Patents by Inventor David M. Finnegan

David M. Finnegan 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).

  • Fire protection sprinkle and release mechanism
    Patent number: 6123153
    Abstract: A fire protection sprinkler has a body with an orifice and a coaxial outlet for delivery of fire protection fluid from a source; a cap that resists flow of fluid from the outlet in a sprinkler standby condition; and an actuator securing the cap in the standby condition and releasing the cap in an operating condition to permit flow of fluid from the outlet. The actuator includes a thermally sensitive release assembly with an elongated thermally sensitive element, e.g.
    Type: Grant
    Filed: December 30, 1998
    Date of Patent: September 26, 2000
    Assignee: Grinnell Corporation
    Inventor: David M. Finnegan