Patents by Inventor Donald L. Motrenec

Donald L. Motrenec 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: 5516133
    Abstract: A steering stabilizer for bicycles utilizing a hydraulic fluid. A stabilizer body is secured to the frame of the bicycle. The stabilizer body has a hydraulic reservoir which is in the shape of an arc. A vane is supported by the stem of the bicycle which turns with the handlebars and the arcuate shaped opening is filled with a hydraulic fluid. As the handlebars are turned, the stem turns the stem vane and produces a resistance to turning. Preferably this resistance is variable by the placement of a valve between the two volumes on each side of the stem vane.
    Type: Grant
    Filed: August 4, 1994
    Date of Patent: May 14, 1996
    Assignee: Stabletec, Inc.
    Inventors: Donald L. Motrenec, Ronald A. Motrenec
  • Patent number: 4736962
    Abstract: A steering stabilizer for handlebar controlled vehicles. The stabilizer utilizes a steering column housing having a cylindrical chamber therein. The steering column passes through the axial center of the chamber and hydraulic fluid is held within the chamber. A piston or vane is moved by the turning of the steering column and forces the hydraulic fluid through a restricted passageway whereby the turning of the handle bars is viscously damped.
    Type: Grant
    Filed: March 21, 1986
    Date of Patent: April 12, 1988
    Inventor: Donald L. Motrenec
  • Patent number: 4566712
    Abstract: A steering stabilizer for vehicles of the type having a steerable front wheel or wheels. The stabilizer is positioned in the steering column housing and frame member which is affixed to the frame of the vehicle. The steering column has a threaded portion within the steering column housing and frame member and a piston is threadably held on the threaded portion and moves longitudinally as the wheel is turned. The piston is sealingly held within an oil filled chamber and, as the front wheel is turned, the oil is forced through a passageway thereby damping the turning movement of the front wheel or wheels. Preferably, the size of the passageway is adjustable from the exterior of the stabilizer.
    Type: Grant
    Filed: December 12, 1984
    Date of Patent: January 28, 1986
    Inventor: Donald L. Motrenec
  • Patent number: 4558878
    Abstract: An improved all terrain cycle having a single front steerable wheel mounted on a pivotable frame having a steering stabilizer affixed thereto. The steering stabilizer is a damper assembly which has a piston held within a fluid filled cylinder linked to the frame of the cycle at one end and to the frame of the steering assembly at the other end. The resulting cycle is much easier to control because rapid movement of the handlebars which occurs when the front wheel hits rough terrain is effectively eliminated.
    Type: Grant
    Filed: September 23, 1983
    Date of Patent: December 17, 1985
    Inventor: Donald L. Motrenec