Abstract: A drill chuck having a cylindrical sleeve connected to its bevel gear element and a rearward part of the sleeve being rotatable on a cylindrical portion of the chuck body, the chuck body being formed with a number of localized swellings at the surface of the cylindrical portion to retain the sleeve in position, the swellings having been formed by plastic deformation of the metal of the body part.
Type:
Grant
Filed:
January 31, 1986
Date of Patent:
August 4, 1987
Assignee:
The Jacobs Manufacturing Company, Limited
Abstract: An improvement in a pressure relief device of the type used in a power transformer, the improvement consisting of a flat circular gasket fixedly mounted about its inner periphery, and having its outer periphery flexibly arranged for wiping contact with the inner surface of a cup-like valve member.