Patents by Inventor Erwin H. Stielow

Erwin H. Stielow 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).

  • Ratchet wrench
    Patent number: 5050463
    Abstract: An offset ratchet wrench for loosening and tightening nuts connecting copper tubing to faucet connections comprises a wrench body portion having a circular hole extending through it, the wrench body portion having a passageway or gap portion between the circular hole and an outer front side portion of the wrench body portion, the wrench body portion having a recess in its top surface next to and in partial contact with the circular hole, a pawl mechanism mounted on the body portion inside the recess, a nut driver having a hole extending through the nut driver from its top to its bottom, the nut driver having an upper portion and lower portion, the hole through the nut driver in the nut driver upper portion having a hexagonal-shaped periphery for engaging the nut, the lower portion of the nut driver having a substantially circular outer periphery and having a row of teeth encircling its outer periphery that are engaged by the pawl when the lower portion of the nut driver rests inside the circular hole of the w
    Type: Grant
    Filed: May 24, 1990
    Date of Patent: September 24, 1991
    Inventor: Erwin H. Stielow
  • Ratchet wrench
    Patent number: 4928559
    Abstract: An offset ratchet wrench for loosening and tightening nuts connecting copper tubing to faucet connections comprises a wrench body portion having a circular hole extending through it, the wrench body portion having a passageway or gap portion between the circular hole and an outer front side portion of the wrench body portion, the wrench body portion having a recess in its top surface next to and in partial contact with the circular hole, a pawl mechanism mounted on the body portion inside the recess, a nut driver having a hole extending through the nut driver from its top to its bottom, the nut driver having an upper portion and lower portion, the hole through the nut driver in the nut driver upper portion having a hexagonal-shaped periphery for engaging the nut, the lower portion of the nut driver having a substantially circular outer periphery and having a row of teeth encircling its outer periphery that are engaged by the pawl when the lower portion of the nut driver rests inside the circular hole of the w
    Type: Grant
    Filed: November 9, 1987
    Date of Patent: May 29, 1990
    Inventor: Erwin H. Stielow