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. 26, 1983
Filed:
Jul. 09, 1980
James G Morrow, Sr, Manitowoc, WI (US);
Michael C Anderson, Manitowoc, WI (US);
The Manitowoc Company, Inc., Manitowoc, WI (US);
Abstract
A ring supported mobile lift crane includes a load carrier and a counterweight carrier in riding contact with the ring and a tower mounted on the carrier for pivotal movement between generally horizontal and vertical positions with a boom pivoted to the outer end of the tower and a rearwardly inclined mast mounted on said carrier and connected to the counterweight carrier by rigging a mast pendant, a tower backstay connected to the top of the tower and through tower hoist rigging to the top of the mast. A fixed boom strut is connected at one end to the top of the tower and at the other end to a fixed pendant secured to the carrier and a movable boom strut is connected at one end to the top of the tower and at the other end to a fixed pendant secured to the outer end of the boom, with a multi-part boom hoist line interconnecting the outer ends of the fixed and movable boom struts for raising and lowering the boom, and a tower erection hoist for changing the length of the tower hoist rigging for raising and lowering the tower, boom, boom struts and tower backstay as a unit.