Patents by Inventor Leonard Todd Caldwell

Leonard Todd Caldwell 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).

  • Portable tanking system and method
    Patent number: 9310022
    Abstract: Some embodiments include a method of providing substantially uninterrupted gas service by coupling at least one gas cylinder to a portable tanking assembly. The tanking assembly can include a cart including a rear frame and a coupled carrier frame supported on an axle with wheels. In some embodiments, the carrier frame can include a caged regulation assembly housing at least a portion of a regulation apparatus with an upstream supply end coupled to a downstream delivery end. In some embodiments, the regulation apparatus includes a primary regulator coupled a one relief valve. The relief valve can be coupled to a downstream regulator, coupled to a water column gauge. In some embodiments, the regulation apparatus further includes a delivery valve. In some embodiments, the delivery valve comprises a distribution manifold assembly including a manifold and a plurality of distribution couplers coupled to the manifold.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: April 12, 2016
    Assignee: Pacific Gas and Electric Company
    Inventors: Michael Tom Sakaguchi, Jon Wilson Armstrong, Leonard Todd Caldwell, Richard D. White
  • PORTABLE TANKING SYSTEM AND METHOD
    Publication number: 20140261707
    Abstract: Some embodiments include a method of providing substantially uninterrupted gas service by coupling at least one gas cylinder to a portable tanking assembly. The tanking assembly can include a cart including a rear frame and a coupled carrier frame supported on an axle with wheels. In some embodiments, the carrier frame can include a caged regulation assembly housing at least a portion of a regulation apparatus with an upstream supply end coupled to a downstream delivery end. In some embodiments, the regulation apparatus includes a primary regulator coupled a one relief valve. The relief valve can be coupled to a downstream regulator, coupled to a water column gauge. In some embodiments, the regulation apparatus further includes a delivery valve. In some embodiments, the delivery valve comprises a distribution manifold assembly including a manifold and a plurality of distribution couplers coupled to the manifold.
    Type: Application
    Filed: March 12, 2014
    Publication date: September 18, 2014
    Applicant: PACIFIC GAS AND ELECTRIC COMPANY
    Inventors: Michael Tom Sakaguchi, Jon Wilson Armstrong, Leonard Todd Caldwell, Richard D. White