Class 337/382 - With longitudinally expansible solid element

Subclass of Class 337 - Electricity: electrothermally or thermally actuated switches
Definition: Subject matter wherein the thermally responsive switching
No. of patents: 32
Last issue date: 12/14/2010

Number	Title	Issue Date
7852190	Shape memory alloy (SMA) actuation mechanism for electrical switching device An electrical switching device includes a housing, a base attached to the housing, two non-actuated electrical contacts supported in the housing, and an actuator assembly contained within the housing. The actuator assembly includes a movable contact for engaging the...	12/14/2010
7220051	Shape memory alloy temperature sensor and switch A switch, such as an electromechanical or optical switch, whose state is responsive to temperature history, for example temperature excursions above or below a critical temperature. An element of the sensor made from shape memory alloy changes shape when exposed, ev...	05/22/2007
7119654	Temperature sensor A temperature sensor for radiant heating units with a heating coil disposed in a cup includes a tube with a first end connected to a housing of a switch with a movable contact cooperating with stationery contacts in the housing. A two-section rod, which extends into...	10/10/2006
6985651	Thermal actuator with offset beam segment neutral axes and an optical waveguide switch including the same A thermal actuator comprises a substantially straight beam. The beam has a beam length and a beam mid-point. The beam comprises a plurality of beam segments with beam segment lengths. Each beam segment has a beam segment neutral axis, thus forming a corresponding pl...	01/10/2006
6985650	Thermal actuator and an optical waveguide switch including the same A thermal actuator comprises a substantially straight beam. The beam has a beam length and a beam mid-point. The beam comprises a plurality of beam segments. Each beam segment has a beam segment width, the beam thus forming a corresponding plurality of beam segment ...	01/10/2006
6983088	Thermal actuator and an optical waveguide switch including the same A thermal actuator comprises a plurality of substantially straight and parallel beams arranged to form a beam array. The midpoint of each beam is attached or coupled to an orthogonal coupling beam. Each array beam has a beam heating parameter with a corresponding be...	01/03/2006
6744344	Compact disconnect switch A disconnect switch for the load circuit of a vehicle battery, includes a movable contact element (81) and a stationary contact element (64) that are linked with a locking mechanism. For releasing the locking mechanism a shape-memory alloy release elem...	06/01/2004
6724294	Temperature limiter A switch head is disclosed that can be attached to a temperature sensor having elongated expansion elements with different thermal expansion coefficients. The switch head further includes a device for measuring the displacement of the expansion elements relative to ...	04/20/2004
6583711	Temperature sensitive circuit breaker A temperature sensitive circuit breaker includes two contacts electrically mounted on a circuit board and an insulating pivot seat attached to the circuit board between the two contacts. A lever has a first end pivotally connected to the pivot seat and co...	06/24/2003
6504467	Switch integral in a semiconductor element In a semiconductor element, in particular for switching an electrical connection, a substance which expands to a great extent when heated is arranged on the element in such a way that if the element is overheated, the electrical leads of the element are d...	01/07/2003
6404321	Actuator An actuator for a device such as a valve controlling coolant for an automotive engine. The actuator has a base body on which is supported an electrically heatable thermostatic operating element having an operating piston that moves a motion transfer membe...	06/11/2002
6239686	Temperature responsive switch with shape memory actuator A temperature actuated switch having a resilient switch blade that is movable between open and closed positions and extends perpendicular to an elongated actuator of shape memory alloy. The actuator has an elongated deformed shape at normal temperatures a...	05/29/2001
6084501	Thermal cutoff switch A self-contained unitary thermal cutoff switch assembly having a hollow sealed switch housing formed by a collector and a lid that serve as the switch contacts. Separating the collector and the lid is a plastic insulating liner that generally follows the ...	07/04/2000
6046666	Thermal actuator A known thermal actuator includes a capsule, which contains a diaphragm controlling the position of a stem. A thermal expansion substance like wax is contained in the capsule which operates as a thermostat in a thermostatically controlled valve such as a ...	04/04/2000
5825276	Temperature sensor with improved adjustment mobility A temperature sensor includes a spring-biased tube of relatively low thermal expansion and a rod arranged in the tube and having relatively high thermal expansion for cooperation with a contact mechanism to control a heat-operated system. Secured to the t...	10/20/1998
5754090	Thermostat having a temperature sensing element which includes a member having a negative coefficient of thermal expansion A thermostat includes a valve for controlling gas flow, an actuator for controlling operation of the valve, and a temperature sensing element. The temperature sensing element comprises two members, one of which is made of a material having a positive coef...	05/19/1998
5627507	Temperature control device with a spring-biased stem and a switch spring of bridge-like configuration A temperature control device includes; a spring-biased stem guided in a p and having a temperature expansion coefficient which is different from the temperature expansion coefficient of the pipe, with the stem acting via a plunger and a switch assembly u...	05/06/1997
5294907	Control device, parts therefor and methods of making the same A control device, parts therefor and methods of making the same are provided, the control device having a temperature sensing unit comprising a rod and tube means utilizing a heat expandable and contractible polymeric member disposed between one end of th...	03/15/1994
5208574	Temperature sensor A rod sensor (1) has in the vicinity of a sliding guide (17) of an outer tube (2) a bolt-like, smooth abutment (4) for an inner rod (3), which prior to the insertion of the inner rod (3) and prior to the constructional joining of the temperature sensor (1...	05/04/1993
5132657	Temperature limiting control for an electric heating device A temperature limiting control for an electrical heating appliance such as a ceramic hob comprises switch means (11) and a temperature sensor (10) connnected thereto. The temperature sensor comprises an elongate reference member (12) of ceramic or other l...	07/21/1992
5113170	Temperature switch A temperature switch for limiting the temperature of a glass ceramic plate against the radiation emanating from light and dark radiators has a sensor, which comprises a metallic sensor tube and an inner ceramic rod. Over the sensor is drawn a steatite tub...	05/12/1992
5077537	Thermostatic probe switch apparatus A probe thermostat is shown having a single, stamped metal channel having a first coefficient of expansion coupled to a rod having a second, different, coefficient of expansion. An electrically insulating block is mounted on the channel which in turn cant...	12/31/1991
5055819	Temperature switch A temperature switch, used more particular as a temperature limiter for a radiation heating element (11) for heating a glass-ceramic plate (12), has radiation heaters (13, 14). Its rod-shaped temperature sensor (20) has an expansion rod (24) which is disp...	10/08/1991
4917006	Expansion thermostat for cooking grill An expansion thermostat adapted for regulating the temperature of a cooking surface. One end of the cooking surface is secured at one end of a container. Mounted to the other end of the container is a switch which controls the heat. When the cooking surfa...	04/17/1990
4754253	Adjustable temperature thermostat A thermostatic switch is shown having a body supporting a temperature sensing probe formed of a rod of one thermal coefficient of expansion connected to a channel of a different thermal coefficient of expansion. The difference in expansion between the rod...	06/28/1988
4695816	Thermal cut-out In a thermal cut-out for a heating means, e.g. a glass ceramic cooking unit, a signal switch and a circuit breaker are operated by means of a temperature sensor via a transfer member externally surrounding the switches and whereof the actuating member the...	09/22/1987
4577176	Temperature regulating device A temperature regulating device is provided for electrical cooking appliances wherein the heat is provided by heating bodies, or elements, for plural heating zones. The device has a heat resistant bar or rod of high thermal expansion. The rod is enclosed ...	03/18/1986
4400679	Snap acting switch for thermostats A snap acting switch structure for thermostats or the like is disclosed in which the switch's movable contact is supported on a pair of arms the first of which is placed in compression and the second of which is placed in tension by a bistable spring syst...	08/23/1983
4388520	Electric cookers with warning lights A glass ceramic hob electric cooker is provided on each of the radiant heaters thereof with a temperature responsive element such as a bi-metallic switch or a thermistor, which element is arranged adjacent to or within an opening which communicates with a...	06/14/1983
4215332	Probe thermostat with swivel A probe-type thermostat is disclosed in which the probe is mounted for swiveling movement in a manner in which the thermostat calibration is not adversely affected. The probe includes a tube mounted on the thermostat base for swiveling movement about a fi...	07/29/1980
4166995	Thermostatic snap switch This invention relates to a thermostatic snap switch and in particular it relates to a switch of the type which has a temperature sensing probe containing an actuating element for the switch....	09/04/1979
4011536	Liquid sensor A sensor which utilizes the difference in thermal characteristic between two fluids to detect the presence of one fluid or the other. A continuously heated thermal expansion element activates a switch. When the element is brought in thermally conductive c...	03/08/1977

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Class 337/382 - With longitudinally expansible solid element