U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Bizarre Patents

Patent No. 5356330

Apparatus for Simulating a High Five

A self-righting hand-arm configuration which is adapted to pivot when struck by a user, thereby simulating a "high five."

Newsletter  PatentStorm News

Make the Most of Our Site

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest innovations by subscribing to an RSS feed.

Registered users: Manage your profile.

 

Class 431/31 - Scavenging or purging period started by combustion demand


Subclass of Class 431 - Combustion
Definition: Apparatus in which, during initiation of a combustion period,
No. of patents: 48
Last issue date: 01/25/2000


1    
NumberTitleIssue Date
6016625Methods and apparatuses for monitoring or controlling pests
An apparatus and methods for monitoring and/or controlling pests, particularly termites. The apparatus employ one or more extractor means for selectively moving termite monitoring and/or termite baiting devices. Stations used for the monitoring or control...
01/25/2000
5997280Intelligent burner control system
An intelligent burner control apparatus is provided for controlling the rate of air and fuel flow in a burner system from air and fuel supplies to a burner. The apparatus includes a peer-to-peer communication network including a plurality of network contr...
12/07/1999
5902098Method for controlling an ignition for a gas boiler
A method for controlling an igniting operation for a gas boiler for preventing an explosive ignition is disclosed. The gas boiler is equipped with a burner for burning a gas, a fan for exhausting a burnt gas in the burner, and an ignition plug for perform...
05/11/1999
5685707Integrated burner assembly
An integrated burner system is disclosed having a fuel supply assembly including a fuel control for variably limiting the flow of fuel into the burner along with a discrete air control for generating a variable flow of air into the burner. The respective ...
11/11/1997
5658140Combustion device
A combustion of the present invention has a burner, a combustion fan supplying air to the burner, revolution rate detection means for detecting a revolution rate of the fan, and an air-flow rate sensor for detecting an air-flow rate of the air. The combus...
08/19/1997
5456597Intelligen transient eliminator for an ignition system
The present invention relates to an intelligent transient eliminator which allows a gas ignition system to prevent gas valves from being turned off by a pressure switch in response to a transient pressure wave. The transient eliminator is preferably provi...
10/10/1995
5386815Electric control apparatus for pulse combustion device
An electric control system for a pulse combustion device of the type which includes a combustion chamber mounted within a liquid vessel of a liquid heating apparatus, fuel and air inlet valves arranged to supply a mixture of fuel and air into the combusti...
02/07/1995
5372497Process and apparatus for igniting a burner in an inert atmosphere
According to this invention there is provided a process and apparatus for the ignition of a pilot burner in an inert atmosphere without substantially contaminating the inert atmosphere. The process includes the steps of providing a controlled amount of co...
12/13/1994
5360335Fuel burner control system with selectable standing pilot mode
A burner control system with an interrupted or intermittent type of pilot burner has a special feature allowing transitions between a pilot flame hold state where the pilot flame only burns and the run state where the main burner is operating. Each transi...
11/01/1994
5348466Heat exchanger system, fuel control system therefor and methods of making the same
A heat exchanger system, a fuel control system therefor and methods of making the same are provided, the fuel control system having an electrical circuit means that comprises an ignition trial portion, a flame sensing control portion and a timer portion t...
09/20/1994
5209655Heat exchanger system, fuel control system therefor, and methods of making the same
A heat exchanger system, a fuel control system therefor and methods of making the same are provided, the fuel control system having an electrical circuit means that comprises an ignition trial portion, a flame sensing control portion and a timer portion t...
05/11/1993
5197665Water heater
A water heater includes a tank for receiving cold water and dispensing heated water. A thermostat is associated with the tank and detects the temperature of water held therein. A gas burner including a hot surface igniter receives fuel to be combusted via...
03/30/1993
5154160Automated oven with gas-fired radiant heater assembly
An automated conveyorized oven includes a radiant heater assembly including a plurality of gas-fired radiant heaters positioned beneath the oven conveyor. Each heater assembly includes radiant heating elements in the form of perforate metallic plates, at ...
10/13/1992
5141431Heat exchanger system, fuel control system therefor
A heat exchanger system, a fuel control system therefor and methods of making the same are provided, the fuel control system having an electrical circuit means that comprises an ignition trial portion, a flame sensing control portion and a timer portion t...
08/25/1992
5044929Ignition control apparatus for pulse combustor
An ignition control apparatus for a pulse combustor, wherein the number of trials for energization of a spark electrode is calculated and memorized, the memorized number of trials is reset to an initial value or zero after ignition of the fuel-air mixture...
09/03/1991
5009588Time-delay circuit for automatic shutdown of furnace systems
Time-delay circuit for automatic shutdown of furnace systems has an induced draft blower motor and a first circuit for providing energy to the blower motor from an energy source. A second circuit for energizing the primary control system of the furnace, i...
04/23/1991
4992040Airflow switch checking circuit
A burner system has a control system which operates to prevent startup of the burner if an airflow switch indicates presence of combustion air flow before startup of a blower which provides the air flow. If the airflow switch later indicates absence of ai...
02/12/1991
4970822Contact poison delivery system
This invention relates to the placement of insecticides in such a manner that precludes their contact by larger non target species and in a manner that isolates these insecticides form contact with food and other surfaces that may be contaminated by rando...
11/20/1990
4850852Gas valve shut off method and apparatus
Provision is made for sensing when the gas valve relay contacts are welded, or stuck, in the closed position and for responsively turning off the inducer motor when that occurs. This in turn causes the pressure switch to open to thereby cut off the power ...
07/25/1989
4842510Integrated furnace control having ignition and pressure switch diagnostics
An integrated electronic control arrangement is disclosed in the illustrative environment of burner such as in a gas-fired furnace. The control incorporates a self-test feature which shuts down the furnace in the event of any one of a number of possible s...
06/27/1989
4752210Power vent and control for furnace
An improved power vent and associated control system for a heating apparatus such as a furnace. The invention utilizes a vent blower and a flow control orifice device permitting the use of a single size air moving device and motor with different size furn...
06/21/1988
4711628Hot surface ignition system for a gas furnace and method of making the same
A hot surface ignition system for a gas furnace and method of making the same are provided, the system comprising a high voltage circuit for being connected to a source of high voltage AC current, the high voltage circuit having a hot surface igniter ther...
12/08/1987
4695246Ignition control system for a gas appliance
An ignition control system for a direct ignition gas appliance, such as a furnace. A main gas valve, spark generator, flame sensor, and purge blower are all interconnected to a single controller. The controller issues a purge signal to the blower for a fi...
09/22/1987
4496305Ignition control circuit for a boiler system
An ignition system for a furnace or boiler where a predetermined number of firing pulses are generated between timing intervals to allow purging of the combustion chamber. If combustion occurs, the firing pulses are terminated. If combustion does not occu...
01/29/1985
4488537Method and installation for improving the efficiency of a submerged-combustion heating installation
The invention relates to a method and installation for improving the efficiency of a submerged-combustion heating installation. According to the invention, to prevent thermal stresses injurious to the combustion chamber (3) and avoid the production or pen...
12/18/1984
4482312Burner control system
A burner control apparatus for use with a furnace installation that has an operating control to produce a request for burner operation, a flame sensor to produce a signal when flame is present in the monitored combustion chamber, one or more devices for c...
11/13/1984
4460329Power vent and control for furnace
An improved power vent and associated control system for a heating apparatus such as a furnace. The invention utilizes a vent blower and a flow control orifice device permitting the use of a single size air moving device and motor with different size furn...
07/17/1984
4459099Fuel and ignition control
A fuel and ignition control for a pulse combustion furnace includes both analog and digital timing means for fail safe operation, fuel valve control means which depend on proper cyclic operation for proper function, and flame detection means which are fai...
07/10/1984
4457692Dual firing rate flame sensing system
A flame rod inserted in a flame created by the secondary air supplied to a burner is used to generate a flame signal voltage. This flame signal voltage fluctuates with the amount of secondary air available and with the fuel supplied. These fluctuations ar...
07/03/1984
4445841Combustion control apparatus
A combustion control apparatus in which a predetermined number of pre-purge and igniting cycles are repeated until ignition takes place successfully. A pre-purge time interval of the second and subsequent igniting cycles is selected shorter than that of t...
05/01/1984
4439140Energy saving boiler purge sequence control
An improved boiler purge control in which purging air is forced into the boiler only after the damper is substantially in its high fire position....
03/27/1984
4415328Fuel and ignition control
A fuel and ignition control for a pulse combustion furnace includes both analog and digital timing means for fail safe operation, fuel valve control means which depend on proper cyclic operation for proper function, and flame detection means which are fai...
11/15/1983
4403943Flame surveying means in burner ignition
A device for liquid fuel burners includes an electrically controlled valve which allows the feeding of fuel to the burner, the valve being provided with a retaining winding for permanently allowing the flow of fuel when the burner is in operation. The dev...
09/13/1983
4395224Burner control system
A burner control apparatus for use with a fuel installation that has an operating control to produce a request for burner operation, a flame sensor to produce a signal when flame is present in the monitored combustion chamber, and one or more devices for ...
07/26/1983
4389184Combustion control apparatus
A combustion control apparatus which controls combustion in a combustor which is a heat source of a hot-water boiler or a hot-air heater includes a memory circuit which generates an alarm signal and also a signal for stopping the operation of the apparatu...
06/21/1983
4370126Combustion control apparatus
This invention relates to a control circuit which controls combustion in a burner acting as a heat source of a hot-water boiler or a hot-air heater. More particularly, the present invention relates to a control circuit having a sequence which includes pos...
01/25/1983
4303383Condition control system with safety feedback means
A condition control system in the form of a fuel burner control means is disclosed. A group of relays and their associated contacts are used to control the burner means. The status of the relays and their contacts are continuously checked by a control log...
12/01/1981
4299555Control circuit for combustion systems
A control circuit for gas fired burners and the like such as are employed in commercial laundry fabric ironers requiring the energization of a blower motor and the resulting opening of a gas valve and ignition of a gas burner only after an air pressure se...
11/10/1981
4257759Fuel burner primary control means
A fuel burner primary control with a pre-purge and extended ignition function has been disclosed. The system has been disclosed as an oil burner which utilizes a voltage regulator to insure that adequate power is supplied to the device and with a time del...
03/24/1981
4249884Burner control apparatus with stabilized pilot flame timing interval
Burner control apparatus includes a control device for actuating an ignition control means, and a timing circuit for providing an ignition timing interval which extends beyond flame detection for a timed interval. The timing circuit is actuated in respons...
02/10/1981
1    
 
Sign InRegister
Username  
Password   
forgot password?