position so that the retraction of the legs supporting the upper above the carrier will cause lateral shifting as necessary to align the swing mechanism.