Motor assembly

An assembly useful for winding and unwinding an elongated article located at least partially within a gage head housing comprising:

• a drum rotatable to wind a quantity of elongated article therearound or to unwind a quantity of elongated article therearound;
• a hub removably secured to said drum so that said drum rotates in response to rotation of said hub, said hub including a first outer surface adapted to face toward said drum and a second outer surface adapted to face away from said drum;
• a motor comprising a spring element having a first end secured to said hub and being in aligned position relative to said hub to be wound around said hub between said first and second outer surfaces to apply a force to said hub which force urges said hub to rotate;
• and
• a housing adapted to be removably secured to said gage head housing and in which said second outer surface and at least a portion of said motor are located, said housing when secured to said a gage head housing holding said hub and said motor in aligned position without substantial frictional contact with said first and second outer surfaces of said hub and holding said hub and said motor in general alignment when located outside said gage head housing.

A motor assembly useful for rotating a drum within a gage head housing comprising:

• a hub adapted to be removably secured to the drum so that the drum rotates in response to rotation of said hub, said hub including a first flange which includes a first outer surface adapted to face toward the drum and a spaced apart second flange which includes a second outer surface adapted to face away from the drum, said first and second flanges being joined together by a joining member around which a spring element is positioned to be wound;
• a motor comprising said spring element having a first end secured to said hub and being in aligned position relative to said hub to be wound around said hub between said first and second outer surfaces to apply a force to said hub which force urges said hub to rotate;
• and
• a housing adapted to be removably secured to said gage head housing and in which said second flange and at least a portion of said motor are located, said housing when secured to said gage head housing holding said hub and said motor in aligned position without substantial frictional contact with said first and second outer surfaces of said hub and holding said hub and said motor in general alignment when located outside said gage head housing, said housing including a plurality of projections extending into the space defined by said first and second flanges and said joining member.

A motor assembly useful for rotating a drum in a gage head housing comprising:

• a hub adapted to be removably secured to the drum so that the drum rotates in response to rotation of said hub, said hub including a first outer surface adapted to face toward the drum and a second outer surface adapted to face away from the drum;
• a motor comprising a spring element having a first end secured to said hub and being in aligned position relative to said hub to be wound around said hub between said first and second outer surfaces to apply a force to said hub which force urges said hub to rotate;
• a housing adapted to be removably secured to said gage head housing and in which said second outer surface and at least a portion of said motor are located, said housing when secured to said gage head housing holding said hub and said motor in aligned position without substantial frictional contact with said first and second outer surfaces of said hub and holding said hub and said motor in general alignment when located outside said gage head housing;
• and
• locking means including a pin-like element, a hole in said housing and at least one hole in said hub, said holes being alignable and said pin-like element being adapted to be inserted into said aligned holes to lock said spring element against unwinding.