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. 08, 1993
Filed:
Jul. 31, 1992
Applicant:
Inventor:
Jeffrey S McNamara, Grosse Ile, MI (US);
Assignee:
Litton Industrial Automation Systems, Inc., Florence, KY (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B25J / ;
U.S. Cl.
CPC ...
74469 ; 74106 ; 414680 ; 901 15 ; 901 27 ;
Abstract
A device with a pivoting work arm for carrying and positioning a tool which is moved by a modified Watts linkage powered by a linear actuator having a true straight line motion. The modified Watts linkage has relatively short links resulting in the center of the middle link following an arcuate path. The center of the middle link is drivingly connected to the linear actuator by a pivoting link or a cam. To provide shock absorption for the work arm as it reaches its fully extended position, the modified Watts linkage is coupled to a follower arm yieldably biased by a spring.