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:
Oct. 17, 2000
Filed:
May. 28, 1997
Daniel L Harrington, Lexington, KY (US);
Link-Belt Construction Equipment Co, Lexington, KY (US);
Sumitomo Construction Machinery, Lexington, KY (US);
Abstract
A connecting system for aligning the fly lug of a strut on a boom extension for connection to the boom head shaft of a crane boom. The apparatus includes an offset jack screw extending through a threaded aperture in the boom head shaft parallel to the strut of the boom extension and a laterally extending tab affixed to the fly lug. The jack screw has a swivel pad at the head that contacts the tab. Manual adjustment to the jack screw is operative to move the lug so that a hole for a pin aligns with a mating hole in the head shaft. The face portion of the swivel pad universally mates with the operative face of the tab that extends at a 10.degree.-15.degree. angle normal to the axis of the strut to cancel the induced turning moment caused by the offset of said jack screw.