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:
Sep. 04, 1984
Filed:
Feb. 28, 1983
Virgil M Pontes, N. Dighton, MA (US);
Double E Company Inc., Brockton, MA (US);
Abstract
An expansible shaft with an actuator having a bore through which the operating rod extends, and, adjacent one end of the actuator, a surface inclined relative to the rod which at least partially defines a recess extending radially outward of the bore. A retaining member is mounted in a recess in the outer surface of the rod in position for engaging the surface of the actuator recess so that, when the actuator is forced relative to the rod towards the retaining member, interaction between the retaining member and the surface of the actuator recess causes application of a radially inwardly directed force on the retaining member. A bearing surface at one axial end of the operating rod is defined by a portion of the exterior of a sphere and a drive screw engages and is arranged to apply force to the bearing surface.