Patents by Inventor David G. Sheriff

David G. Sheriff 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: 5921596
    Abstract: A kitty litter scooper that allows users to clean out litter boxes without having to stoop and bend over, and allows users to move litter boxes without having to physically touch the litter box. The scooper includes a telescoping long handle that attaches to a receptacle by an adjustable swivel connection that allows the handle to be fixed to the receptacle at different angles. The receptacle has parallel slot apertures that are sized to allow granular materials such as sand and pet litter but nothing larger to pass therethrough. The receptacle includes a rear hook portion which can be used to hook over or under an edge of a litter box to move the litter box from underneath tables, furniture and the like. The receptacle further has an extended planar lip portion having a raised wedge thereon which helps keep clump contents within the receptacle.
    Type: Grant
    Filed: June 6, 1997
    Date of Patent: July 13, 1999
    Inventors: David G. Sheriff, Carolyn L. Sheriff
  • Patent number: 4886014
    Abstract: This invention is a simple, easy to use, self-cleaning pet litter box that separates reusable litter material from solid pet droppings. This task is accomplished through the use of swelled-out chutes strategically formed along the litter box walls combined with a trough-shaped, wire mesh separator that is also built into the litter box. A hole is cut in the side wall adjacent to the wire separator with a tubular-shaped protrusion extending from the outside of this hole in the wall. By using a tilting, rotating motion, the used litter is passed through the chutes in the walls and into the wire mesh separator. The solid pet waste is trapped in the separator while the still usable litter is filtered through. With one final tilt, the solid waste is dumped through the hole in the wall, through the tubular protrusion, and into an attached disposable plastic bag.
    Type: Grant
    Filed: August 24, 1988
    Date of Patent: December 12, 1989
    Inventor: David G. Sheriff
  • Patent number: 4744380
    Abstract: Improved apparatus for disposing of fecal matter with pressurized water. The apparatus includes a chamber which covers animal remains and a screen mesh which separates the remains into small pieces sufficient for rapid dissolving under the chamber with a water spray.
    Type: Grant
    Filed: February 24, 1987
    Date of Patent: May 17, 1988
    Inventor: David G. Sheriff