Patents by Inventor Earl E. Butts

Earl E. Butts 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).

  • Refrigeration system incorporating a single air circulation means for a combination refrigerated display case and walk-in cooler
    Patent number: 4124996
    Abstract: A combined refrigerated display case and walk-in cooler wherein an improved refrigeration system combines a single air circulation means and two distinct refrigeration units, a first refrigeration unit dispersing refrigerated air for a plurality of air curtains travelling across an access opening provided at the front of the display case portion of the combination, a second refrigeration unit dispersing refrigerated air rearwardly to the walk-in cooler portion of the combination. The front access opening provides unimpeded access to the refrigerated space of the display case. Support means are provided between the walk-in cooler portion and display case portion extending between a lower surface of the refrigeration system and the floor for carrying shelves associated with the refrigerated display case portion of the combination.
    Type: Grant
    Filed: March 16, 1977
    Date of Patent: November 14, 1978
    Assignee: Tyler Refrigeration Corporation
    Inventors: Thomas E. Kennedy, Earl E. Butts, Melvin W. Steelman
  • Refrigeration system incorporating a single air circulation means for a combination refrigerated display case and walk-in cooler
    Patent number: 4023378
    Abstract: A combined refrigerated display case and walk-in cooler wherein an improved refrigeration system combines a single air circulation means and two distinct refrigeration units, a first refrigeration unit dispersing refrigerated air for a plurality of air curtains travelling across an access opening provided at the front of the display case portion of the combination, a second refrigeration unit dispersing refrigerated air rearwardly to the walk-in cooler portion of the combination. The front access opening provides unimpeded access to the refrigerated space of the display case. Support means are provided between the walk-in cooler portion and display case portion extending between a lower surface of the refrigeration system and the floor for carrying shelves associated with the refrigerated display case portion of the combination.
    Type: Grant
    Filed: August 1, 1975
    Date of Patent: May 17, 1977
    Assignee: Tyler Refrigeration Corporation
    Inventors: Thomas E. Kennedy, Earl E. Butts, Melvin W. Steelman