Patents by Inventor Douglas B. I. Proctor

Douglas B. I. Proctor 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: 4233925
    Abstract: A plastic paddle of unitary construction defining a hand grip with a wrist engageable portion at one end, and a blade portion at the opposite end, which blade has a tapered cross sectional shape with flanges defined along its marginal edges to achieve maximum strength from a minimum material, and the paddle material itself being formed of plastic to a uniform thickness for economy in manufacture.
    Type: Grant
    Filed: February 21, 1979
    Date of Patent: November 18, 1980
    Inventor: Douglas B. I. Proctor
  • Patent number: 4088088
    Abstract: A rudder assembly for small sailboats with a tiller which extends forwardly of a stock member and which is pivotally connected with a vertical rudder also pivotally connected to the stock member. The tiller pivot is spaced rearwardly and above the stock pivot with the rudder in its lowermost and operative position. An upright peg on the stock member respectively enters fore and aft slots in the tiller with the rudder vertical and swung upwardly to the horizontal, the latter position effected by swinging the tiller upwardly to disengage the peg from the fore slot and thereafter pulling the tiller forwardly and downwardly to enter the peg in the aft slot. A tooth on the tiller between the slots is selectively engageable with notches on the top of the peg to secure the rudder in intermediate positions.
    Type: Grant
    Filed: September 9, 1976
    Date of Patent: May 9, 1978
    Inventor: Douglas B. I. Proctor
  • Patent number: D244592
    Type: Grant
    Filed: October 15, 1975
    Date of Patent: June 7, 1977
    Inventor: Douglas B. I. Proctor