Patents by Inventor John Cliff

John Cliff 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).

  • Publication number: 20100249703
    Abstract: A sterilizable vacuum handpiece that may include a base unit reversibly coupled to a handle unit, having a central vacuum passage connecting proximal and distal ends. A hand-removable base unit valve may divide a base unit vacuum passage and a hand-removable handle unit valve may separate a handle unit vacuum passage, in adjustable fluid communication with each other. The valves may be retained within bores and counter-bores, and may achieve fluid-tight fit with O-rings retained within the valves. The valves may have vacuum passages with surface areas greater than or equal to a least diameter of the vacuum passage containing the valve. In at least one embodiment, the handle valve is releasably retained by the opposing ends of a “bucket-handle” shaped controller. Alternatively, the handpiece may be formed as a single combined unit, where the terms base unit and handle unit refer only to regions of an otherwise unified structure.
    Type: Application
    Filed: March 27, 2009
    Publication date: September 30, 2010
    Inventor: John A. Cliff
  • Patent number: 6155919
    Abstract: An apparatus and method for removing loins from pork bellies to result in a high yield of loin in a two-step method, the first step involving the removal of the loin and the second step involving the skinning of the loin portion removed. A unique knife shaped in the form of a Z is used to cut all the way through the belly. Once complete, the skin from the belly remains on the loin and is subsequently run through a loin skinner in a controlled cutting process that significantly reduces the chance of cutting below the loin fat and into the muscle.
    Type: Grant
    Filed: November 19, 1998
    Date of Patent: December 5, 2000
    Assignee: Swift & Company
    Inventors: Peter Haagensen, Bruce Johnson, John Cliff
  • Patent number: 5989116
    Abstract: A meat slicing apparatus is disclosed, wherein the apparatus is capable of high-speed slicing of meat having large skeletal bones therein. The apparatus has a blade composed of a steel alloy that is approximately 5 to 10 times greater in compression strength than typical steel. The blade has an involute shape for withstanding the stresses incurred when slicing through bones having compression near that of steel, e.g., pork loin bones. The meat slicer includes a mechanism for securing a position of a meat section to be sliced so that the meat section stays in place during a slicing process, thereby reducing the risk of misalignment of the meat section with the blade. Thus, without such misalignments, there is a reduction in blade failures, shattered bones, bone fragments, and bone dust. Also, the securing mechanism reciprocates between securing the meat section for slicing and releasing it sufficiently for indexing toward the blade between slicing operations.
    Type: Grant
    Filed: February 3, 1998
    Date of Patent: November 23, 1999
    Assignee: Swift & Company, Inc.
    Inventors: Bruce A. Johnson, John Cliff
  • Patent number: 5241797
    Abstract: A floor for a water tank on a tank support tower is made of a dome of steel bar-reinforced concrete over a lower steel base in a central portion encircling a center access tower, the dome being surrounded by and continuous with an annular rim also of concrete reinforced with steel bars but over a circular steel beam at the base of the dome. Studs are welded from the concrete area into the steel base and the steel beam.
    Type: Grant
    Filed: November 9, 1992
    Date of Patent: September 7, 1993
    Inventor: John Cliff