Patents by Inventor Stefan Daystrom
Stefan Daystrom 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).
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Patent number: 7859813Abstract: A control system for a bathing installation which has one or more electrically powered devices. A line voltage service is connected through a GFCI to power the electrically powered devices, the GFCI adapted to interrupt the service upon detection of a ground fault. A trip circuit may induce a ground fault and trip the GFCI in response to a trip signal, thereby disabling application of electrical power to the electrically powered devices. An electronic circuit is responsive to a fault condition for generating the trip signal.Type: GrantFiled: November 30, 2009Date of Patent: December 28, 2010Assignee: Balboa Instruments, Inc.Inventors: David J. Cline, Richard A. Corrington, Stefan Daystrom
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Publication number: 20100132106Abstract: A control system for a bathing installation which has one or more electrically powered devices. A line voltage service is connected through a GFCI to power the electrically powered devices, the GFCI adapted to interrupt the service upon detection of a ground fault. A trip circuit may induce a ground fault and trip the GFCI in response to a trip signal, thereby disabling application of electrical power to the electrically powered devices. An electronic circuit is responsive to a fault condition for generating the trip signal.Type: ApplicationFiled: November 30, 2009Publication date: June 3, 2010Inventors: David J. Cline, Richard A. Corrington, Stefan Daystrom
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Patent number: 7626789Abstract: A control system for a bathing installation which has one or more electrically powered devices. A line voltage service is connected through a GFCI to power the electrically powered devices, the GFCI adapted to interrupt the service upon detection of a ground fault. A trip circuit may induce a ground fault and trip the GFCI in response to a trip signal, thereby disabling application of electrical power to the electrically powered devices. An electronic circuit is responsive to a fault condition for generating the trip signal.Type: GrantFiled: July 31, 2008Date of Patent: December 1, 2009Assignee: Balboa Instruments, Inc.Inventors: David J. Cline, Richard A. Corrington, Stefan Daystrom
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Publication number: 20090067102Abstract: A control system for a bathing installation which has one or more electrically powered devices. A line voltage service is connected through a GFCI to power the electrically powered devices, the GFCI adapted to interrupt the service upon detection of a ground fault. A trip circuit may induce a ground fault and trip the GFCI in response to a trip signal, thereby disabling application of electrical power to the electrically powered devices. An electronic circuit is responsive to a fault condition for generating the trip signal.Type: ApplicationFiled: July 31, 2008Publication date: March 12, 2009Inventors: David J. Cline, Richard A. Corrington, Stefan Daystrom
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Patent number: 7417834Abstract: A control system for a bathing installation which has one or more electrically powered devices. A line voltage service is connected through a GFCI to power the electrically powered devices, the GFCI adapted to interrupt the service upon detection of a ground fault. A trip circuit may induce a ground fault and trip the GFCI in response to a trip signal, thereby disabling application of electrical power to the electrically powered devices. An electronic circuit is responsive to a fault condition for generating the trip signal.Type: GrantFiled: April 22, 2005Date of Patent: August 26, 2008Assignee: Balboa Instruments, Inc.Inventors: David J. Cline, Richard A. Corrington, Stefan Daystrom
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Publication number: 20060238931Abstract: A control system for a bathing installation which has one or more electrically powered devices. A line voltage service is connected through a GFCI to power the electrically powered devices, the GFCI adapted to interrupt the service upon detection of a ground fault. A trip circuit may induce a ground fault and trip the GFCI in response to a trip signal, thereby disabling application of electrical power to the electrically powered devices. An electronic circuit is responsive to a fault condition for generating the trip signal.Type: ApplicationFiled: April 22, 2005Publication date: October 26, 2006Inventors: David Cline, Richard Corrington, Stefan Daystrom
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Patent number: 6590188Abstract: A control system for bathers includes an electronic controller which controls operation of an electric heater assembly connected in a water flow path for heating water. The heater assembly includes a heater housing and electric heater element. A solid state water temperature sensor apparatus provides electrical temperature signals to the controller indicative of water temperature at separated first and second locations on or within the heater housing. The presence of water in the heater housing is detected electronically, by turning on the heater, and monitoring the temperature sensors for unusual temperature rises or other faults for a period of time thereafter. A solid state water presence sensor apparatus can also be used to determine the presence of water within the heater housing, providing electrical water presence signals to the controller indicative of the presence or absence of a body of water within the heater housing.Type: GrantFiled: June 22, 2001Date of Patent: July 8, 2003Assignee: Balboa Instruments, Inc.Inventors: David J. Cline, Cindy Otto, Stefan Daystrom
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Publication number: 20020047006Abstract: A control system for bathers includes an electronic controller which controls operation of an electric heater assembly connected in a water flow path for heating water. The heater assembly includes a heater housing and electric heater element. A solid state water temperature sensor apparatus provides electrical temperature signals to the controller indicative of water temperature at separated first and second locations on or within the heater housing. The presence of water in the heater housing is detected electronically, by turning on the heater, and monitoring the temperature sensors for unusual temperature rises or other faults for a period of time thereafter. A solid state water presence sensor apparatus can also be used to determine the presence of water within the heater housing, providing electrical water presence signals to the controller indicative of the presence or absence of a body of water within the heater housing.Type: ApplicationFiled: June 22, 2001Publication date: April 25, 2002Inventors: David J. Cline, Cindy Otto, Stefan Daystrom
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Patent number: 6282370Abstract: A control system for bathers includes an electronic controller which controls operation of an electric heater assembly connected in a water flow path for heating water. The heater assembly includes a heater housing and electric heater element. A solid state water temperature sensor apparatus provides electrical temperature signals to the controller indicative of water temperature at separated first and second locations on or within the heater housing. The presence of water in the heater housing is detected electronically, by turning on the heater, and monitoring the temperature sensors for unusual temperature rises or other faults for a period of time thereafter. A solid state water presence sensor apparatus can also be used to determine the presence of water within the heater housing, providing electrical water presence signals to the controller indicative of the presence or absence of a body of water within the heater housing.Type: GrantFiled: June 16, 1999Date of Patent: August 28, 2001Assignee: Balboa Instruments, Inc.Inventors: David J. Cline, Cindy Otto, Stefan Daystrom