Patents by Inventor Tokishige Tsuboi

Tokishige Tsuboi 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).

  • Apparatus for producing precast concrete members
    Patent number: 3947171
    Abstract: An apparatus for producing precast concrete members which is efficient, mobile and cost saving, and comprises at least: a curing chamber having an opening in the portion which faces substantially a concrete placing section and having a plurality of support members to support form members leaving predetermined distance apart, a high temperature curing apparatus which is installed to said curing chamber, a concrete placing section in which necessary work for concrete placing is carried out, and a predetermined number of precast concrete form members which are diposed and moved horizontally and separately between said support members in said curing chamber and said concrete placing section by horizontal transfer means which comprise a plurality of rollers attached to said support members.
    Type: Grant
    Filed: December 11, 1972
    Date of Patent: March 30, 1976
    Assignee: The Shimizu Construction Co., Ltd.
    Inventors: Kazuyoshi Yasuda, Tokishige Tsuboi, Masashi Sudo