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. 03, 1980
Filed:
Oct. 26, 1978
John E Olson, Portland, OR (US);
Cascade Corporation, Portland, OR (US);
Abstract
A load push-pull assembly for a lift truck having a main frame and a tiltable load-supporting frame. The push-pull assembly comprises a push frame connected by a selectively extensible and retractable linkage to a rear mounting frame which does not tilt in unison with the tiltable load-supporting frame but rather maintains a constant angular attitude with respect to the truck-supporting surface regardless of the tilting attitude of the load-supporting frame. The linkage maintains the push frame in a constant angular attitude with respect to the rear mounting frame such that the push frame is maintained perpendicular with respect to the truck-supporting surface during the tilting of the load-supporting frame. The push frame is freely movable vertically with respect to the rear mounting frame, and is supported vertically by the tiltable load-supporting frame, such that it moves vertically with a rectilinear motion in response to the tilting movement of the load-supporting frame without changing its angular attitude with respect to the truck-supporting surface. A slip sheet clamp is mounted on the bottom of the push frame such that both jaws of the clamp move vertically in unison with the vertical movement of the push frame.