Patents by Inventor Michael S. Ruffu

Michael S. Ruffu 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: 5415241
    Abstract: A battering ram device is provided for allowing quick forcible entry through locked closures. The device includes a ram that slides within and partially out of a housing. The ram is connected to a piston which also slides within a cylindrical housing. The housing is connected to a firing mechanism that uses an explosive cartridge for driving the piston forwardly and subsequently forcing the ram partially out of its housing to deliver a blow to a closure. The piston and cylinder further include an energy absorbing mechanism for retarding the motion of the ram once it penetrates through a closure. The ram can be configured as a thin rectangular piece for allowing the ram to fit between a door knob and jamb of most doors. Other ram configurations include a punch for effectively knocking out a door lock of a steel or metal door, and a shearing head for effectively cutting a steel cable, bar, or wire.
    Type: Grant
    Filed: August 25, 1993
    Date of Patent: May 16, 1995
    Assignee: TAC Inc.
    Inventors: Michael S. Ruffu, Paul J. Shemeta