Prestolite Electric Inc.

Joe K Hammer

Alan H Fitzsimmons

Hans Greutmann

A magnet shield having a recessed area for receiving a demagnetized permanent magnet. The magnet and shield are axially inserted between the armature and cylindrical frame of a motor. Locating legs formed on the end heads between which the cylindrical frame mounts serve to guide and locate the magnet shield into position. After assembly, the demagnetized magnets are magnetized.

Method for retaining a magnet within a motor assembly

An apparatus for detecting the wear of a motor brush includes a spring that biases the brush towards an extended position. A portion of the spring moves along a path towards the extended position as the brush wears, wherein the spring portion makes mechanical contact with a portion of an electrical signal generating device that is disposed in the path to indicate a given amount of brush wear has occurred.

Brush wear indicator

A magnet shield having a recessed area for receiving a demagnetized permanent magnet. The magnet and shield are axially inserted between the armature and cylindrical frame of a motor. Locating legs, formed on the end heads between which the cylindrical frame mounts, serve to guide and locate the magnet shield into position. After assembly, the demagnetized magnets are magnetized.

Growing community of inventors

Bowling Green, OH, United States of America

Joe K Hammer