Patents Represented by Attorney, Agent or Law Firm Frank A. Lukask
  • Supplemental heat source
    Patent number: 6213405
    Abstract: A supplemental heat source in a pool heating system consisting of a heat reserve element, a contactor, a switch/relay, a light and an accessory switch. The contactor engages the supplemental heat reserve element when the ambient temperature drops to the middle forty degree range. The supplemental heat source replaces the compressor as the heat source and allows the compressor to defrost.
    Type: Grant
    Filed: June 19, 2000
    Date of Patent: April 10, 2001
    Inventor: Bill Spiegel