Patents by Inventor Carl W. Brandenfels

Carl W. Brandenfels has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4750578
    Abstract: A chassis member with rear wheels and a battery compartment has a detachable connection with an upright front wheeled support. The front wheeled support has a steering handle assembly pivotally connected thereto which can be locked in upright position or swung rearwardly into a folded position parallel with the front wheeled support, or pivoted forwardly for use as a dolly-type handle. An electric motor is mounted on the front wheeled support and has lead wires to the battery and to a switch operated by a belt tightener providing driving power when a hand lever is depressed but providing free wheeling when the lever is released. The lead wires for the battery are of a length and have disconnects which allow the battery to be carried on the person if desired. The cart is adapted to receive a removable seat and when knocked down consists of the chassis member, the front wheeled support, the battery, and the seat if the latter is used.
    Type: Grant
    Filed: January 12, 1987
    Date of Patent: June 14, 1988
    Inventor: Carl W. Brandenfels
  • Patent number: 4332046
    Abstract: The handle of a hammer has a recess at the free end and one or more spirit levels are embedded in a plastic filler in the recess. The spirit levels are associated with surface engaging points on the hammer, comprising points on the striking head portion of the hammer or on a side of the head in combination with a bottom or side point at the free end of the handle. Spirit levels, including a bullseye level, are provided to accomplish horizontal leveling in two directions and also in a vertical direction. The bottom surface of the recess is painted a contrasting color for easy viewing of the spirit levels, and interengaging tongues and recess extensions are provided for locking the plastic filler in its recess.
    Type: Grant
    Filed: August 11, 1980
    Date of Patent: June 1, 1982
    Inventors: Clifford T. Foley, Carl W. Brandenfels