Patents by Inventor Howard E. Rittenhouse

Howard E. Rittenhouse 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).

  • Safety interlock system for preset counters
    Patent number: 4104511
    Abstract: An actuating counter for use in conjunction with a fluid metering device, such as a liquid displacement meter, which can be preset prior to commencement of operation to count out a desired number of product units characterized in that upon actuation of the preset mechanism, further manual operation of the preset mechanism is precluded by an interlock mechanism which is equally adaptable to existing and newly manufactured counters, yet which can be aborted at any time in an emergency.
    Type: Grant
    Filed: March 15, 1976
    Date of Patent: August 1, 1978
    Assignee: Liquid Controls Corporation
    Inventor: Howard E. Rittenhouse