Patents by Inventor Theodore D. Smith

Theodore D. 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).

  • Metallised fabric
    Patent number: 4508776
    Abstract: A microporous metallized fabric suitable for use as a thermally-insulating material in a hostile environment comprises a microporous fabric substrate for example of a spun-bonded polyethylene having a layer of aluminum deposited thereon by a vacuum deposition technique. A thin layer--typically of 0.9-1.0 g/m.sup.2 --of a polyamide-based ink is then printed on to the metallizing, by way of a photogravure printing process, in such a way as not to affect the porous structure of the metallized fabric.The metallized fabric of this invention finds a particular application as screening for commercial glass-houses, to reduce the heat-losses therefrom.
    Type: Grant
    Filed: October 11, 1983
    Date of Patent: April 2, 1985
    Inventor: Theodore D. Smith
  • Calculator type keyboard including printed circuit board contacts and method of forming
    Patent number: 4375017
    Abstract: A switch mechanism useful in a calculator type keyboard includes a printed circuit board conductor in which is punched a crater-like depression with a raised edge portion and a dome-like member positioned so that its apex may contact the raised edge portion when the switch mechanism is depressed. The punched crater-like depression is specifically formed by striking the printed circuit board conductor to form an edge extending above the predetermined height of the conductor surface, which in turn, is disposed above the planar surface of the dielectric substrate.
    Type: Grant
    Filed: March 26, 1980
    Date of Patent: February 22, 1983
    Assignee: RCA Corporation
    Inventor: Theodore D. Smith