Patents by Inventor Kenneth D. Rolt

Kenneth D. Rolt 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).

  • Sound reinforcing seal for slotted acoustic transducers
    Patent number: 5103130
    Abstract: A split-ring or split-cylinder transducer in which a full or partial boot covering a shell is caused to be looped into the gap of the shell so that outward radial movement and circumferential expansion of the shell causes the boot to also move outwardly thus reinforcing the sound wave generated exterior to the shell of the transducer.
    Type: Grant
    Filed: December 20, 1988
    Date of Patent: April 7, 1992
    Inventors: Kenneth D. Rolt, Peter F. Flanagan
  • Hinge-modified flextensional transducer
    Patent number: 4932008
    Abstract: A flextensional transducer provides a low resonance frequency by having its shell portions connected to its ends by a pin- or rotation-type hinge whereby the motion of the ends of the transducer caused by energization of the transducer drive is transferred to the shell portions by the hinge. The reduction in the resonance frequency is achieved by the shell portions acting as a hinged plate whose ends rotate relative to the transducer ends rather than being cantilevered as in the prior art.
    Type: Grant
    Filed: September 19, 1989
    Date of Patent: June 5, 1990
    Assignee: Raytheon Company
    Inventor: Kenneth D. Rolt
  • Flextensional electroacoustic transducer with hydrostatically compression-loaded driver
    Patent number: 4862429
    Abstract: A flextensional electroacoustic transducer with end plates and outwardly convex shells connected to form a housing containing a transduction drive member and laterally disposed tensioning members in contact with said end plates. The tensioning members are connected by hinges allowing rotational oscillatory movement of the end plates with respect to said hinges. Another embodiment includes end plate hinges where the end plates contact the transduction drive member and hinges where the shells connect to the end plates.
    Type: Grant
    Filed: October 4, 1988
    Date of Patent: August 29, 1989
    Assignee: Raytheon Company
    Inventor: Kenneth D. Rolt