Patents by Inventor Willard L. Eash

Willard L. Eash 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).

  • Hydraulic isolation manifold
    Patent number: 5287567
    Abstract: A time shared arrangement for delivering spa water and pool water to a water heater is disclosed in which check valves respond to the presence of spa water and pool water pressure. Water drawn from the pool is diverted into two streams, one passes through a check valve to a water heater and the other passes through a check valve to a return line. The flow of pool water to the heater is isolated by a further check valve forced to a close position by the pressure of the pool water. Water drawn from the spa is diverted into two streams, one passes through a check valve to a water heater and the other passes through a check valve to a return line. The flow of spa water to the heater is isolated by a check valve forced is closed by the pressure of spa water.
    Type: Grant
    Filed: March 12, 1993
    Date of Patent: February 22, 1994
    Assignee: Horner Equipment of Florida, Inc.
    Inventors: Willard L. Eash, Paul F. Fulmer