Patents by Inventor Pat Smith

Pat Smith 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: 4600175
    Abstract: A support for an ophthalmic refracting instrument includes a vertical support column preferably comprised of a pair of closely spaced upright members. A rigid horizontal support member has one end secured to the top of the vertical support column. The free end of the support member extends to the vicinity above and in front of the patient's chair. The support member includes an elongated horizontally extending bar therein. The refracting instrument is mounted on a bar carried by a slide assembly. The slide assembly includes a pair of bearing blocks which surround the elongated shaft so that the entire slide assembly along with the refracting instrument can be slid between an inoperative position where it is adjacent the vertical support column and an operative position where the refracting instrument is in front of the patient. Magnets act as stop mechanisms and hold the slide assembly in each of its two extreme positions.
    Type: Grant
    Filed: October 18, 1984
    Date of Patent: July 15, 1986
    Assignee: Charles D. Bell Incorporated
    Inventors: Charles D. Bell, Pat Smith