Patents by Inventor Salvatore J. Cristina

Salvatore J. Cristina 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).

  • Device for controlling the degree of blowback delay in automatic weapons
    Patent number: 4301712
    Abstract: Device for controlling the degree of blowback delay in automatically operable weapons is provided and comprises locking means which are operable to prevent opening of the weapon breech until breech pressures have dropped to generally residual, safe levels. For use with automatically operable pistols the device takes the form of a hammerlock which locks the hammer to the slide, and for use with automatically operable long guns the device takes the form of a boltlock which locks the bolt to the receiver.
    Type: Grant
    Filed: May 7, 1979
    Date of Patent: November 24, 1981
    Inventor: Salvatore J. Cristina