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:
May. 22, 1990
Filed:
Jul. 14, 1989
John E Olson, Portland, OR (US);
Cascade Corporation, Portland, OR (US);
Abstract
A load push-pull slipsheet handler is disclosed having automatic features adapting it particularly for use with driverless, automatically-guided vehicles. These features include proximity sensors which sense the distance between the slipsheet handler and a vertically-oriented external surface so as to deposit a load in a predetermined relationship to the surface either on the floor or atop another load. Load contact sensors also are provided for enabling the device to gauge the distance to a load to be picked up so as to control the approach thereto. Further sensors sense the transversely-opposite extremities of a load prior to engagement, and transversely center the push-pull assembly relative to the load. Other features include a system associated with the slipsheet clamp for sensing the presence or absence of a slipsheet tab prior to clamping, and a device for permanently deforming the tab to facilitate subsequent regrasping after the load has been deposited. A vertical heght sensor ensures proper elevation of the slipsheet handler for depositing a load atop another load.