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:
Sep. 13, 1977
Filed:
Sep. 27, 1976
Arthur S Ellis, Fort Erie, CA;
Blue Giant Equipment Corporation, Buffalo, NY (US);
Abstract
The present disclosure shows a pallet truck of the type wherein an electrically driven pump supplies a hydraulic cylinder with pressure fluid for raising the fork mechanism. For lowering the fork mechanism a dump valve exhausts hydraulic fluid from the cylinder. UP and DOWN push-button switches conventionally control the electric motor and the dump valve, respectively. The apparatus disclosed herein provides an alternate circuit which operates automatically when both push buttons are in their inactive positions and the fork mechanism is fully lowered or nearly fully lowered to raise the fork lift structure automatically a safe distance above the floor, whereupon the auxiliary circuit means becomes inactive.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile