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:
Jan. 19, 1993
Filed:
Apr. 18, 1991
Ruth A Hendrickson, Lincoln, MA (US);
Brooks Automation, Inc., North Billerica, MA (US);
Abstract
An articulated arm transfer device employs a rhomboidal link structure defined by two separated pairs of forearms pivotally joined at the elbows and at the wrists. Each wrist supports a holding structure and the elbows are driven in mirror-image semicircular paths by a pair of upper arms which are superimmposed alternately under each pair of forearms as the upper arms are rotated about mutually adjacent shoulder joints. The motion is such that at any time one holding structure is moving rapidly between an extended position and a park position while the other holidng structure is slowly traveling a negligible distance between a park position and a retracted position.