公开(公告)号：US3593952A

公开(公告)日：1971-07-20

申请号：US3593952D

申请日：1969-11-13

Applicant: DYNAPOWER SYSTEMS CORP OF CALL

Inventor： SMITH JAMES ROBERT

IPC: A61N5/01 ,  A61N5/06 ,  F16L27/00

CPC classification number: A61N5/01 ,  A61N5/06 ,  Y10T403/32557 ,  Y10T403/32827

Abstract: An articulated arm structure is supported by a cabinet and supports an electrotherapeutic treatment head; the arm structure includes first and second cup-shaped joint members interconnected to define a horizontal axis of relative rotation; a first torsion spring extends within the members to yieldably resist arm structure articulation while blocking collapse of the arm structure and head when projecting generally horizontally; and there may be third and fourth cup-shaped joint members connected to define another horizontal axis of rotation, and containing a second torsion spring connected to yieldably resist arm structure articulation while blocking collapse of the arm structure and head when projecting generally horizontally.