Patents Assigned to John W. Sterrenberg
  • Patent number: 4402141
    Abstract: A leveling mechanism having bubble levels is removably attachable to a hand-held power drill. In one form, the leveling mechanism includes a drive shaft coupled between the drill and a chuck for rotation therewith. The drive shaft is rotatably mounted to a support, and the support is held stationary relative to the drill housing. The support may include first and second surfaces parallel and perpendicular, respectively, to the axis of rotation of the drive shaft for supporting first and second bubble levels. Alternatively, the support may include a support plate and a level plate hinged thereto for supporting one or more bubble levels; a grooved alignment plate engages the edges of the support plate and level plate for maintaining a predetermined angular relationship therebetween. In another form, the leveling mechanism is removably attached to the front face of the drill housing.
    Type: Grant
    Filed: April 5, 1982
    Date of Patent: September 6, 1983
    Assignee: John W. Sterrenberg
    Inventor: John W. Sterrenberg
  • Patent number: 4393599
    Abstract: A leveling mechanism having bubble levels is removably attachable to a hand-held power drill. In one form, the leveling mechanism includes a drive shaft coupled between the drill and a chuck for rotation therewith. The drive shaft is rotatably mounted to a support, and the support is held stationary relative to the drill housing. The support may include first and second surfaces parallel and perpendicular, respectively, to the axis of rotation of the drive shaft for supporting first and second bubble levels. Alternatively, the support may include a support plate and a level plate hinged thereto for supporting one or more bubble levels; a grooved alignment plate engages the edges of the support plate and level plate for maintaining a predetermined angular relationship therebetween. In another form, the leveling mechanism is removably attached to the front face of the drill housing.
    Type: Grant
    Filed: September 2, 1980
    Date of Patent: July 19, 1983
    Assignee: John W. Sterrenberg
    Inventor: John W. Sterrenberg