Abstract: A thermal overload relay includes a main bimetal for detection of an overload current, a shifter associated with the main bimetal, a release lever working according to a displacement of the shifter, a contact reversing mechanism for changing-over contacts by reversing action caused by rotation of the release lever, and a manipulation structure for manipulating the release lever and the contact reversing mechanism. The manipulation structure includes a reset bar for returning the contact reversing mechanism to an initial state. The reset bar is arranged to change-over between a manual reset state in which the reset bar can be pushed-in and an automatic reset state in which the reset bar is pushed-in and turned from the manual reset state and held in that state.

Abstract: A thermal overload relay is provided with an external case, and an adjustment dial with a cam inserted into an adjustment dial insertion hole provided in the external case for adjusting a settling current. A press-fitting section is provided at one of the adjustment dial and the adjustment dial insertion hole, and a locking section is provided at the other of the adjustment dial and the adjustment dial insertion hole. The press-fitting section is press-fit and retained in the locking section.

Abstract: A dual contact thermostat includes a bimetallic strip that partially controls two sets of contact points. An adjustable temperature actuator engages the contact points whereby the activation temperature of each set of points when the points are first closed is determined by the bimetallic strip in combination with the adjustable temperature actuator.

Abstract: The present invention relates to a mobile phone including a main printed circuit board. A first connector and a second connector are welded respectively onto a first predetermined location and a second predetermined location of the main printed circuit board, wherein a first power supply and a second power supply are provided respectively by the first connector and the second connector. The main printed circuit board includes a first portion corresponding to a keypad module and a second portion corresponding to an LCM module. The mobile phone also provides a holder, wherein a space is included in the holder to accommodate the LCM module. A slit is formed at a predetermined location of the holder. The mobile phone further includes a secondary printed circuit board carrying a plurality of LEDs to provide a back light source. The secondary printed circuit disposed within the aforementioned slit includes a first contact point and a second contact point.

Abstract: An apparatus (1) for compensating the maladjustment of a power control means (2) by changes to the ambient temperature operates at least on a partial path against the flat spring (31) of a correcting device (30), after which at least part of the ambient temperature sensor (20) of the apparatus (1) is fixed against further deflection by a stop (34), so that the actual values of the power setting correspond to the set desired values substantially independently of the ambient temperature. For the correction spring (31) or for the stop (34) it is not necessary to provide a separate component, if use is made for the same of the already present twisting preventer (28) or a carrier (18).

Abstract: Cooling rings of resilient thermally conductive material are installed over a current limiting fuse prior to insertion in a canister housing. The cooling rings provide a heat conduction path from the fuse to the canister wall, thereby reducing heat build up within the canister. The cooling rings are provided with recesses to reduce pressure build-up during fuse insertion in a canister.

Abstract: A thermostat is disclosed which has a moveable backstop in order to fulfill a requirement in many countries that a 3 millimeter contact gap be provided for the thermostat to qualify as an electrical disconnect. The thermostat is comprised of a setting wheel having a ramp formed thereon, a lever, a plunger and a backstop slidably connected to the frame of the thermostat. The lever contacts the ramp on the setting wheel and is moved by rotation of the setting wheel. One end of the plunger is in contact with the lever, the other end being in contact with the backstop. When movement of the setting wheel causes movement of the lever, the plunger is moved in an axial direction thereof, thus causing movement of the backstop. The ramp is positioned on the setting wheel such that the backstop is moved when the setting wheel is turned to an off position.

Abstract: A heater for heating water in an aquarium tank is provided with a thermostat which includes a bimetal strip carrying one contact and another strip carrying another contact. Upon deformation of the bimetal strip in response to temperature changes, the contacts are closed to connect the heater with an electrical supply circuit. The distance between the contacts is initially set by a rotatable cam acting on a curved portion of the bimetal strip. A cylindrical body which supports the cam to rotate the latter is provided with a helical groove in which is engaged an indicator captured in an elongated axial slot formed in a support of the cylindrical body. The support has at least one scale on its surface visible through a glass container of the heater. When the cam is rotated to change the distance between the contacts this change is indicated by the position of the indicator on the scale.

Abstract: An integral infinite switch is provided for controlling a first coil and a second coil of a radiant heating element. The integral infinite switch includes a first switch assembly for opening and closing an electrical path between a first AC electrical line L1 and a first end of the first coil. The first AC electrical line L1 is directly connected to a first end of the second coil. The integral infinite switch includes a second switch assembly for opening and closing an electrical path between a second AC electrical line L2 and a second opposite end of both the first coil and the second coil. A spindle is rotatable between an OFF position, a first range of ON positions for the second coil and a second range of ON positions for the first coil and the second coil. A cam member is mounted on the spindle for rotation with the spindle.

Abstract: An electric switching device (1) in the form of a timed power control device with an appliance switch (6) operated by a heated thermobimetal (15) and in the form of a snap switch has an adjusting device (39) for modifying the distance between the opposite contact (36) and the counter-stop (37) for the movable switching contact (34), operated simultaneously with the setting of the different setting ranges of the switching device in such a way that in the low setting ranges the switching hysteresis of the appliance switch (6) is made smaller and in the higher setting ranges larger. Thus, in particular the smaller values of the relative switch on duration of the appliance switch (6) can be set much more accurately, so that there is a very precise power control in the low setting ranges.

Abstract: A thermostatically controlled electric heater for aquariums includes within an electric waterproof envelope, a heating element and a working unit regulating the temperature, moving axially in order to vary the rest position of a bimetal strip which, depending on its deformation, opens and closes the supply circuit of the heating element. The regulation unit (3) is provided with a threaded pin (13), the end resting against the bimetal strip (7) and with a cylindrical body (11), provided on the side surface with a helical line (12) dividing the surface of the cylindrical body into two differently colored portions (12) covered by a screen (18) provided with a longitudinal slot (19) through which a short portion of said helical line (12) is visible. A grauated scale is provided along the slot and cooperates with the visible portion of the line to indicate the set operating temperature of the heater.

Abstract: A device for indicating that a sensed temperature has reached a certain selected level and method of making the same are provided, the device comprising a housing carrying an electrical switch unit for operating an indicator to one condition thereof when the switch unit is closed and to another condition thereof when the switch unit is open. The switch unit comprises a first movable contact unit and a second movable contact unit which when in contact with each other close the switch unit and when out of contact with each other open the switch unit. The first contact unit is moved relative to the second contact unit in relation to the sensed temperature. A selector unit is rotatably carried by the housing for selecting the certain level and has a setting portion operatively interconnected to the second contact unit to position the same relative to the first contact unit in relation to the selected level.

Abstract: A dual stage thermostat for an electrical space heating system in which there are two microswitches connected in parallel and operated by a common bimetallic strip. The first switch when closed connects a heating element to a power supply through a diode which reduces by half the power applied to the element. The second switch when closed connects the heating element directly to the power supply. The temperature at which the second switch opens is set about 1.5.degree. F. lower than that at which the first switch opens. Thus, as the room temperature approaches the desired temperature, the heater element is switched from full to half power, producing less temperature overshoot and saving energy. The thermostat may be used with any standard two wire heater.

Abstract: A temperature responsive switch has a bimetal-and-spring arrangement carrying a movable contact and having a first stable state urging the movable contact towards a stationary contact into an ON position and a second stable state urging the contacts away from one another into an OFF position; and a setting shaft setting the bimetal-and-spring arrangement to a desired temperature value at which the bimetal-and-spring arrangement displaces the movable contact from the ON position into the OFF position. The setting shaft has a relatively low temperature setting range and a relatively high temperature setting range. The switch further has a stopping mechanism having an operative and an inoperative state for preventing the bimetal-and-spring arrangement from assuming the second stable state in the operative state of the stopping mechanism and for allowing the bimetal-and-spring arrangement to assume the second stable state in the inoperative state of the stopping mechanism.

Abstract: An electric oven toaster construction wherein a unique rotatable cam controls the bake, toasting and broiling modes of the oven toaster and simultaneously sets the threshold temperature of a thermostat switch during toasting, baking and broiling. The rotary cam includes a rearwardly extending rod portion having a radially outwardly extending lobe for cooperating with a cam follower portion of a bake switch for opening the bake switch when a bake operation is set and closing the bake switch when a toast operation is set. The rotatable cam also includes a circular disc portion positioned in front of the rod portion and integrally formed therewith. The circular disc portion has a cam surface that extends rearwardly and is in sliding engagement with a thermostat cam follower blade to set the thermostat cam follower for a particular toast color.

Abstract: A thermostat has a temperature responsive element coupled to a pivoted arm which closes the circuits to operate temperature control apparatuses. A slotted cam with leaf spring members projecting from one end is slidably mounted to move toward or away from the pivoted arm in response to removing or replacing a weight which operates a cam follower element connected to the slotted cam. When the slotted cam is positioned away from the pivoted arm, the thermostat operates in conventional fashion. When the slotted cam is positioned toward the pivoted arm, the arm has the additional load of the leaf spring members to overcome, and the set point temperature of the thermostat is changed.

Abstract: A stacked snap-acting thermostat assembly in which a modification is provided of a single structural bracket extending over all the blades and mounted on and above the supported end with an enlarged integral portion having a bore therethrough to form an elongated bearing guide and support a control shaft rotatably in the bore contacting the tension part of the first element to position the upper spring blade.

Abstract: A stacked thermostat assemby includes a lower heat deformable blade, a conductive intermediate stiff spring blade, and a conductive upper less stiff spring blade with all the blades being supported, secured, and spaced apart at one end by interposed insulators. Electrical contacts on the conductive blades include structure for transmitting movement between the heat deformable blade to the upper blade to make and break an electric circuit and control heat to a medium sensed by the thermostat such as an iron soleplate on which the thermostat may be mounted. To this standard construction an improvement is provided in the temperature setting control mechanism of single structural integral bracket extending over the blades and mounted on and above the supported end, the bracket having an enlarged integral portion on its free end. A smooth unobstructed bore in the integral portion forms an elongated bearing guide between the ends of and over the blades.

Abstract: To a standard stacked thermostat assembly construction as used in an iron an improvement is provided in the temperature setting control mechanism of a single structural integral bracket extending over the blades and mounted on and above the supported end, the bracket having an enlarged integral portion on its free end. A smooth unobstructed bore in the integral portion forms an elongated bearing guide between the ends of and over the blades. In the bore a control shaft is rotatably supported and extends through an opening in the upper blade to position the intermediate blade and set temperature. An arcuate cam surface with end stops is formed directly on the integral portion facing the upper blade and a cam follower is provided on the control shaft and biased by the intermediate blade against the cam surface which extends over an arc of substantially 180.degree.-210.degree. and has a short arc angular rise at one end adjacent a stop.

Abstract: An electrical energy regulator of the kind including an electrically energizable heater which, when energized, causes deflection of a bi-metal actuator which in turn influences operation of switch means. The switch means controls supply of electrical energy between input and load terminals which are respectively connected, when in use, to a power source and power using means. The switch means includes two heater contacts which must be closed to enable energization of the heater, and two control contacts which must be closed to enable connection of the input and load terminals. The switch means also includes a spring blade which is connected to the input terminal and carries one of the heater contacts and one of the control contacts. The blade is movable between two operative conditions in which the heater contacts are open and closed respectively, and the control contacts are closed and open respectively.

Abstract: Thermostats for use in electrically heated appliances have a positive off position and are adapted for transition to a low temperature on position within a small amount (approximately one radian) of control shaft rotation. The thermostats comprise a stacked blade assembly including a lower bimetal temperature responsive blade, an intermediate stiff spring blade and an upper less stiff flexible spring blade, with the spring blade having juxtaposed switch contacts thereon and the bimetal blade operating to separate the switch contacts when the set temperature is attained. A control bracket mounted above the stacked blade assembly defines an opening through which a control shaft extends, the control shaft butting against the stiff spring blade and positioning it. The shaft mounts a cam and the control bracket has a depending cam follower for the cam, wherein the spring blade urges the cam against the cam follower.

Abstract: A thermally actuated switch including a motive member which is adapted to move one contact either toward or away from its opposed mating contact in response to an increase or decrease in pressure in a fluid actuating heat sensing system, the fluid system translating temperature into fluid pressure. The assembly further includes a hydraulically actuated high temperature switch which is adapted to be rendered responsive to a preselected temperature, as for example, 550.degree. to 600.degree., the switch being utilized to control an external circuit, as for example, the deactivation of a door lock solenoid. The switch assembly includes two fixed contacts, the positions of which are fixed in response to the position of a cam element. A pair of mating movable contacts are controlled by a temperature responsive assembly, which temperature responsive assembly reacts in response to the sensed temperature of an oven.

Abstract: A toast load selector mechanism for use with toasters accommodating varying toast loads of from one to a plurality of bread slices or other food items for toasting and having a toasting time interval timer including a manually operable brownness control knob for adjusting the toasting time interval, the brownness control movable through an adjustment range between a first position setting a minimum time interval for toasting a minimum toast load to the lightest brown condition and a second position setting a maximum time interval for toasting the maximum toast load to the darkest brown condition. The toast load selector mechanism comprises a toast load selector member which is mounted concentrically with the brownness control knob, the toast load selector member defining first and second stops limiting the adjustment range of the brownness control to a subrange applicable to a given toast load selected by the toast load selector member.

Abstract: An infinite switch for controlling the temperature of a stove heating element is provided with a visual indicator energized when the heating element is energized. The switch has terminals connected to an electrical power source and includes a housing, a cover with a central aperture, and a rotatable, hollow spindle extending through the aperture and into the housing. A cam mounted on the spindle interacts with two sets of switch contact elements. One set of contact elements is movable by the cam from an open to a closed position thereby connecting the power source with the second set of contact elements. The second set of switch contact elements are adjusted by the cam and are operated by a thermomotive element in heat transfer relation with a thermal heating device. The thermomotive element cycles the second set of contacts between open and closed positions alternately to energize and deenergize the heating element. The proportion of on time during each cycle is determined by the position of the cam.

Abstract: Thermostatic control apparatus comprising a switch, a switch body housing the switch, and an actuator arm extending from the switch body with the arm being movable between the first and second positions for opening and closing the switch. A thermostatic bimetal strip is spaced from the switch body, with one end of the strip being mechanically linked to the actuator arm. A support extends from the body for supporting the other end of the strip. A selectively operable adjustment cam engages the strip between its ends on the face of the strip adjacent the body, this cam being operable for adjusting the thermostatic strip to open and close the switch at various preselected temperatures. A spring biases the strip into engagement with the cam whereby changes in temperature of the strip cause the arm to move between its first and second positions thereby causing the switch to open and close.

Abstract: A condition sensing device, for mounting on a support structure in one of at least two positions where, for example, the positions are at substantially right angles to one another, comprises a set point lever and cam arrangement profiled in a manner to properly adjust the set point of the device in any of the positions of the device even though the position of the lever and cam arrangement remains fixed with respect to the support structure. This operation is accomplished by allowing the lever and cam to assume one of at least two positions with respect to the device and by profiling the cam surface to give proper set point adjustment in any of its positions; that is, the cam will have a camming surface for each of its possible positions.

Abstract: A thermally responsive electrical switch characterized by low cost and long reliable service life includes a precalibrated snap-acting thermostatic member which is positioned outside the electrical circuit of the switch in heat-transfer relation to heater terminal means in the switch, whereby the member is economically mounted without requiring calibration during or after switch assembly and is arranged to avoid the deleterious effects of high current surges in the switch but is responsive to the occurrence of selected current levels in the switch to open the switch with snap action. Preferably spring biased cam means cooperate with the snap-acting member to permit initial snapping movement of the member while the member is free of significant loading, thereby to assure that such snapping movement occurs at precisely predetermined temperatures throughout the life of the switch.

Abstract: A thermally actuated energy regulator of the kind including a switch controlled through a heat responsive actuator in the form of a bi-metal assembly. A lever is arranged to act between the actuator and the switch so as to actuate a switch in response to pressure applied to the lever by deflection of the actuator, which deflection occurs when the heater associated with the actuator is energized. The lever reacts against a fulcrum, the position of which is adjustable through a cam, and that adjustment permits variation of the amount of deflection of the actuator necessary to cause operation of the switch through the interacting lever. The switch, actuator and cam are secured to a body section in fixed relationship so that calibration of the regulator is simplified.