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. 03, 2019
Filed:
Sep. 06, 2016
Swisslog Logistics, Inc., Newport News, VA (US);
Mohan Ramankutty, Mountain House, CA (US);
Christopher Brumm, Ripon, CA (US);
Rodney Tipton, Acampo, CA (US);
Pat Mitchell, Stockton, CA (US);
Swisslog Logistics, Inc., Newport News, VA (US);
Abstract
An apparatus for lifting a load on an automated lifting cart, including a lifting surface vertically movable relative to the lifting cart, two pairs of cams positioned underneath the lifting surface having cam profiles shaped to lift the lifting surface upon rotation of the cams, a pair of encoders reading a rotation property of each pair of cams, and a controller configured to control movement of the pairs of cams by synchronizing the rotation properties of the pairs of cams by matching output from the encoders. Additionally, methods of lifting a load using an automated lifting cart including cams with a movement profile and a load profile, and methods of synchronizing drive shafts in a lifting cart using torque current measurements sent from a lead motor to a lag motor.