Patents by Inventor Harold M Pardey

Harold M Pardey 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).

  • Detachable latch head for core drilling
    Patent number: 8272457
    Abstract: A latch head assembly for a core receiving apparatus including a core tube assembly and a retrieving head is provided. The latch head assembly includes a support, a first coupling for releasably engaging the retrieving device coupled to a first end of the support, and a second coupling for releasably engaging the core tube assembly coupled to a second end of the support. A core receiving apparatus including the latch head assembly is also provided. A method for inserting and retrieving the core receiving apparatus into and from a drill string is also provided.
    Type: Grant
    Filed: March 16, 2009
    Date of Patent: September 25, 2012
    Inventor: Harold M Pardey
  • TOGGLE OVERSHOT
    Publication number: 20090242203
    Abstract: An overshot includes a sleeve. A coupling member having a latched state and an unlatched state is disposed at a first end of the sleeve. A load-responsive toggle mechanism for alternating the coupling member between the latched state and the unlatched state is disposed at a second end of the sleeve.
    Type: Application
    Filed: March 30, 2009
    Publication date: October 1, 2009
    Inventor: Harold M. Pardey
  • DETACHABLE LATCH HEAD FOR CORE DRILLING
    Publication number: 20090229884
    Abstract: A latch head assembly for a core receiving apparatus including a core tube assembly and a retrieving head is provided. The latch head assembly includes a support, a first coupling for releasably engaging the retrieving device coupled to a first end of the support, and a second coupling for releasably engaging the core tube assembly coupled to a second end of the support. A core receiving apparatus including the latch head assembly is also provided. A method for inserting and retrieving the core receiving apparatus into and from a drill string is also provided.
    Type: Application
    Filed: March 16, 2009
    Publication date: September 17, 2009
    Inventor: Harold M. Pardey