Patents by Inventor Horace Stanley Hawthorne

Horace Stanley Hawthorne 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).

  • Arch forms and a method of moulding same
    Patent number: 4099329
    Abstract: An arch form comprises a tooth portion including a plurality of integral teeth injection moulded in pastics material and arranged in a curved row, and a gum portion in situ injection moulded onto the tooth portion so as to overlie an upper surface thereof. An undulating ridge extends along the upper surface of the tooth portion and is surrounded by the gum portion. Front teeth of the tooth portion have a substantially natural inclination with respect to the general plane of the tooth portion, whereas rear teeth thereof are inclined towards the front teeth such that their direction of extent is angled at 10.degree. to 20.degree. with respect to their counterparts in a natural set of teeth.A method of moulding the arch form requires the provision of a two-part mould defining the shape of the tooth portion, and a further mould part defining the shape of the gum portion.
    Type: Grant
    Filed: April 21, 1976
    Date of Patent: July 11, 1978
    Assignee: Lucas Electrical Limited
    Inventor: Horace Stanley Hawthorne