Patents by Inventor John Howard Stewart

John Howard Stewart 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: 20090081090
    Abstract: There is provided an apparatus for sterilizing medical or dental instruments. The apparatus comprises a sterilizing unit, a cassette for holding the instruments within the unit during sterilization and pressure housing removably attached to the sterilizing unit to receive the cassette during use. The pressure housing is configured to be releasably connectable to the sterilizing unit to permit the efficient coupling and de-coupling of the pressure housing to steam delivery means, exhaust means and control means of the sterilizing unit.
    Type: Application
    Filed: September 26, 2007
    Publication date: March 26, 2009
    Inventors: Jeffrey G. Dayman, Christopher John Howard Stewart
  • Patent number: 7111374
    Abstract: Improved drilling and pinning machines and methods for processing elongate flexible e.g. rubber strips of seal material for forming seals about openings. The machines and methods form precisely positioned holes in the rubber strip, and insert pins in the holes. Opposing ends of the pins are ultimately received in cooperating holes in the opening, mounting the seal strip to the opening. Machines and methods of the invention temporarily fix a strip or portion of the seal material to a rigid component of the machine. While the seal material is fixedly held, first and second holes are formed in general alignment with the length of the strip, or a subsequent hole is formed wherein location of the subsequent hole is based on location of a previously-formed hole. The formed holes and/or inserted pins are automatically inspected. The inspection information is forwarded to, and used by, the machine controller.
    Type: Grant
    Filed: April 1, 2003
    Date of Patent: September 26, 2006
    Inventor: John Howard Stewart
  • Publication number: 20030188425
    Abstract: Improved drilling and pinning machines and methods for processing elongate flexible e.g. rubber strips of seal material for forming seals about openings. The machines and methods form precisely positioned holes in the rubber strip, and insert pins in the holes. Opposing ends of the pins are ultimately received in cooperating holes in the opening, mounting the seal strip to the opening. Machines and methods of the invention temporarily fix a strip or portion of the seal material to a rigid component of the machine. While the seal material is fixedly held, first and second holes are formed in general alignment with the length of the strip, or a subsequent hole is formed wherein location of the subsequent hole is based on location of a previously-formed hole. The formed holes and/or inserted pins are automatically inspected. The inspection information is forwarded to, and used by, the machine controller.
    Type: Application
    Filed: April 1, 2003
    Publication date: October 9, 2003
    Inventor: John Howard Stewart