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| Number | Title | Issue Date |
| 7741947 | Dual contact bimetallic thermostat 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 deter... | 06/22/2010 |
| 7378934 | Negative rate switch methods and systems for resilient actuating device Methods and systems for actuating a negative rate switch. A negative rate switch comprising a plunger and a resilient actuator thereof can be provided, wherein a highest plunger force occurs at a free position and a lowest plunger force occurs at a full over travel ... | 05/27/2008 |
| 7372356 | Concealed adjustable temperature switch A concealed adjustable temperature switch includes a fixed plate, an adjusting block threadedly engaged with a screw hole of the fixed plate, a bimetal plate, and a metal plate. Mounted on the adjusting block are upper and lower positioning rings and a fixing ring b... | 05/13/2008 |
| 6639503 | Methods and apparatus for mounting a bimetal coil in a thermostat An apparatus is described for mounting a bimetal coil in a thermostat having an anticipator operable via an anticipator circuit. The apparatus includes an insulating member configured to insulate the coil from the anticipator circuit. The apparatus also i... | 10/28/2003 |
| 6512434 | Circuit breaker with shift guide A thermal overload open-phase tripping device includes in a case bimetals corresponding to different phases; a differential shifter mechanism composed of a push shifter and a pull shifter, linked to operating ends of the bimetals, and an interlocking plat... | 01/28/2003 |
| 6206295 | Comfort thermostat A "designer" thermostat also known as the "comfort-stat" which is mountable on the wall or the like having a first temperature range bar extending from a low point of 70 to a high point of 78, appearing in red, and a second temperature range bar extending... | 03/27/2001 |
| 6135633 | Method for thermally calibrating circuit breaker trip mechanism and associated trip mechanism A method for adjusting the calibration of a circuit breaker trip mechanism including a terminal element, a bimetal element connected thereto, and a trip bar. Laser energy is applied to lanced or pre-bent surfaces of the terminal element to thermally induc... | 10/24/2000 |
| 6095678 | Method of calibrating a thermal trigger for an electrical switching device A method of calibrating a thermal trigger for an electrical switching device starts with fastening bimetal strips (1) for each phase in the housing of the trigger. Thereafter, the bimetal strips (1) are heated-up with a predetermined calibration current f... | 08/01/2000 |
| 6078246 | Snap acting thermal switches and method of assembling and adjusting thermal switches A method and apparatus for setting striker pin length and armature spring force in a thermal switch. An armature support structure is deformed in order to adjust armature spring force with the result of a spring force which remains constant over time and ... | 06/20/2000 |
| 6030114 | Method for thermally calibrating circuit breaker trip mechanism and associated trip mechanism A method for adjusting the calibration of a circuit breaker trip mechanism including a terminal element, a bimetal element connected thereto, and a trip bar. Laser energy is applied to lanced or pre-bent surfaces of the terminal element to thermally induc... | 02/29/2000 |
| 6005471 | Thermal protector for electric motors A thermal protector includes a header plate and a metal housing having an open end hermetically welded to an peripheral edge of the header plate. The housing is formed into a generally slender shape so as to be suited for mounting on end turns of a stator... | 12/21/1999 |
| 5973586 | Temperature sensitive tip-switch In one embodiment of the present invention, a temperature sensitive tip switch comprises a first conductive arm, a second conductive arm disposed in a parallel, spaced apart relation beneath the first conductive arm, a third conductive arm disposed in a p... | 10/26/1999 |
| 5894259 | Thermal trip unit with magnetic shield and circuit breaker incorporating same A solenoid type magnetic trip assembly for a molded case circuit breaker includes an armature biased against an adjustable stop by a tension spring to set the initial gap for the magnetic trip, so that the spring bias remains constant for the full range o... | 04/13/1999 |
| 5825294 | Thermostatic heat detector A heat detection and alarm unit is provided including a housing with a front face, a rear face, a top face, a bottom face and a pair of side faces coupled therebetween defining an interior space. A speaker is situated within the interior space of the hous... | 10/20/1998 |
| 5574421 | Snap disc thermostat and self calibrating assembly method A thermostat includes a case assembly with two terminals and movable contacts, one of which is on a resilient blade to open and close a circuit through the terminals. A bimetal disc actuates the blade by heating to open the contacts. A base defines an int... | 11/12/1996 |
| 5550524 | Thermostat range limit device An adjustable thermostat range limit apparatus consists of a base member having a pair of adjustable temperature limit means. The thermostat range limit apparatus is attached in the proximity of a conventional thermostat so that the adjustable temperature... | 08/27/1996 |
| 5548266 | Thermostat construction A thermostatic switch construction including a housing having a switch arm mounted for movement inside. A bi-metallic snap disk is mounted in the housing and movable in response to temperature change with snap action between two positions of stability. A ... | 08/20/1996 |
| 5138297 | Fused electrical switchgear Electrical switchgear apparatus comprises a base, a switching circuit element supported by the base and including at least one movable circuit element part, a thermal trip supported by the base for tripping motion in a given direction with respect to the ... | 08/11/1992 |
| 5060486 | Thermostat control for providing multiple temperature ranges in a single refrigeration compartment A rotatable control for a broad range, temperature controlling thermostat for a refrigeration compartment of a refrigeration unit enables operation of the refrigeration unit in one of several different operational modes. For example, the refrigeration uni... | 10/29/1991 |
| 4860435 | Calibration process for bimetallic circuit breakers In the manufacture of a circuit breaker comprising a cover having a snap action blade attached thereto, with a movable contact mounted on the snap action blade, the optimum position of the movable contact with respect to a preselected locus is first deter... | 08/29/1989 |
| 4825186 | Process for the adjustment of a thermal switch A transfer element (8) is provided in a thermal switch (1) with a housing (2), power supply lines (4) and contacts (5) and (7), with a contact spring (6) and a thermostatic bimetal plate (3). The transfer element is moved up by the snap action of the ther... | 04/25/1989 |
| 4642597 | Overcurrent relay An overcurrent relay comprises a housing having an external portion, an overcurrent responsive mechanism, disposed within the housing, for opening or closing a pair of contacts in response to an overcurrent, an adjusting screw device for adjusting the ope... | 02/10/1987 |
| 4639709 | Thermostat with adjustable temperature range setpoint stops A thermostat has a lever that adjusts the set point of the thermostat. The lever is limited in its movement by a pair of stops. The stops are inserted in a geometrically designed slot and can be readily moved for convenient adjustment.... | 01/27/1987 |
| 4582251 | Space thermostat for the sight handicapped A space thermostat for the sight handicapped has a raised pointer on the center control point adjustment means which cooperates with raised numbers representing temperature on a cover ring surrounding the control point adjustment means whereby a sight han... | 04/15/1986 |
| 4551702 | Thermostatic switch and method of manufacture A condition responsive switching device has a cup-shaped case, a body secured in abutting assembled relationship to the case, the body and case defining a chamber, a switch mounted on the body in the chamber providing a fixed electrical contact and a cant... | 11/05/1985 |
| 4496928 | Temperature responsive switch A temperature responsive regulator switch for controlling the heat of an electric heating device, comprises movable and stationary electric contacts cooperating with one another for assuming open and closed positions and a bimetal operatively coupled to t... | 01/29/1985 |
| 4471338 | Thermal cycling switch A push-to-turn thermal cycling switch for regulating the wattage of a resistance type surface heating unit of a domestic cooking range of the electric type is disclosed. The duty cycle of the heating unit, and thus its heat output is regulated by the swit... | 09/11/1984 |
| 4420736 | Heating and cooling thermostat with limiting action selected by a single lever changeover switching apparatus A thermostat for controlling heating and cooling apparatuses has a temperature control point adjustment knob connected to a temperature responsive switch means for adjusting the control point thereof. A single lever changeover switch is connected to the t... | 12/13/1983 |
| 4403646 | Energy saving thermostat A thermostat device for motels/hotels requiring the guest use a key to select a desired room temperature which in turn requires that the thermostat must be set back to a preset temperature when guest desires to lock the door to his motel/hotel room upon l... | 09/13/1983 |
| 4385659 | Heating and cooling thermostat set points limits set by changeover lever A time controlled thermostat provides the setting up or setting down of space temperature during certain selected time periods depending on whether it is controlling heating or cooling apparatus as selected by a changeover lever. The normal control temper... | 05/31/1983 |
| 4365228 | Thermostat construction having a one piece plunger with a wing-like section and method of making the same A thermostat construction having a one-piece plunger provided with a wing-like section that is engageable with a switchblade on opposite sides of an opening thereof and through which a post means of the wing-like section extends so as to bear against a te... | 12/21/1982 |
| 4355544 | Control knob with rotation limiter A predetermined limit in the rotation of a manually rotatable control shaft is established by a special knob having a speed nut which secures the knob to the shaft, and an interrupted circular slot in the knob, concentric with the shaft, for cooperating w... | 10/26/1982 |
| 4354170 | Thermostat with positive off element 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 posit... | 10/12/1982 |
| 4349807 | Heating and cooling thermostat with adjustable limits and methods of manufacturing and operating the thermostat A thermostat adapted to regulate the temperature of a given space. The thermostat has a mode selecting member which is movable between a heating mode position and a cooling mode position. A temperature setting member is selectively movable for setting a s... | 09/14/1982 |
| 4301438 | Adjustable force producing means for manually movable control levers in a space thermostat In a space thermostat having a control lever for setting the temperature set-point, a force producing means clamps the control lever to the thermostat casing through an elongated slot in the casing. A hollow, rigid thin-walled nut, a compressible anchor r... | 11/17/1981 |
| 4249155 | Heating and cooling thermostat with limiting action selected by the changeover switching apparatus A thermostat adapted for controlling heating and cooling apparatuses has a temperature control point adjustment means connected to a temperature responsive switch means for adjusting the control point thereof. A changeover switch means is connected to the... | 02/03/1981 |
| 4249154 | Temperature responsive electrical switching device and method of calibrating A temperature responsive electrical switching device provides an electrical connection between first and second electrical connectors when the temperature of the device is less than a predetermined threshold temperature and terminates the electrical conne... | 02/03/1981 |
| 4231010 | Thermostatic switch employing a stud member for calibration of the switch A thermostatic switch has a thermostatic subassembly located on a header so that movable contacts engage and disengage complementary contacts mounted on the header in response to temperature change. A knurled stud part has an interference fit in a header ... | 10/28/1980 |
| 4211907 | Setting mechanism with detent steps for tripping devices of electrical switch gear A setting mechanism for tripping devices of electrical switchgear has a driven inner member carrying a radially extending, resilient detent arm which interacts with stationary detent slots. For joining with an outer driving member, an interrupted ring sna... | 07/08/1980 |
| 4177860 | Heating and cooling thermostat with changeover switching operated upon control point adjustment A thermostat adapted for controlling heating and cooling apparatuses has a temperature control point adjustment means connected to a changeover switch means whereby upon the adjustment of the temperature control point adjustment means in a first range to ... | 12/11/1979 |
