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. 17, 1980
Filed:
Feb. 06, 1978
Robert N Stedman, Chillicothe, IL (US);
Caterpillar Tractor Co., Peoria, IL (US);
Abstract
A lift mechanism for lift vehicles of a type including an operator's station and a carriage arranged for vertical travel upon a mast assembly. In one embodiment, the lift mechanism includes a lever arrangement, preferably an overhead guard structure, pivotably connected to the vehicle and operatively connected with the carriage by means of a pivotable link. In other disclosed embodiments, the lever mechanism is also an overhead guard structure providing an overhead guard function for the operator station while the mast assembly preferably includes a fixed upright portion and at least one movable upright portion supporting the carriage, the movable overhead guard structure and link being operable to cause vertical travel of both the movable upright portion and carriage. An additional embodiment has the overhead guard lift the movable upright and the short lift cylinder lifts the carriage.