Patents Assigned to Energenic Propulsions, Ltd.
  • Patent number: 4300784
    Abstract: An oscillating pedal type bicycle is provided with a pedal lever having a front pedal supporting portion and a rear power transmitting portion which are rigidly connected together and which make an oblique angle with respect to one another, with the apex of the oblique angle pointing downwardly and to the rear in the intermediate position of the pedal levers. The two pedal levers each have an intermediate pivot point which is generally under the seat of the bicycle, with the rear end of the pedal lever near the driving hub of the bike and the front end of the pedal lever supporting pedals and being located close to the position of the pedals in a conventional bike during the power stroke. The front portion of the pedal lever between the pivot point and the pedal may be bent to increase the length of the stroke.
    Type: Grant
    Filed: May 4, 1979
    Date of Patent: November 17, 1981
    Assignee: Energenic Propulsions, Ltd.
    Inventor: Boris Efros
  • Patent number: 4272096
    Abstract: An oscillating pedal type bicycle is provided with a pedal lever having a front pedal supporting portion and a rear power transmitting portion which are rigidly connected together and which make an oblique angle with respect to one another, with the apex of the oblique angle pointing downwardly and to the rear in the intermediate position of the pedal levers. The two pedal levers each have an intermediate pivot point which is generally under the seat of the bicycle, with the rear end of the pedal lever near the driving hub of the bike and the front end of the pedal lever supporting pedals and being located close to the position of the pedals in a conventional bike during the power stroke. The power ratio of the bike may be varied by varying the position of the driving chain belt or other flexible member connected to the bicycle hub along the length of the rearwardly extending portion of each of the pedal levers.
    Type: Grant
    Filed: February 21, 1978
    Date of Patent: June 9, 1981
    Assignee: Energenic Propulsions, Ltd.
    Inventor: Boris Efros