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. 30, 1995
Filed:
Mar. 01, 1993
Sun-Lai Chang, Hyattsville, MD (US);
United Parcel Service of America, Inc., Atlanta, GA (US);
Abstract
A semi-active compliance device forms part of a robot used to stack packages. The semi-active compliance device has an X-Y motion mechanism and a remote center compliance mechanism. The X-Y motion mechanism provides active open-loop control of the forces of a package along the X and Y axes so that the X- and Y-axis positions of the package will be passively controlled by the environment (e.g., walls and/or adjacent stacks of packages). The X-Y motion mechanism has two linear actuators and two pantographs. The remote center compliance mechanism provides passive orientation of the package about the Z axis. The semi-active compliance device also has a mechanism to return the remote center compliance mechanism to a home position.