Abstract: A support rail comprises a rail body having a front surface and a rear surface, wherein at least a portion of the rear surface is adapted to engage a fixed wall support member for attachment thereto. The support rail also includes a longitudinal channel portion that is at least partially defined by the front surface, wherein the channel is adapted to receive a longitudinal edge of a wall panel. Also disclosed are wall mounting systems and methods of installing a wall support rail system.

Abstract: An insulating glazing unit includes a pair of glazing sheets spaced apart with a spacer assembly. The spacer assembly includes an inner spacer member and an outer spacer member that are fabricated in a linear fashion and then folded into a frame. The outer spacer member may be initially formed in a flat configuration, cut to width, and then wrapped around the inner spacer member to form the spacer assembly. The outer spacer member carries the desiccant of the spacer assembly. The outer spacer member may also be gunned directly to the inner spacer member.

Abstract: A method and apparatus for providing a slider-equipped zipper on a pouch in a form/fill/seal operation. In the preferred embodiment of the invention, a foldable slider is employed, and is shifted from an open configuration to a closed configuration for installation on zipper strips on the pouch. Stops are preferably provided at the ends of the zipper strips by application of heat and pressure to form a boss on one side and a corresponding recess on the other, without requiring additional material. A hermetic peelable seal preferably is provided beneath the zipper strips. The slider preferably is applied to the zipper strips immediately before or immediately after filling, or immediately after formation of the peelable seal. Means may be provided to shift the position of the slider to close the zipper.

Abstract: Apparatus and methods for forming, filling, and sealing a flexible recloseable container. Both vertical and horizontal methods for placing product within the container are disclosed. The invention includes guiding a web of film which has interlocking fastener strips sealed to the web. A slider for locking and unlocking the fastener strips is placed in the correct orientation, spread apart at a pair of inner feet, and inserted over the fastener strips. The slider is positioned to close a substantial portion of the strips, and then an end stop, docking station, and corner seal are formed against a sealing plate. The slider is then repositioned, and a tamper evident seal may be placed over the fastener strip.

Abstract: A method of steam sterilisation of medical products is described, in which the medical products are placed separately or in multiples in a cardboard package, the cardboard package is sealed, and the medical products are subsequently steam sterilised in the sealed cardboard package.

Abstract: A method for roll packing foam mattress cores includes the step of providing a radially collapsible mandrel for winding up the foam material. Compression of the foam material is accomplished during the roll operation via a compression roller associated with the mandrel. After a sufficient amount of foam material has been rolled, the mandrel is collapsed to facilitate easy removal of the roll. In one embodiment of the invention, packing material is applied to a surface of the foam as it is rolled to prevent adhesion of successive layers in the roll.

Abstract: An apparatus and method for roll packing a variety of compressible materials including a radially collapsible mandrel for easy removal of the roll packed material without tearing or telescoping of the material. The apparatus farther includes an adjustable compression roller for setting the amount of compression in the rolled material and a roll handling device that facilitates removal of finished rolls from the apparatus. In one embodiment of the invention, a packing material dispenser supplies packing material to the in-fed compressible material as it is wound upon the mandrel.

Abstract: A form-fill-seal packaging machine produces a dummy bag from a film by starting to move seal jaws after the film has been pulled over a specified length or for a specified length of time from the moment when an eye mark on the film is detected by a detector. If the position on the film at which it was cut is displaced from the intended position, this displacement is inputted such that the specified length or the specified length of time is automatically corrected. If any of the parameters defining the pattern of transverse sealing operation is changed, the specified length or the specified length of time can also be automatically adjusted.

Abstract: An improved pouch-filling machine includes a pouch-opening apparatus for opening with closure strips such as zipper type locks in a continuous operation. The pouches are supported by continuously moving carriers, and the pouch-opening apparatus includes first and second stages wherein the first stage performs a preliminary opening of the upper edges of the pouch to permit gripping of the upper edges in the second stage. After this preliminary opening, the carrier carries the pouch to the second stage wherein a gripper arrangement grips and pulls the upper pouch edges outwardly to open the zipper lock. Further, the machine includes a transfer conveyor which continuously feeds the pouches to the pouch-opening apparatus in a vertical orientation.

Abstract: An apparatus and method for opening sealed containers includes, in a container with a removable seal, container packaging, with a removal end and a closed end, conformed to receive and removably retain the container. The seal has a front end and a rear end. A connector connects the seal and the container packaging. In another aspect of the invention, a connector extension is attached to the connector and to the seal.

Abstract: The present invention provides a medicine packing apparatus including a display unit with which a medicine housed state can be grasped at one glance, operatability is made favorable and prescription data can also be inputted. A plurality of medicine containers 11 each containing a medicine and equipped with a medicine identification unit 16 are housed in a medicine housing rack 1. A medicine included in prescription data is fed from the medicine container 11 by medicine feeding means. The medicine fed from medicine feeding means 34 is packaged by medicine packing means 34. Medicine data is read from the medicine identification unit 16 of the medicine container 11 by reading means 27, and housing site data of the medicine container 11 and medicine data of a medicine contained in the medicine container 11 are stored. An arrangement screen including an arrangement view of the medicine containers 11 corresponding to medicine names is displayed in display means 4, based on data stored in memory means 63, 65.

Abstract: A bit having selectably adjustable rotation about the axis of the shank post and the mouth piece as well as vertical adjustable shank location for use with a variety of animals and mouth pieces.

Abstract: An air/oil separation tank for installation in a circuit for the production of compressed air, the circuit including an intake regulator (1) which intercepts external air and sends the air to an oil bath spin compressor (2) which is activated by an electric motor (3). The pressurized air/oil mixture produced by the compressor, passes through conduit (4) to enter separation tank (5) in which the separation of the oil from the air occurs. The air under pressure passes through radiator (6) and fills accumulation tank (7) waiting to be used, while the oil (8) deposited at the bottom of the separator, is picked up by conduit (9) and passes through radiator (10) to be brought again to compressor (2). This separation tank is characterized by the fact that the entry port of the air/oil mixture is placed on the upper wall or cover of the vessel.

Abstract: An air purifier has a housing, a motor, a fan, a filtering net, and a power plug. The motor and the fan are positioned in the housing. The filtering net is joined to the front of the housing. The power plug includes a rotatable member and a pair of conductive members; the conductive members have ring-shaped portions concentrically arranged in a chamber of the housing, and are electrically connected to the motor; the rotatable member is rotatably received in the chamber, and has a pair of copper strips, which stick out at outer ends for connection with a power socket, and which constantly touch a respective one of the concentric ring-shaped portions from inner ends in the rotation of the rotatable member for adjustment of the position of the air purifier.

Abstract: A filter rack is spring loaded to an expanded position to help hold the filter rack at various positions and orientations within a furnace enclosure. The rack may also include a spring-loaded channel whose position adjusts to receive filters of various widths. One set of springs urge two side members of the filter rack outward, while another set of springs urge the channel inward.

Abstract: A safety apparatus for a tool driven by a motor at high speeds is provided, more particularly, an apparatus including a housing moveable over the ground surface for mounting the tool, and a ground engaging member disposed to follow the ground surface as the housing moves over same, the ground engaging member being moveable relative to the housing. The apparatus further includes a sensor for measuring the relative distance between the housing and ground engaging member, and means for selectively stopping the motor upon the distance between the ground engaging member and the housing exceeding a predetermined distance.

Abstract: A lawn mower blade having a thickness of approximately 0.075 inches comprises a main body, an elevational profile, and end portions equidistant from the center of the blade. The elevational profile consists of a raised portion that reaches a height at the plateau portion at the center of the blade. The elevational profile increases at an angle &agr; as the end portions approach the plateau. Each of the first and second end portions has a cutting edge portion. The height to blade thickness ratio is at least two-to-one. Further, since the mower blade is generally not heat treated, ribbing is added to the mower blade to provide strength.

Abstract: Crop harvesting headers include a sickle knife having a cutter bar defining a flange projecting forwardly from the header frame structure and extending across the header frame structure with a plurality of knife guards mounted on the cutter bar at spaced positions thereon so as to project forwardly therefrom. Each knife guard has at least one guard carrier lug for attachment to the flange by a bolt passing through a hole in the lug and a corresponding hole in the flange with a head on one end of the bolt and a nut on the other end of the bolt for clamping the lug to the flange. On crop harvesting headers of this type, it is often desirable to have the ability to change the knife guard angle to suit the crop and ground condition and this is obtained by providing a first elongate bar type shim located between the lug and the flange and a second shim located on the bolt.

Abstract: A crop harvesting header for mounting on a propulsion vehicle such as a swather tractor or combine harvester includes a main frame structure supporting a crop receiving table with a cutter bar across a front of the table and side drapers on the table for moving the cut crop toward a discharge location of the header. The frame is divided into a central frame portion and two separate wing frame portions each arranged for pivotal movement relative to the central portion about a pivot axis extending in a plane parallel to the forward direction and intersecting the cutter bar so that, as the wing frame portions pivot, the cutter bar flexes in the area adjacent the respective pivot axis over a small angle of the order of 4 degrees to maintain the cutter bar following the ground.

Abstract: An apparatus for mounting a blade to a cutting implement is provided. The apparatus includes an adapter which enables the blade to be fastened with the implement with structure that is offset from its axis of rotation. With this mounting capability, structure used to secure the blade relative to the cutting implement experiences decreases occurrences of tightening relative to the blade with which it is associated. Accordingly, there is presented an enhanced ability to remove the blade when such removal is desired.

Abstract: A spiral wrap is applied to a bundle of conduit ducts supplied by reels to a tandem arrangement of a pattern unit, a supply roller unit, an applicator unit and a delivery roller unit all supported by a wheeled base. The pattern unit has vertically spaced apart slats forming horizontal rows of generally rectangular slots subdivided by vertical walls to form rows of discrete apertures for delivering conduit ducts at spatial positions. The supply roller unit and delivery roller unit each have spaced apart upper, lower, left and right rollers supported by carriers in a frame by threaded shafts and hand wheels to define a predetermined geometric passageway. The supply roller unit organizes the conduit ducts received from the pattern unit and the delivery roller unit supports a wrapped conduit ducts from the applicator unit. The applicator unit has a frame to support a rotator driven by a motor for rotation about a central axis extending perpendicular to the plane of rotation by the rotator.

Abstract: A yarn is provided which includes a core formed of a cut-resistant materials and a wrapping yarn wound about the core. The core may include glass, metal and carbonaceous fibers which may be roughened and/or stretch-broken. The yarn may exhibit enhanced performance properties, such as strength, cut resistance and heat resistance. A method of making the yarn includes combining a glass filament and metal filament in a core wrapped by a sheath.

Abstract: Rope chain link elements and a manufacturing process to make such link elements, each link element exhibiting a unique visual property, such as coloration, surface texture, reflectivity, design feature or characteristic, shape, or other visually attractive appearance. Methods of construction include surface pre-texturing, stamping, simultaneous surface texturing and stamping, and wire bending. Such unique visual property traits for the succession of link elements results in a more attractive, fanciful, more delicate and interesting fashion item. Each of the interconnected link elements may have the same or different visual properties, and may have multiple portions of varying color, texture, or other visual properties. In other aspects of the invention, each link element may have differently shaped portions, such as adjoining and connecting geometric or heart shaped segments. Additionally, the interior and/or exterior edges of the link element may exhibit different shapes, colors, patterns, or textures.

Abstract: A decorative rope chain and a manufacturing process to produce a rope chain in which each link element used as a basic building element exhibits a unique visual property, such as surface texture, coloration, attribute, feature, characteristic, shape or other physical appearance. Such unique visual property traits for the succession of link elements results in a more attractive, fanciful, more delicate and interesting fashion item. Each of the interconnected link elements may have a first major surface exhibiting a first visual property and an opposite second major surface exhibiting a second, perceptively different, visual property. In other aspects of the invention, the major surfaces of the link elements may have differently colored or textured surface portions. In yet another aspect of the invention, each link element may have differently shaped portions. Similarly, the interior and/or exterior edges of the link element may exhibit different shapes, colors, patterns, or textures.

Abstract: The instant invention relates to a two-cycle hot-gas engine comprising an expansion piston in a heatable cylinder member and a compression piston in a coolable cylinder member. The expansion piston and the compression piston are disposed along a common axis.

Abstract: Process of producing power comprising:

Abstract: A fuel control system for an aircraft gas turbine engine that includes a thrust augmentation system. An augmentor fuel pump is arranged to provide pressurized fuel to an exhaust nozzle throat area actuation system to eliminate the need for a separate hydraulic pump to provide pressurized fluid for exhaust nozzle actuation. An augmentor fuel bypass arrangement is provided to enable the augmentor fuel pump to provide pressurized fuel to the main fuel pressurizing valve and to components operated by the main fuel system in the event of failure of the main fuel pump. The augmentor fuel pump pressure and output flow are controlled as a function of thrust augmentation demand and main fuel system operation. The system provides redundancy by enabling either the main fuel system or the augmentor fuel system to maintain engine operation if one of the fuel systems fails or provides inadequate fuel flow.

Abstract: Device in a burner for gas turbines, comprising a cylindrical housing (10) and a fuel inlet tube (16) arranged centrally within said housing, said housing (10) and fuel inlet tube (16) mutually defining an annular chamber (28). The annular chamber (28) extending into an extended diameter combustion chamber (18), having means (25) for supplying combustion air to said annular chamber (28). Radial flow swirlers (14) are provided for creating a rotational movement of the combustion air in said annular chamber. The housing (10) has a downstream restriction (20) in front of the free end of the centrally located fuel inlet tube (16), at the entrance of the combustion chamber (18), for creating a rich combustion spinning tubular swirl dominated flow of a mixture of air and fuel, with a recirculation central core, said tubular spinning flow extending into the combustion chamber (18).

Abstract: An improved rocket engine combustion chamber including a first chamber having a first diameter and located intermediate to a propellant injector and a second chamber having a second diameter that is larger than the first diameter. The combustion chamber extends radially outward from the first diameter to the second diameter suddenly at the intersection between the first and second chambers. Film cooling is provided by providing a stratified layer of low temperature fluid adjacent to the inner wall of the first chamber and surrounding a primary inner core of high temperature gases. The sudden stepped expansion at the interface between the first and second chambers provides secondary recirculation mixing of the propellants and facilitates complete combustion. In an additional aspect, the inner surface of the first chamber may be made of a material that has a high degree of thermal conductivity to minimize temperature gradients.

Abstract: A catalyst bed assembly, comprising: an outer housing having an open interior, an inlet leading to the open interior, and an outlet from the open interior; a catalyst bed in the open interior; and a gap between the outer housing and the catalyst bed. The open interior receives material from the inlet. A portion of the material enters the catalyst bed to expose said material to a catalyst so that the material and the catalyst react and create heat within the catalyst bed assembly. A remainder of the material enters the gap between the outer housing and the catalyst bed to cool the catalyst bed assembly. The catalyst bed assembly could be part of a turbopump assembly. The turbopump assembly would further include a nozzle downstream of the outlet; a turbine downstream of the nozzle; and a pump driven by said turbine.

Abstract: Method and arrangement for treatment of a gas-flow in connection with a NOx reducing catalyst (18) that include guiding the gas-flow through an exhaust gas treatment unit (18) having several ducts (21) with exchange of heat between the ducts (21). The ducts (21) are connected to an inlet and an outlet, respectively, at the exhaust gas treatment unit (18) so that the gas-flow occurs during exchange of heat between incoming and outgoing flows. Reduction of NOx compounds in the gas-flow is accomplished by means of the NOx reducing catalyst (18). An adaptation of the temperature of the exhaust gas treatment unit (18) is affected to the prevailing operating condition of the NOx reducing catalyst (18). The method and apparatus enable provision of the required exhaust gas temperature for NOx reduction, while also accommodating the temperature limitations imposed by sulphur absorption and regeneration subsystems.

Abstract: A method for influencing the exhaust gas temperature of an internal combustion is described in which measures can be carried out for increasing, lowering and limiting exhaust gas temperature. Depending on temperature requirements, and in which method these temperature requirements are prioritized, the temperature limitation having the highest priority for ensuring protection of the component parts, the resulting temperature requirement may be achieved by heating measures or cooling measures in such a way that heating measures and cooling measures are not applied at the same time.

Abstract: A control apparatus for a direct-injection, spark-ignition engine including a temperature-condition detector for detecting a temperature condition of the engine catalyst, and a controller for controlling a fuel-injection operation of the engine fuel injector for the engine.

Abstract: At the start of operation of an internal-combustion engine(S10,S12,S14), an exhaust flow is restrained (to raise the exhaust pressure) (S18), secondary air is supplied (S20), and the combustion air-fuel ratio (A/F) is set within the range of rich air-fuel ratios (S16, S22).

Abstract: In a cold condition before a warming-up completion in a diesel engine, when an engine power is less than a predetermined value, an air excess rate is controlled to a second air excess rate being smaller than a target air excess rate set after the warming-up completion, thereby promoting a warming-up of an exhaust gas purification catalyst due to rise of an exhaust gas temperature, and when the engine power is more than the predetermined value, the air excess rate is controlled to a first air excess rate being larger than the target air excess rate, thereby decreasing HC emission quantity from a combustion chamber. Accordingly, a total emission quantity of HC at the clod condition is decreased.

Abstract: Systems and methods for controlling diesel engine emissions, including, for example, oxides of nitrogen emissions, particulate matter emissions, and the like. The emission control system according to this invention is provided in the exhaust passageway of a diesel engine and includes a catalyst-based particulate filter; and first and second lean NOx trap systems coupled to the catalyst-based particulate filter. The first and second lean NOx trap systems are arranged in a parallel flow configuration with each other. Each of the first and second lean NOx trap systems include a carbon monoxide generating catalyst device, a sulfur trap device, a lean NOx device, a supplemental fuel injector device, and a plurality of flow diverter devices.

Abstract: Automatic transmission, comprising at least one primary hydraulic pump (1) arranged to be powered by a motor, said primary pump (1) being arranged to power a number of at least two secondary hydraulic pumps (21-2n) which are mechanically connected to an outgoing propeller shaft (6), the secondary hydraulic pumps being arranged for active powering of said outgoing propeller shaft when the hydraulic pressure caused by the primary pump in a closed room (A) between the primary pump and the secondary pumps, reaches predetermined levels which are different for the various secondary pumps (21, 22 and . . . 2n respectively).

Abstract: An epicycling device with improved sealing. A housing is provided with adjacent walls spaced apart to allow a substantially planar partition to pass. A piston is linked eccentrically to a drive shaft and positioned within the housing, has a cross sectional shape for mating with the housing walls and includes a circular recessed surface at its corners. Seal housings with a hollow cylindrical cross sectional shape are provided at each corner of the piston housing. An inner seal element is positioned within each of the recessed surfaces with the inner seal element including an elongate cylindrical body with a slot therethrough. An outer seal element is positioned within the seal housings with the outer seal element including an elongate cylindrical body with a slot. A partition is positioned between each pair of the inner and outer seal elements and slidably engaged with the slots in the seal elements.

Abstract: A hydraulic rescue system comprises a fluid reservoir, a pump assembly having a plurality of pump modules, and a manifold assembly having a corresponding number of manifold modules. Each pump module includes an input port for drawing hydraulic fluid from the fluid reservoir and an output port for supplying hydraulic fluid under pressure to a hydraulic rescue tool. Each manifold module includes a fluid circuit that is adapted to fluidly connect the output port of one of the pump modules with a hydraulic rescue tool. A PTO adapter is connected to the pump assembly and is operably connectable to a PTO shaft of a vehicle transmission for operating the pump modules. In this manner, a number of different hydraulic rescue tools can be operated simultaneously with full pressure from the pump assembly.

Abstract: A drive mechanism for use in the transmission of power from a plurality of linear reciprocating power generating elements to a rotating output element. The drive mechanism includes a drive cam member having a cam follower guiding contour extending along the cam member; a drive cam follower operatively connected to each power generating element. Each follower is adapted to engage the cam follower guiding contour throughout each reciprocation cycle of the power generating elements, the drive cam follower guiding contour following a generally sinusoidal profile on the surface of the drive cam member, the profile including a series of lobes forming peaks and troughs with intermediate regions therebetween, the peak to peak amplitude of the substantially sinusoidal profile of the cam follower guiding contour on the surface of the drive cam substantially corresponding to the stroke amplitude of the stroke of the reciprocating power generating elements.

Abstract: This invention relates to an actuator assembly for a turbocharger pressure control valve assembly and a method of assembling a pressure control assembly of a turbocharger. The assembly comprises an actuator coupled to an actuator rod which in use is coupled to the valve assembly to control the position thereof. The actuator rod comprises an elongate member at least a portion of which is flexible. The actuator rod may be a resilient member which may be substantially straight when unstressed. In use the actuator rod may extend in a substantially straight line between the actuator and the valve assembly.

Abstract: The present invention is intended to sufficiently fulfill the supercharging function at the time of either of low speed running of the engine and high speed running and realizing output improvement or fuel expense reduction. The present invention has the engine 101 having the jet mechanism for directly jetting fuel into the cylinder 101a, the first turbo supercharger 104 for supercharging the engine 101 at the time of low speed rotation, the second turbo supercharger 105 for supercharging at the time of high speed rotation, the first and second exhaust control valves 106 and 107 for selecting exhaust paths relating to the first and second turbo superchargers 104 and 105 and controlling the exhaust gas flow rate, and the controller 114 for controlling the switching operation of the exhaust control valves 106 and 107 so as to realize lamination combustion or homogeneous combustion using the first and second turbo superchargers 104 and 105 according to the operation conditions of the engine 101.

Abstract: An energy conversion device for converting heat to mechanical energy. The apparatus includes a heat exchanger vessel absorbing heat from an ambient or energy-rich fluid and transferring heat to a working fluid within an interior chamber of the vessel containing pressurized working gas. An isolation vessel is positioned within the interior chamber, with a gas flow loop defined between the two vessels through which the working gas flows. The isolation vessel is insulated to create a temperature differential and is pressure resistant to allow low pressures in the interior chamber to be maintained. A compressor is positioned within the isolation vessel to compress and discharge the gas into the gas flow loop. An expander is placed in the isolation vessel for converting energy of the expanding gas into a mechanical energy and for rarefying the expanded gas prior to discharge to create a lower bottom temperature or cold reservoir.

Abstract: Combustion turbine power plants and methods of operating the same are provided in which air is cooled using solar energy and supplied to an air inlet of the power plant to support combustion. Also, combustion turbine power plants and methods of operating the same are provided in which steam is produced using solar energy and injected into a turbine of the power plant.

Abstract: This invention relates to air breathing engines, such as ramjets, scramjets and internal combustion, and more particularly to an active combustion control device for a combustor. In more particularity, the present invention relates to a method and apparatus that applies active combustion control technology to advanced propulsion devices and closed-loop fuel injection at sub-harmonic frequencies of the instability frequency of the combustor. The problem of limited actuator frequency response is addressed by injecting fuel pulses at sub-harmonic frequencies of the instability. The fuel may be liquid, solid or gas. To achieve this desired result, a closed loop controller is designed to determine sub-harmonic frequencies using a divider to divide the instability frequency of a combustor, yielding a fraction of the harmonic frequency.

Abstract: Disclosed is an invention related to a warmer and cooler for a container that is programmably timed to engage a heating and/or cooling unit. The invention may be adapted for use with a baby bottle to facilitate nighttime feedings by programming when the unit should be turned on to heat the bottle or cool the bottle.

Abstract: A tunnel freezer having a metal belt for carrying product therethrough, wherein the weight of said belt is from 1 kg per square meter of surface area to 6 kg per square meter of surface area.

Abstract: There is provided a car air conditioner with a high COP, low GWP and high reliability. A simple refrigerant R32 is filled in a refrigerant circuit 1 of the car air conditioner. This simple refrigerant R32 has a high COP and low GWP, but is easily polarized and produces contaminants and sludge. However, these contaminants and sludge hardly block a motor-driven expansion valve 6 or the like due to vibration and impact of a car. Therefore, this car air conditioner has high reliability. Furthermore, since the simple refrigerant R32 is a simple substance, recycling after collection is easy.

Abstract: A device for indicating the formation of ice in refrigeration appliances, such as the refrigerators of domestic use, comprising a display (50), which is mounted inside the refrigeration cabinet (10) and formed by a demarcated region (51), defined by a heat sensitive element, whose color is enhanced and distinguished when submitted to a determined temperature condition that is reached when said demarcated region (51) is contacted by the layer of ice (G) accumulated on the evaporator (30).

Abstract: A system and a method of automatic defrost for a refrigeration appliance, including a hermetic compressor driven by an electric motor (1); a control unit (2); a thermal switch means (10) having a first and a second turn on condition and a turn off condition and another turn off condition of the electric motor (1); a timer (20), which measures the periods of time in the turn on and turn off conditions of the electric motor (1); a switch means (40), which selectively interrupts the energization of the electric motor (1), by instruction of the control unit (2); and a cycle counting means (30), which counts each first and second turn on conditions of the electric motor (1), the control unit (2) selectively activating the thermal switch means (10) to operate in determined turn on and turn off conditions of the electric motor (1).