Patents by Inventor Donald S. Stephens

Donald S. Stephens 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: 4673165
    Abstract: A weed puller is provided which comprises a handle to which are separately attached two (2) rotating, weed grasping prongs. The lower, or ground penetrating, portion of each prong is offset from the top portion thereof, so that when the prongs are rotated about their individual separate vertical axes at the handle, the lower portions of the prongs approach each other in parallel orientation so as to grasp the weed and its roots with essentially evenly applied pressure. The prong rotation is achieved through outward movement of upper ends of the prongs in camming slots formed in a camming member. Such movement is created by pivoting the handle of the weed puller, with the prongs inserted in the ground astraddle the weed, toward an outwardly extending lever member which is rotatingly attached along a horizontal axis at the lower end of the handle, and is rigidly connected to or an extension of the camming member. Continued pivoting of the handle leverages the grasped weed from the ground.
    Type: Grant
    Filed: April 14, 1986
    Date of Patent: June 16, 1987
    Inventors: Ralph F. Nelson, Donald S. Stephen
  • Patent number: 4082916
    Abstract: An electrical inductive apparatus encapsulated in a cured mixture of rounded gravel particles and resin-coated sand particles and covered with a layer of non-porous sealant material. A method of encapsulating an electrical inductive apparatus in which resin-coated sand particles are vibrated into a quantity of gravel particles which fill the space between the enclosure and the electrical inductive apparatus. A layer of sealant material is then added before the entire apparatus is subjected to an elevated temperature which cures the resin and forms an infusible, intersticial mass of gravel and sand particles around the electrical inductive apparatus.
    Type: Grant
    Filed: December 16, 1976
    Date of Patent: April 4, 1978
    Assignee: Westinghouse Electric Corporation
    Inventors: Albin Jaklic, Jr., Donald S. Stephens