Patents by Inventor Derek P. Dotson

Derek P. Dotson 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).

  • Control system for fluid-filled beds
    Patent number: 5020176
    Abstract: A system for automatically controlling the pressure maintained in a plurality of fluid-filled cylinders supporting a sleep surface in order to maintain a desired degree of firmness/softness. In one mode, the system permits the user to set the desired level of firmness and then the system acts to maintain that level under the conditions encountered in use, either venting if an above-setting pressure is sensed or pumping to fill if a below-setting pressure is detected. In another mode, the user is enabled to manually activate either the pump or the vent in order to vary the firmness to his choice.
    Type: Grant
    Filed: October 20, 1989
    Date of Patent: June 4, 1991
    Assignee: Angel Echevarria Co., Inc.
    Inventor: Derek P. Dotson