With Stepper Propulsion Means Patents (Class 172/352)
  • Patent number: 5214868
    Abstract: An apparatus is disclosed for laying an underground member such as a service wire, tubing or the like. The apparatus includes a frame having a plurality of wheels with a rotatable cutting blade and a fixed cutting blade mounted to the frame for extending below the surface of the ground. The underground member is secured to the fixed cutting blade. An operating handle is pivotably mounted to the frame for rotating the rotatable cutting blade upon a pivoting of the operating handle. A propelling arm is pivotably mounted relative to the operating handle for moving the apparatus over the surface of the ground concomitantly with the rotatable cutting blade and the fixed cutting blade cutting a trench and laying the underground member therein.
    Type: Grant
    Filed: January 27, 1992
    Date of Patent: June 1, 1993
    Inventor: Richard H. Persbacker
  • Patent number: 4042037
    Abstract: The present invention resides in a floor cleaning aid or lawn edging device comprising a shank having a handle portion at one end thereof, a blade member depending from another end of said shank remote from said handle, means projecting from said blade member in a direction transverse to the plane of the blade member and an elongate member pivotally connected at one end thereof to said shank to pivot in a plane substantially parallel to said plane of the blade. Further there is provided a spring connecting said elongate member and said blade member, said spring being adapted to bias said elongate member towards said blade member.
    Type: Grant
    Filed: November 25, 1975
    Date of Patent: August 16, 1977
    Assignee: Marie Ellen Whiteley
    Inventor: William Bede Whiteley