Patents by Inventor Yelena N. Kaplan
Yelena N. Kaplan 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: 8992211Abstract: An adaptive gaseous fuel ignition control method for use in consumer and commercial appliances that reduces stress on and increases the life of a hot surface igniter without resulting in a failure to ignite condition is provided. The method provides a preheating period, a full temperature period, and a trial for ignition period. The preheating period gradually increases the power applied to reduce the stress resulting therefrom. Once a gas valve has been commanded open, the controller monitors the time for ignition of the gaseous fuel. If the time is longer than a threshold, either the applied power or the period of time during which the power is applied is increased to shorten the time. If, however, the ignition period is shorter than the threshold, either the power applied or the period of time during which the power is applied before commanding the gas valve open is lowered or shortened.Type: GrantFiled: June 24, 2008Date of Patent: March 31, 2015Assignee: Robertshaw US Holding Corp.Inventors: John Kociecki, Yelena N. Kaplan
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Patent number: 7944678Abstract: A low voltage power supply circuit for intermittent pilot and/or direct spark ignition systems utilized in gas burning appliances is provided. The circuit utilizes a single transformer and a resonant circuit to supply power to both a flame sense circuit as well as the spark generation circuit. The resonant circuit allows the use of low power sources such as batteries or self-supplied voltage systems such as thermopiles or hydro generators. Recognizing that power draw from the low power source is high during a sparking event and recharging of a sparking capacitor, the flame sensing is suspended during the sparking event and for a short recharge time thereafter.Type: GrantFiled: September 11, 2008Date of Patent: May 17, 2011Assignee: Robertshaw Controls CompanyInventors: Yelena N. Kaplan, Dale Thomas Rodda
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Publication number: 20100110684Abstract: LED assemblies and luminaires comprising the same are described herein. In some embodiments, the LED assemblies and luminaires are suitable for use in a wide variety of applications including outdoor lighting applications such as roadway and sidewalk lighting, parking lot lighting and residential area lighting.Type: ApplicationFiled: October 28, 2009Publication date: May 6, 2010Applicant: ABL IP HOLDING LLCInventors: Yaser Abdelsamed, Jeffrey D. McClow, Januk Aggarwal, Luke J. Siefker, Jonathan Meyer, Robert W. Scites, Kellis Coffman, Chris Rice, Yelena N. Kaplan, Michael M. Minarczyk
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Publication number: 20100075264Abstract: A redundant ignition control system and method for gas burning appliances is provided. The system utilizes a main processor and a supervisory processor to provide the redundant, fail safe operation of both the pilot valve and the main gas valve of the appliance. Three switching elements under the control of the two processors, as well as the use of high pass filters to block DC from the gas control valves provide redundant, fail safe operation. The use of variable duty cycle or frequency pulse width modulated signals enables use in low power applications and ensures system safety. Inclusion of a gas valve verification sequence, ignition sequence, burner monitoring sequence, and heat shutdown and standby sequences ensures safe, low power operation during normal control, and fail safe operation upon the failure of any component of the system.Type: ApplicationFiled: September 22, 2008Publication date: March 25, 2010Applicant: ROBERTSHAW CONTROLS COMPANYInventors: Yelena N. Kaplan, Dale Thomas Rodda
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Publication number: 20100061034Abstract: A low voltage power supply circuit for intermittent pilot and/or direct spark ignition systems utilized in gas burning appliances is provided. The circuit utilizes a single transformer and a resonant circuit to supply power to both a flame sense circuit as well as the spark generation circuit. The resonant circuit allows the use of low power sources such as batteries or self-supplied voltage systems such as thermopiles or hydro generators. Recognizing that power draw from the low power source is high during a sparking event and recharging of a sparking capacitor, the flame sensing is suspended during the sparking event and for a short recharge time thereafter.Type: ApplicationFiled: September 11, 2008Publication date: March 11, 2010Applicant: Robertshaw Controls CompanyInventors: Yelena N. Kaplan, Dale Thomas Rodda
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Publication number: 20090317755Abstract: An adaptive gaseous fuel ignition control method for use in consumer and commercial appliances that reduces stress on and increases the life of a hot surface igniter without resulting in a failure to ignite condition is provided. The method provides a preheating period, a full temperature period, and a trial for ignition period. The preheating period gradually increases the power applied to reduce the stress resulting therefrom. Once a gas valve has been commanded open, the controller monitors the time for ignition of the gaseous fuel. If the time is longer than a threshold, either the applied power or the period of time during which the power is applied is increased to shorten the time. If, however, the ignition period is shorter than the threshold, either the power applied or the period of time during which the power is applied before commanding the gas valve open is lowered or shortened.Type: ApplicationFiled: June 24, 2008Publication date: December 24, 2009Applicant: RANCO INCORPORATED OF DELAWAREInventors: John Kociecki, Yelena N. Kaplan
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Patent number: 6985080Abstract: An analog flame sense circuit is provided that utilizes the flame rectification method of sensing flame. The circuit uses an AC voltage source and discrete components to provide the sensing of the flame current. Either a single-pole or a two-pole filter may be used to smooth the generated sense voltage. A DC bias is provided to the filter to ensure a positive voltage. The circuit also includes a high-gain, high-impedance amplifier to translate the high impedance voltage of the sensing portion of the circuit to a relatively low impedance voltage for use by an electronic control circuit. In one embodiment, a high-gain emitter-follower amplifier constructed from two bi-polar junction transistors (BJTs) is used. An integrated Darlington configuration may be used, as well as a single BJT having a high gain, and an integrated operational amplifier.Type: GrantFiled: March 7, 2003Date of Patent: January 10, 2006Assignee: Ranco Incorporated of DelawareInventors: John Kociecki, Yelena N. Kaplan
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Publication number: 20040174265Abstract: An analog flame sense circuit is provided that utilizes the flame rectification method of sensing flame. The circuit uses an AC voltage source and discrete components to provide the sensing of the flame current. Either a single-pole or a two-pole filter may be used to smooth the generated sense voltage. A DC bias is provided to the filter to ensure a positive voltage. The circuit also includes a high-gain, high-impedance amplifier to translate the high impedance voltage of the sensing portion of the circuit to a relatively low impedance voltage for use by an electronic control circuit. In one embodiment, a high-gain emitter-follower amplifier constructed from two bi-polar junction transistors (BJTs) is used. An integrated Darlington configuration may be used, as well as a single BJT having a high gain, and an integrated operational amplifier.Type: ApplicationFiled: March 7, 2003Publication date: September 9, 2004Applicant: Ranco Incorporated of DelawareInventors: John Kociecki, Yelena N. Kaplan