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. 05, 1990
Filed:
Mar. 30, 1989
Applicant:
Inventor:
Morris D Robinson, Redondo Beach, CA (US);
Assignee:
Waltco Truck Equipment Co., Inc., Gardena, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60P / ;
U.S. Cl.
CPC ...
414557 ; 414917 ;
Abstract
A platform lift mountable to a vehicle, which includes a platform that can remain horizontal while lifting and can tilt to faciltate loading and unloading of the platform. The lift includes a linkage pivotally mounted to the base frame, and the linkage includes a base leg, a platform leg, a lift arm, and a reference arm. In a lift/lower mode the legs and the arms form a parallelogram system that will maintain the platform in a level horizontal arrangement. In a tilt mode, the upper arm is extensible in order to change the geometry from a parallelogram to a quadrilateral with equal legs and unequal arms.