Patents Assigned to Bert William Piper
  • Portable key seat cutter for shafts
    Patent number: 4289434
    Abstract: The key seat cutter consists of a portable frame adapted to be clamped on a shaft and having a cutter and a cutter drive mechanism mounted on a slide reciprocable on the frame by a manually rotatable lead screw. The input to the drive mechanism consists of a stub shaft adapted to be connected with the chuck of an electrical hand drill.
    Type: Grant
    Filed: September 24, 1979
    Date of Patent: September 15, 1981
    Assignee: Bert William Piper
    Inventor: Bert W. Piper
  • Portable key seat cutter
    Patent number: 4284377
    Abstract: The key seat slotter has a shank on which a pulley is adapted to be clamped. A broaching blade is slidable in a groove on the shank through the bore of the pulley. The key seat is cut in the pulley bore by manually pivoting a handle to effect repeated strokes of the broaching blade. The depth of the cut is progressively increased to the desired depth of the slot between successive strokes of the blade by incremental advancement of a tapered feed bar in the groove on the shank on which the broaching blade is slidably mounted.
    Type: Grant
    Filed: September 24, 1979
    Date of Patent: August 18, 1981
    Assignee: Bert William Piper
    Inventor: Bert W. Piper
  • Vehicle antenna
    Patent number: 4243989
    Abstract: A vehicle antenna rod has a ball at its lower end mounted for universal pivoting movement on a base. The ball is retained on the base by a cap through which the antenna rod extends. The cap is freely rotatable in a horizontal plane on the base and has a plurality of circumferentially spaced slots extending down from its upper end for enabling the antenna rod to swivel to a generally horizontal position closely adjacent the support surface on which the base is mounted.
    Type: Grant
    Filed: October 29, 1979
    Date of Patent: January 6, 1981
    Assignee: Bert William Piper
    Inventor: Bert W. Piper