Patents Represented by Attorney, Agent or Law Firm Philip G. Myers Intellectual Property Law, P.C.
  • Patent number: 6261027
    Abstract: The present invention provides a portable pulling apparatus suitable for mounting in an exit pit during installation of a pipeline. A portable pulling apparatus of the invention includes an elongated stake having a lower end portion configured for insertion into the ground and an upper end portion. A winch including a pulling cable is mounted on the upper end portion of the stake by a suitable fixture. The winch can then operate to exert a horizontal pulling force on a cable and is secured against movement when the lower end portion of the stake is inserted into the ground. Such a pulling apparatus can be used in a method of installing an underground pipe according to the invention.
    Type: Grant
    Filed: July 7, 1997
    Date of Patent: July 17, 2001
    Assignee: Earth Tool Company L.L.C.
    Inventors: Steven W. Wentworth, Robert F. Crane