Patents by Inventor Haim Heifetz

Haim Heifetz 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: 4102956
    Abstract: A building method of the kind wherein an inflatable former, made of a flexible, substantially inextensible material is sealingly anchored to a base and is inflated to a predetermined pressure and, while maintaining said pressure substantially constant, a cementitious material is applied to the outer surface of the former to a required thickness and, after the material has set, the former is deflated, released from the base and removed for reuse, including the steps of:(a) inflating the former to a predetermined initial inflation pressure,(b) applying successive layers of cementitious material to said former, and(c) continuously or intermittently raising said inflation pressure in correspondence with the increasing thickness of said layers.
    Type: Grant
    Filed: January 29, 1976
    Date of Patent: July 25, 1978
    Inventor: Haim Heifetz