04527942 is referenced by 54 patents and cites 20 patents.

A system for positioning an electronic test head of a test system with respect to an electronic device handler. A housing is provided having a vertical shaft. A positioner assembly moves vertically with respect to the shaft and provides substantial movement in the horizontal plane with six degrees of freedom. The positioner assembly includes a section for attaching the test head. A counterbalancing assembly is coupled to the positioner assembly and has a counterweight to provide a substantially weightless condition to the positioner assembly with the test head attached.

Title
Electronic test head positioner for test systems
Application Number
6/411311
Publication Number
4527942
Application Date
August 25, 1982
Publication Date
July 9, 1985
Inventor
Nathan R Smith
Vincentown
NJ, US
Agent
Ratner & Prestia
Assignee
InTest Corporation
NJ, US
IPC
B25J 1/12
View Original Source