Patents by Inventor Don Crane

Don Crane 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).

  • Plunger apparatus
    Patent number: 9970271
    Abstract: A plunger apparatus may include an upper cylindrical section, a plurality of through-holes, an elongated body, and a lower cylindrical section. The plurality of through-holes may be circumferentially arranged about the upper cylindrical section to provide passages for venting and releasing particulates that clog the plunger and barrel seal area. Further, the plunger apparatus may provide an undersized area circumferentially disposed about the upper cylindrical section for creating a point of relief and inducing swirling of particulates. An oversized area may also be provided for creating a point of increased pressure about the plunger apparatus.
    Type: Grant
    Filed: July 20, 2015
    Date of Patent: May 15, 2018
    Inventor: Don Crane
  • PLUNGER APPARATUS
    Publication number: 20170022987
    Abstract: A plunger apparatus may include an upper cylindrical section, a plurality of through-holes, an elongated body, and a lower cylindrical section. The plurality of through-holes may be circumferentially arranged about the upper cylindrical section to provide passages for venting and releasing particulates that clog the plunger and barrel seal area. Further, the plunger apparatus may provide an undersized area circumferentially disposed about the upper cylindrical section for creating a point of relief and inducing swirling of particulates. An oversized area may also be provided for creating a point of increased pressure about the plunger apparatus.
    Type: Application
    Filed: July 20, 2015
    Publication date: January 26, 2017
    Inventor: Don Crane