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Class 219/513 - Comprising expansible fluid (e.g., alcohol or mercury)


Subclass of Class 219 - Electric heating
Definition: Subject matter wherein the particular thermally responsive
No. of patents: 40
Last issue date: 05/15/2007


NumberTitleIssue Date
7218129System, apparatus and method for controlling temperature of an integrated circuit under test
A system, apparatus and method for controlling temperature of an integrated circuit in a chip tester is disclosed. Embodiments include supplying a chilled fluid to a cold plate at a first flowrate, where the first flowrate is associated with a first valve setting ba...
05/15/2007
7199597Dual feedback control system for maintaining the temperature of an IC-chip near a set-point
A dual feedback control system maintains the temperature of an IC-chip near a set-point while the IC-chip dissipates a varying amount of electrical power. The first feedback circuit sends electrical power to an electric heater with a variable magnitude that compensa...
04/03/2007
7196535Thermal control system for environmental test chamber
A method includes setting a first target temperature for an object that is in contact with a thermal medium, repeatedly receiving input that is indicative of a current temperature of the thermal medium, repeatedly estimating the temperature of the object based on th...
03/27/2007
7025499Device for testing a material that changes shape when an electric and/or magnetic field is applied
A device for testing a material that changes shape when an electric and/or magnetic field is applied, in particular a piezoactive material, having a generator to generate an electric field and/or a magnetic field is described. This permits a rapid characterization o...
04/11/2006
7017358Apparatus and method for controlling the temperature of an electronic device
An apparatus for controlling the temperature of an electronic device under test includes a thermal head. The thermal head defines a flow channel for passage of a refrigerant fluid so as to cause transfer of thermal energy between the electronic device and the therma...
03/28/2006
7003963Cooling of receive coil in MRI scanners
Equipment for cooling an HTS receive coil (4) in an MRI scanner to a temperature below the transition temperature of the HTS comprises a refrigeration unit such as a Stirling cooler (1) the cold head (2) of which is connected by a non-metallic t...
02/28/2006
6975028Thermal apparatus for engaging electronic device
An apparatus for controlling the temperature of an electronic device utilizes a thermal head attached to a base structure including an integral isolation arrangement. For example, the isolation arrangement can be formed as a planar spring defined by slots in the bas...
12/13/2005
6894253Device for controlling the service loads of an electric household appliance, in particular a refrigerator
A control unit (3) for controlling an electric household appliance, e.g. a refrigerator, is connected in series with a positive temperature coefficient (PTC) resistive unit (4) which, when supplied with electric current, generates sufficient heat to ac...
05/17/2005
6496097Dual circuit temperature controlled switch
A temperature responsive switch includes a housing, an actuator arm for movement in response to temperature conditions, a movable contact, and an adjustable contact connected to a auxiliary terminal for completing an auxiliary circuit. The movable contact...
12/17/2002
6184504Temperature control system for electronic devices
An apparatus 10 for controlling a temperature of an electronic device 40, comprising a temperature regulated surface 100 and an actuator 105 adapted to alternately pulse the temperature regulated surface 100 and electronic device 40 between thermally coup...
02/06/2001
6121588Thermal actuation device
An actuation device comprising: at least two thermal actuators (5A,5B) electrically supplied, each thermal actuator (5A,5B) comprising relevant thrust means (4A,6A,4B,6B) being movable to perform a predetermined stroke; at least a working means (12) moved by m...
09/19/2000
5442933Refrigerator through the door ice dispenser
A through-the-door ice and cold water dispenser for domestic refrigeration units provides a housing positioned within a recess formed in the door insulation. The dispenser provides an actuation cradle formed with a smoothly curved concave surface in combi...
08/22/1995
5367878Transient energy release microdevices and methods
A microdevice in the form of an electrical switch. A microdevice for providing switching at a high repetition rate, including a cell divided into two chambers by a bistable movable membrane. A charge of gas in the cell and a source for directly heating th...
11/29/1994
5266779Fail safe control device
A fail safe temperature control device which consists of a nonelastic container or bulb adapted to be subjected to temperature changes, a capillary tube and a pressure responsive device. The container generally is located in the area in which the heat is ...
11/30/1993
4759189Self-limiting thermal fluid displacement actuator
A self-limiting electro-thermal actuator, capable of improved response time and continuous energization operation to produce a mechanical output uses plural heaters, e.g. a resistance heater and a positive temperature coefficient (PTC) heater, connected i...
07/26/1988
4754119Temperature regulating device, particularly for liquids or gases
A temperature regulating device with a hydraulic regulator for medium heating has a sensor tube in a closely surrounding protective jacket, which is connected directly in good heat conducting manner with a separate sensor heating element in the form of a ...
06/28/1988
4716277Electric hotplate
A large electric hotplate for restaurants and the like is heated by tubular heaters, which are placed in slots on the bottom of a cast hotplate body. An insulation with metal cover plates and a lower plate dish ensures the necessary pressing and thermal i...
12/29/1987
4691097Fail safe safety control device
A fail safe device for use in conjunction with a temperature sensing bulb, capillary, and control device in an oven or other heating appliance, which fail safe device will prevent a failure of the basic control device from permitting a critical overheat c...
09/01/1987
4641012Thermostat sensing tube and mounting system for electric beverage making device
The hot water container of a beverage-making device is provided with a removable cover sealed thereto and has arranged therein, an electric immersion coil-type heating element controlled by a running thermostat and a safety thermostat for heating a volume...
02/03/1987
4641011Improved safety thermostat system for electric beverage making device
The hot water storing container of a beverage making device is provided with a high wattage electric immersion heating element having a plurality of coil loops located in the lower portion of the container and extending around the interior of the containe...
02/03/1987
4638148Control system and control device for controlling a heating unit and method of making the same
A control system and control device for controlling a heating unit and method of making the control device are provided, the control device having a rod and tube temperature sensing unit for providing linear motion of a part thereof along a substantially ...
01/20/1987
4617803Temperature responsive control units
A temperature controlled switching device in which a first fluid filled temperature sensor responding to the temperature of heating or cooling means moves a first lever. A second sensor sensing the room temperature moves a second lever. The two levers bei...
10/21/1986
4602145Tap-off hot water system for electric beverage making device
The hot water container of a beverage making device is provided with a removable cover sealed thereto and has arranged therein an electric immersion heating element controlled by a running thermostat and a safety thermostat for heating a volume of cold wa...
07/22/1986
4596361Safety control
This invention relates generally to apparatus wherein a change in temperature is transmitted from a sensing bulb through a capillary to a control device. More particularly this invention is related to a novel, fail safe device for use in conjunction with ...
06/24/1986
4565920Fail safe thermal control device
This invention relates generally to thermal control apparatus wherein a change in temperature is transmitted from a sensing bulb through a capillary to a control device. More particularly this invention is related to a novel, fail-safe control device for ...
01/21/1986
4551613Rapid-heating electric water boiler
A rapid-heating electric water boiler includes a boiler vessel having an access opening at the lower portion thereof defined by a connecting flange. A boiler jacket surrounds the vessel but is spaced therefrom to provide a clearance filled with thermal in...
11/05/1985
4503321Control device for an electric hotplate
Apart from its conventional power main heating system, which is manually controlled by a power control device, an electric hotplate has an additional heating system, which is connected in parallel to the main heating system and in series with a temperatur...
03/05/1985
4503320Deep fat cooking temperature control system
An elongated temperature-sensing probe is positioned in a deep fat cooking vessel and is positioned so that a portion of the probe extends adjacent the electric heater submerged in the deep fat adjacent the bottom of the vessel, and a portion extends upwa...
03/05/1985
4467180Electric cooking system
A two-circuit automatic hotplate has a switch, which can be controlled both by a bimetallic strip of a power control device and by an expansion member of a hydraulic temperature sensor. The control heating system of the bimetallic strip is in series with ...
08/21/1984
4455477Electric boiling water heater
A boiling water heater incorporating a tank with electrical heating element and water level control wherein the supply of current to the element is controlled by the temperature in an inclined condenser tube extending upwardly from the top of the tank. Th...
06/19/1984
4394562Electric immersion heater mounting flange
An electric immersion heater for use in conjunction with tanks made by different manufacturers. The tanks are typically cylindrical and include an annular mounting flange at the upper open end provided with a specific arrangement of mounting apertures rec...
07/19/1983
4375029Control apparatus for thermal equipment particularly a heat engine
The invention relates to control apparatus for heat actuated devices of the type having a heating resistor and a spring biased motor member movable in response to heat generated by the resistor. A source of rectified AC voltage for the heating resistor is...
02/22/1983
4356385Apparatus for precisely regulating the paraffin temperature in an electrically heated tissue processor
Apparatus for precisely regulating the paraffin temperature in an electrically heated tissue processor comprises a sensor which is detachably fastened to the tissue processor by a clamp so as to be partially immersed in the paraffin. A controller, coupled...
10/26/1982
4354094Thermostatically controlled electric continuous water heating unit
An automatic continuous boiling water heater unit has a water heating tank incorporating an electric heating element near the bottom thereof and a float operated valve for feeding water to the heating tank from a level control tank mounted alongside the h...
10/12/1982
4273990Baseboard heater with high temperature cut-off switch
A baseboard heater for mounting against a wall and spaced from the floor comprises a casing having an open bottom and upper front side which permits the free upward and then forward free flow of air therethrough. An elongated electrical heating element mo...
06/16/1981
4242571Electro-thermal linear pull actuator
A linear pull actuator converts working fluid such as halogenated hydrocarbons into vapor by electrical heating element housed inside a shell, generating a vapor pressure against a rolling membrane secured inside actuator so as to respond to the vapor pre...
12/30/1980
4104507PTC heater for enhancing thermal actuator response
A positive temperature coefficient heater for enhancing the response time of thermal actuators is disclosed. The PTC heater is formed of a generally low resistance material that has an anomaly temperature above which the resistance of the heater increases...
08/01/1978
4081963Control circuit for a servo-motor
The invention relates to a control circuit for a servomotor of the type having a piston displaceable to selectable positions in one direction by an expansible substance heatable by an electric heating element and in the other direction by a return spring....
04/04/1978
4029941Electric heater assembly
A partitioning sleeve is positioned in the main body of a thermal actuator to form a separate internal liquid reservoir from which fluid may be supplied to the actuator heater. The heater is part of a heater sub-assembly that is sealed in an opening forme...
06/14/1977
4021643Immersion heater for aquariums
A thermostatically controlled safety heater for upright immersion in an aquarium includes a housing with an axially extending, heat-transmitting tube forming a chamber in which an electric heating element is disposed in radially spaced relation from the t...
05/03/1977
 
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