Patents by Inventor Herschel W. Crump

Herschel W. Crump 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).

  • Intruder detection and deterrent system
    Patent number: 4642612
    Abstract: The present invention discloses a staged system for both detecting and deterring intruders into a closed space such as a home or business. The staged system provides varying responses according to the degree of penetration of the intruder into the protected area.
    Type: Grant
    Filed: June 18, 1984
    Date of Patent: February 10, 1987
    Inventor: Herschel W. Crump
  • Sound-muffling system
    Patent number: 4557349
    Abstract: The present invention discloses a sound muffling system which utilizes natural forces such as destructive resonance, coriolis effect, and ramcharging effect to provide a highly efficient low back-pressure muffler for internal combustion engines, compressors, and other machines emitting a pulsed gaseous stream. The system utilizes inlet and outlet coaxial flow tubes with radial ports and a stator/baffle located concentrically in an outer shell.
    Type: Grant
    Filed: August 10, 1983
    Date of Patent: December 10, 1985
    Inventor: Herschel W. Crump