Patents by Inventor Bert F. Cook

Bert F. Cook 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).

  • Patent number: RE34747
    Abstract: An integrated three-chamber absorption refrigeration and heat pump system with improved defrost capabilities having a solution pair including a material of .[.unusable.]. .Iadd.unusual .Iaddend.fluid stability at higher temperatures when manipulated in an apparatus and system to take advantage of its properties. Disclosed materials of a solution pair for operation as part of the system of this invention are ammonia as the refrigerant and sodium thiocyanate as the absorbent. A heat transfer sub-system is provided, for conveying a working fluid between the components, having multiple switchable valve means, including first, second, and third valve members selectively switchable to convey the working fluid from the cooling mode to the heating mode and vice versa, as well as to the defrost mode.
    Type: Grant
    Filed: August 31, 1992
    Date of Patent: October 4, 1994
    Assignee: Columbia Gas Service Corporation
    Inventors: Stephen Petty, Bert F. Cook