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. 02, 1981
Filed:
Nov. 14, 1979
Applicant:
Inventor:
Gerald P Berger, Cedar Rapids, IA (US);
Assignee:
FMC Corporation, San Jose, CA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B66C / ; B66C / ;
U.S. Cl.
CPC ...
212222 ; 212153 ;
Abstract
A crane has a rotatable body with a vertically pivotal boom connected thereto. An energy absorbing stop unit is mounted in a fixed position on the body, and a guide sleeve is pivotally mounted on the body adjacent the stop unit. A stop rod is pivotally connected to the boom at a point between the ends of the boom for vertical swinging movement, and the rod is maintained in the guide sleeve in every position of the boom. The guide sleeve is pivoted by the stop rod into alignment with the stop unit at the extreme upper position of the boom, and, at that position of the boom, the stop rod extends through the guide sleeve into engagement with the stop unit.