Patents by Inventor Margaret Jenkinson

Margaret Jenkinson 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).

  • Glassware grinding and/or polishing apparatus
    Patent number: 4872290
    Abstract: A glass grinding and/or polishing apparatus comprises a chuck which holds a glass to be repaired, and is rotated by means of a drive motor. The chuck is mounted in an arm which is arranged to move in an arcuate path over a substantially flat rotary grinding disc, and subsequently over a secondary grinding station and two polishing stations. During operation, fluid is continually circulated through a sealed enclosure of the apparatus, to flush away particles of glass, etc., which are collected as sediment in a disposable tank.
    Type: Grant
    Filed: December 24, 1986
    Date of Patent: October 10, 1989
    Assignee: 501 Abbeybench Limited
    Inventors: Margaret Jenkinson, John Dunne