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. 19, 1982
Filed:
May. 16, 1979
Carroll H Arnold, Westminster, MA (US);
Wain-Roy, Inc., Hubbardston, MA (US);
Abstract
A system including a hitch adapted for pivotal connection to a boom or dipperstick and including a downwardly projecting hook, and cooperating structure secured to a materials handler and having a cross-member for engaging the hook. A bearing plate secured to the body of the hitch above the hook defines a downwardly-facing bearing surface and engages an upwardly-facing bearing surface secured to the materials handler cooperating structure. In one embodiment, the hitch and materials handler are relatively rotatable about a pin assembly which both connects the relatively rotatable hitch portions and forms the hydraulic cylinder carrying a piston controlling a locking pin.