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:
Jan. 04, 2000
Filed:
Apr. 03, 1997
David J Pech, Manitowoc, WI (US);
Manitowoc Crane Group, Inc., Reno, NV (US);
Abstract
A swing lock mechanism for machines having an upper works rotatably mounted on a lower works by a swing bearing is connected to the drive shaft of a swing bearing drive assembly and comprises a swing lock plate, an annular pin support, and a plurality of locking pins. The swing lock plate is affixed to the drive shaft and has at least one hole disposed about the axis of the drive shaft. The annular pin support is fixed against rotation relative to the drive shaft is disposed about the axis of the drive shaft. The locking pins are supported by the annular pin support and are also disposed about the axis of the drive shaft. The locking pins are arranged in such a manner so as at least one pin may engage a hole in the swing lock plate irrespective of the angular orientation of the swing lock plate relative to the annular pin support.