Abstract: A bearing temperature monitoring system for detecting a temperature of bearing grease within a bearing housing. The bearing temperature monitoring system comprises a housing mountable to the bearing housing, a power source selectively outputting an electrical current, and an electrical circuit. The electrical circuit includes a temperature sensor component electrically coupled to the power source. The temperature sensor component can be responsive to a change in temperature such that the temperature sensor component opens or closes the electrical circuit at a predetermined temperature even in the absence of an applied electrical current. The electrical circuit further includes an alert device electrically coupled to the power source and the temperature sensor component that outputs an alert in response to the temperature sensor component.

Abstract: A multiple output thermal switch device comprises a first switch unit having upper and lower surfaces, and a second switch unit having upper and lower surfaces. A plurality of terminal posts partially protrude from the upper surfaces of the first and second switch units. A locating plate supports the first and second switch units, with the locating plate having a top wall and a side wall that define a chamber. First and second actuator buttons protrude from the lower surfaces of the first and second switch units. A bimetallic plate is disposed in the chamber and is configured to contact the first and second actuator buttons when a predetermined temperature is reached. A case surrounds the first and second switch units, and the locating plate. The case has a bottom wall with a temperature sensing surface. The thermal switch device is selectable such that two set points are obtainable from a single snap-action of the bimetallic plate toward the first and second actuator buttons.

Abstract: A multiple output thermal switch device comprises a first switch unit having upper and lower surfaces, and a second switch unit having upper and lower surfaces. A plurality of terminal posts partially protrude from the upper surfaces of the first and second switch units. A locating plate supports the first and second switch units, with the locating plate having a top wall and a side wall that define a chamber. First and second actuator buttons protrude from the lower surfaces of the first and second switch units. A bimetallic plate is disposed in the chamber and is configured to contact the first and second actuator buttons when a predetermined temperature is reached. A case surrounds the first and second switch units, and the locating plate. The case has a bottom wall with a temperature sensing surface. The thermal switch device is selectable such that two set points are obtainable from a single snap-action of the bimetallic plate toward the first and second actuator buttons.

Abstract: Disclosed is a thermostat comprising: a housing; first and second switching sections installed within the housing; a bimetal installed within the housing to electrically insulate the first and second switching sections at a predetermined temperature; and upper and lower caps covering upper and lower opened ends of the housing. According to the thermostat, the first and second switching sections are controlled to simultaneously block a plurality of input terminals.

Abstract: A temperature control switch comprises a switch casing, which contains a springy slice, where the springy slice is provided with a thermostatic bimetal strip on its bouncing end. The thermostatic bimetal strip is provided with an electric heating device, where the first end and second end of the device are respectively connected in series between a first control terminal and the thermostatic bimetal strip. The elevated end of the thermostatic bimetal strip links one end of an uplifted metal slice to form an incompletely fixed link point, while the other end of the uplifted metal slice features a swaying contact, which corresponds to the contact point that a second control terminal joins. When subjected to heat, the one end of the thermostatic bimetal strip deforms, enabling the swaying contact to separate from the contact point, thus preventing the contact point from being damaged by the heat.

Abstract: A bimetallic thermostat with exchange contact is described comprising an external support covering (1) and an internal device (2) made up of a pierced base (3) provided with a packing (4) and with electric contacts (5, 15, 25, 35) with the outside, of a relay (8) electrically connected with said base (3) and of a sensitive thermostatic element (9) electrically connected with said relay (8). Said thermostat comprises in addition a printed circuit (7) interposed between the sensing element (9) and the relay (8).

Abstract: A trip-free manual reset thermostat includes a first fixed contact and a second fixed contact for an electric circuit and a bridging contact having a first end and a second end in contact with the first and second fixed contacts, respectively, in a normally closed position. The bridging contact is tripped open and is not in contact with the first and second fixed contacts at a predetermined higher temperature. When a pushbutton is in a depressed position, the bridging contact is pressed toward the fixed contacts and the second end of the bridging contact is caused to pivot around the first end of the bridging contact. The thermostat does not require a narrow manufacturing and assembly tolerance to achieve a trip-free function and has a simpler structure and is easy to manufacture.

Abstract: A motor protector (10) is shown having an elongated generally cup-shaped metallic housing (12) formed by a top wall (12a) and a side wall (12b) extending down from the perimeter of the top walls, the free end of which is welded to a header (14). The side and top wall have a rounded junction (12c) and a calibration rill (12e) is formed in the top wall from one end of the housing and through the rounded junction. An elongated thermostatic disc (16) is mounted in the housing and has a movable electrical contact (20) mounted at one end to be movable into and out of engagement with a stationary electrical contact (34) that is in turn mounted on a heater (26). A ceramic insulator plate (32) is interposed between the heater and the header.

Abstract: A switch device capable of increasing the operation speed at the time of reversion of contacts, thereby suppressing generation of arcs, and capable of increasing the contact pressure between the contacts, thereby reducing the bouncing of the contacts. A first rotor plate and a second rotor plate are operatively coupled with each other with a torsion coil spring and when the first rotor plate is rotated, a reversing force from the torsion coil spring causes the contact driving part to engage with or disengage from the contact plate.

Abstract: An alarm device for signaling when an object reaches a specified temperature. The alarm device includes a thermometer for detecting the temperature of the object. The device further includes a switch element which is closed when the thermometer indicates the specified temperature. The closed switch element triggers an alarm, such as a light or a buzzer, which will signal a person monitoring the temperature that the specified temperature has been reached.

Abstract: An electrical switch comprises a housing in which at least two power source terminals and a conductive piece are disposed such that the conductive piece is fastened at one end with one of the two power source terminals for electrically conducting or interrupting the two power source terminals. The conductive piece is connected with a link structure by which an external force causes the conductive piece to make contact with or separate from other one of the two power source terminals. A spring piece is fastened at one end with the housing and at other end with the link structure. The spring piece enables the conductive piece to jump so as to separate from other one of the two power source terminals at the time when the conductive piece is overheated.

Abstract: This invention is related to an auto tripping key switch, comprising a switch housing being formed with at least one guide groove and one slideway at an inner side thereof; a first contact plate and a second contact plate that are fastened to the switch housing, the first contact plate being provided with a first contact and the second contact being connected to a deformable bi-metallic strip provided with a second contact that opposes to and is spaced from the first contact at an appropriate distance. This invention further comprises a key that is provided with a first protrusion engaging the guide groove within the switch housing such that the key is only slidable along the guide groove, the key having an inner serrate edge; and a cylindrical insulative housing that is slidable in the switch housing and has an end being formed with a serrate edge matching the serrate edge of the key so as to subject rotation of the cylindrical insulative housing when the key is being pushed.

Abstract: The thermal circuit breaker and switch has fixed and movable contacts, and non-conductive contact and trip actuators. The movable contact is provided on the free end of a lever arm that normally biases the movable contact toward its open position. The contact actuator transfers movement from a rocker or operator to the movable contact arm when no overload condition exists. The trip actuator is L shaped and rotates in a socket when engaged by a thermally sensitive bi-metallic element so as to allow one end of the contact actuator to float freely, allowing the movable contact arm's bias to open the circuit. The bi-metallic element is so positioned as to engage and rotate the trip actuator only when the bi-metallic element is deformed due to an overheat condition that occurs with an overcurrent. A compression spring acts between the upstanding legs of the trip actuator and the underside of the rocker thus biasing the rocker to the `off` position and biasing the trip actuator to the `reset` position.

Abstract: This invention is related to an auto tripping multi-state key switch, comprising a switch housing being formed with at least one guide groove and one slideway at an inner side thereof; a first contact strip and a second contact strip both fastened to the switch housing, the first contact strip including a first contact and the second contact strip including a second contact; a bi-metallic strip having thereon a third contact and being connected to a connection plate include thereon a fourth contact; a key being provided with at least one first protrusion thereon for engaging the guide groove within the switch housing, the key having an end that is formed with a serrated edge; a rotary housing being provided with at least one second protrusion thereon for engaging the guide groove and the slideway allowing sliding movement of the rotary housing within the switch housing, the rotary housing having a top end being formed with a serrated edge that cooperates with the serrated edge at the bottom of the key, and th

Abstract: The thermal circuit breaker and switch has fixed and movable contacts, and non-conductive contact and trip actuators. The movable contact is provided on the free end of a lever arm that normally biases the movable contact toward its open position. The contact actuator transfers movement from a rocker or operator to the movable contact arm when no overload condition exists. The trip actuator is L shaped and rotates in a socket when engaged by a thermally sensitive bi-metallic element so as to allow one end of the contact actuator to float freely, allowing the movable contact arm's bias to open the circuit. The bi-metallic element is so positioned as to engage and rotate the trip actuator only when the bi-metallic element is deformed due to an overheat condition that occurs with an overcurrent. A compression spring acts between the upstanding legs of the trip actuator and the underside of the rocker thus biasing the rocker to the `off` position and biasing the trip actuator to the `reset` position.

Abstract: An overheat and overload sensing device includes a thermal sensor (such as a thermal regulator) and a breaker connected in parallel and used to cut off a power supply in case of current overload. The thermal sensor usually disposed near a heat source can respond automatically to cut off a local circuit in time in the case of overheat that will make the breaker become overloaded to break off power supply.

Abstract: A titterboard type switch with security structure, wherein a relay unit is disposed between two terminal legs connected with power wires and an electrothermal conductor is connected between the relay unit and one of the terminal legs, whereby when powered on, the electrothermal conductor is slightly heated and in the case of overload, the electrothermal conductor creates high temperature. The relay unit is disposed with a resilient movable contact pushable by a sliding member for controlling whether the movable contact contacts with the other terminal leg or not. The sliding plate is pushed by a swinging plate which is shifted by a push button via a linking unit.

Abstract: The invention relates to an electrical switch having a contact system which includes a switching contact and at least one stationary contact. The stationary contact has a body and a contact surface which interacts with the switching contact. Furthermore, the stationary contact is arranged on a contact support which has a first wide side and a second narrow side approximately at right angles thereto and in which a recess is located in the first side, which recess has an opening, which faces the switching contact, on the second side. The body of the stationary contact is inserted into the recess in such a manner that the contact surface of the stationary contact is located on the second side. The stationary contact is designed as a bimetallic contact made of a first material for the body and of a second material in the form of a contact facing on the body. The bimetallic contact is arranged as a prefabricated part, with the contact facing as the contact surface on the contact support.

Abstract: An automatic water supply shut-off system includes a shut-off valve movable between opened and closed positions in a line leading from the water supply. An electric motor actuates the shut-off valve and is electrically connected to a power source through an electric circuit so that when the circuit is closed the electric motor actuates the shut-off valve into the open position to allow water flow through the line. At least one temperature sensitive switch is disposed in the electrical circuit and is operative to normally close the electrical circuit above a predetermined temperature and to open the electrical circuit at or below the predetermined temperature, whereby the shut-off valve moves to the closed position.

Abstract: An electromechanical thermostat for controlling the on/off cycle of a heating/cooling unit. The thermostat has a temperature sensing element with a variable position according to the sensed temperature. Associated with the sensing element is a switch member that provides on/off signals in response to the position of the sensing element. The thermostat has mechanical heat anticipation to control the generation of the on/off signals. In the preferred embodiment the mechanical heat anticipation is accomplished by a stepper motor which varies the position of either the sensing element or switch member to simulate thermal heat anticipation. The thermostat also has a mechanical structure to reduce or eliminate thermostat droop. Preferably this structure includes a control circuit to detect the duty cycle of the heating/cooling unit and mechanically and automatically adjusts the thermostat set point.

Abstract: A three-stage temperature switch, preferably for hot water heaters, having regulator contacts in the 1- and 2-branches of the switch, wherein the operating thermostat and the safety thermostat are connected to the casing of the three-stage switch for, respectively, maintaining an operating temperature by connecting and disconnecting an electric circuit via an operating contact in the L-branch of the switch, and monitoring a higher, critical temperature for disconnecting the electric circuit via switching contacts in the 1-, 2- and L-branches of the switch if the critical temperature (e.g., 95.degree. C.) is exceeded. The switching contacts are constituted by the regulator contacts and by a switching contact on the L-branch, which three contacts may be simultaneously actuated by an adjacent body which has mechanical contact with and is moved by the safety thermostat.

Abstract: A probe thermostat is disclosed having a positive-off element included in the switch portion of the thermostat which prevents the switch from being closed when the variable control means of the thermostat is set to its extreme or "off" position. The positive-off element assures that the switch will be open even if a mulfunction occurs in the thermostat which would otherwise result in closing of the switch and undesirable current flow to the heating element. The illustrated form of positive-off element comprises an insulative threaded fastener attached to a portion of the base of the thermostat which engages one of the contact arms to hold it away from the other contact arm when the variable control means is set to its extreme "off" position.

Abstract: An instrument which detects a rise in temperature of a surface; the instrument including a bimetal sensor disc which contacts a surface that is being serailled by the instrument, and which, when becoming overheated, causes the disc to snap into engagement with a contact strip, thus closing a warning alarm; and the instrument having adjustments to set off the alarm at a selected temperature.

Abstract: A two-bimetal thermostat provides double motion for enhanced contact actuation and minimum differential. Two bimetal plates are pivotally supported at one end to extend generally parallel. The other, deflectable ends of these bimetal plates, one of which is shorter than the other, have right-angle bends and are biased by a compression C-spring for overcenter snap-action. These deflectable ends are coupled by drive pins to respective contacts of a spring-biased contact pair to be free of the bimetal plates when closed and are actuated thereby to open condition. Differential adjustment is accomplished by adjusting one bimetal plate longitudinally to vary the C-spring load thereby to correspondingly vary the temperature differential between contact closure and opening. Range adjustment is attained by turning a knob which acts through a cam on the pivotal mounts to vary the angle between the bimetal plates thereby to require more or less bimetal bending for contact actuation.

Abstract: A manual electric cigar lighter for automobiles and the like, comprising a holder device presenting an outwardly facing socket, and a unique ignitor plug receivable in the socket. Disposed at the inner end of the plug is a heating element which is electrically connected in circuit with a heat-responsive switch that is also carried by the plug. The socket in addition to its grounding circuit has a "hot" contact which is engageable with a cooperable contact on the plug to close the circuit through the heating element. The plug comprises a manually operable part by which the heat-responsive switch can be closed, thereby to complete the heating circuit through the element. A bimetallic member is also carried by the plug, engageable with one of the switch parts and always normally lying in a closed-circuit position when cold.

Abstract: A thermally powered rotary actuator is disclosed which is used for positioning a shaft in first and second positions which are disposed 180.degree. apart. A pair of heat extensible springs are attached to the shaft and to the frame of the rotary actuator for selectively rotating the shaft from one of its two positions to the other position upon the application of heat to one of the heat extensible springs. The heat extensible springs are preferably constructed from the alloy 55-Nitinol. In the preferred embodiment, a detent mechanism is provided for locking the rotatable shaft in its two rotary positions.