Patents by Inventor Pedro B. Crosas

Pedro B. Crosas 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: 4232758
    Abstract: Electrovalves are opened in automobile piping of a brake line, a clutch line and a fuel line by a current through normally open contacts of a plurality of control relays and through normally closed contacts of an interlocking relay. The control relays are operated by selected switches of a plurality of push-button switches while the interlocking relay is operated by the non-selected switches of the plurality of switches. The control relays are interconnected so that the selected push-button switches must be operated in a selected sequence. All the relays have holding circuits.
    Type: Grant
    Filed: April 27, 1978
    Date of Patent: November 11, 1980
    Inventor: Pedro B. Crosas