Abstract: The present invention provides an interior assembly for an electrical distribution device having a fuse for each phase in a circuit. The interior assembly includes a plurality of modules having an operating mechanism for opening and closing a switch contact. The switch contact is connected to each fuse and phase of the circuit. Each module has a housing and means for demountably securing one of the modules to at least one adjacent module. The securing means is manually operated and integrally formed with the housing of each module. The present invention also provides a method of assembling the interior assembly of an electrical distribution device having a fuse for each phase in a circuit. The step of the method includes manually and demountably affixing a plurality of modules to one another without discrete fasteners. The plurality of modules have an operating mechanism for opening and closing a switch contact. The switch contact is connected to each fuse and phase of the circuit.

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: A switch device (100) has a configuration that supports installation. The switch device (100) has two segments (110, 120) that have selectively coupled contact portions (130, 113). The two segments (110, 120) are joined together by a detachable grasp member (140) to form a continuous structure. The detachable grasp member (140) is detached from the two segments (110, 120), when the switch device (100) is installed, to separate the two segments (110, 120) except for the selectively coupled contact portions (130, 113).

Abstract: A micromechanical electrostatic relay has a base substrate with a base electrode and a base contact piece. The relay also has an armature substrate with an armature spring tongue that curves away from the base substrate, and an armature electrode and an armature contact piece. When a control voltage is applied between the two electrodes, the spring tongue unrolls on the base substrate and thus closes the contact. The curvature of the spring tongue in the quiescent condition is produced by a coating with a compressive strain layer. In order to avoid undesired transverse arcs of the spring tongue, the compressive strain layer is subdivided into strips by slots in a longitudinal direction of the spring tongue. A tensile stress layer applied in surface-wide fashion over the strips and slots reinforces the compensation effect.

Abstract: A high frequency switch to be mounted on a board, which includes an insulating housing to be mounted on a board of a high frequency apparatus on which ground and signal conductors are disposed; a pair of parallel ground conductive plates disposed on opposite sides of the insulating housing in a direction perpendicular to the board such that when the insulating housing is mounted on the board, the ground plates are connected to the ground conductors on the board; an non-ground conductive plate disposed in the insulating housing between and at right angles with the parallel ground conductive plates such that when the insulating housing is mounted on the board, the non-ground conductive plate is connected to the signal conductor, the non-ground conductive plate including: a switching spring to be connected to one of the signal conductors on an input side, and a connection plate to be connected to one of the signal conductors on an output side; a free end of the switching spring being pressed against a free end o

Abstract: The present invention provides an interior assembly for an electrical distribution device having a fuse for each phase in a circuit. The interior assembly includes a plurality of modules having an operating mechanism for opening and closing a switch contact. The switch contact is connected to each fuse and phase of the circuit. Each module has a housing and a mechanism for demountably securing one of the modules to at least one adjacent module. The securing mechanism is manually operated and integrally formed with the housing of each module. The present invention also provides a method of assembling the interior assembly of an electrical distribution device having a fuse for each phase in a circuit. The step of the method includes manually and demountably affixing a plurality of modules to one another without discrete fasteners. The plurality of modules have an operating mechanism for opening and closing a switch contact. The switch contact is connected to each fuse and phase of the circuit.

Abstract: An electrical switch selectively controls an ignition circuit and accessory circuits of a motor vehicle. The electrical switch includes a rotatable member with radially extending side walls having cam surfaces formed thereon for operably actuating electrically conductive leaf spring members to individually open and close electrical circuits in response to positioning the rotatable member in predefined angular positions. The electrical switch can include both high current and low current leaf spring members in a single switch assembly capable of being assembled from one side.

Abstract: A push button switch (3) encounters, during a stroke of a push rod (6) thereof, a pressure point (D), a switching (contact-making) movement, and a return tension. A one-piece spring element (16) is provided for achieving this with an uncomplicated structure, with a short stroke, and with a reliable contact once the pressure point has been overcome. The one-piece spring element has, between a contact arm (26) and a return arm (21), hairpin-shaped bent guide legs (17, 18). A sloping step (24) formed on at least one of the guide legs creates the pressure point.

Abstract: This electrical switch (1) consists of a flat spring, profiled in order to provide both a contact function and a spring function; the flat spring (1) includes a first leg (2) which can be deformed by bearing on a fixed pivot pin (3) of a support (4), and a second leg (5), which can move at the same time as the first leg deforms and whose end (5a) can assume either of two positions for contacting pins (14,15) of an electrical circuit. The switch according to the invention is less bulky than the usual switches by virtue of its flat shape, less expensive to manufacture, because it only consists of a single component, and easy to install on its support.

Abstract: A bridging member extending across a cavity in a semiconductor substrate (e.g. single crystal silicon) has successive layers--a masking layer, an electrically conductive layer (e.g. polysilicon) and an insulating layer (e.g. SiO.sub.2). A first electrical contact (e.g. gold coated with ruthenium) extends on the insulating layer in a direction perpendicular to the extension of the bridging member across the cavity. A pair of bumps (e.g. gold) are on the insulating layer each between the contact and one of the cavity ends. Initially the bridging member and then the contact and the bumps are formed on the substrate and then the cavity is etched in the substrate through holes in the bridging member. A pair of second electrical contacts (e.g. gold coated with ruthenium) are on the surface of an insulating substrate (e.g. pyrex glass) adjacent the semiconductor substrate. The two substrates are bonded after the contacts are cleaned.

Abstract: The present invention provides an electrical switch that is adapted to compensate for dimensional variations in the alignment between a resilient switch member and a movable actuation member. To this end, the electrical switch has general utility but is primarily intended for use in automotive applications. More specifically, the improved electrical switch is incorporated into a latching mechanism for controlling an electrical circuit that is provided for indicating whether the latching mechanism is in a latched or an unlatched condition. The electrical switch has a pair of overlapping and offset terminal blades and further includes a biasing arrangement for biasing each terminal blade into a predetermined alignment relative to the other. The biasing arrangement is further operable for biasing both blades relative to the movable actuation member of the latch mechanism.

Abstract: A housing to accommodate an alarm conducting clip is made of electrically insulating material having a small aperture at one end for an electric cord passing therethrough, a large aperture at opposite end having a passage formed in-between the apertures adapted to receive a pair of copper plates at inner top and bottom portions, respectively, and a pair of slanting slots at respective walls adapted to receive an actuated rod which is adapted to press a clip to close or to open at its free ends. The clip is formed in a V-shaped profile having the closed end inserted into the housing through the large aperture with the opposite free ends protruding therefrom. The constantly open free ends engage the two copper plates, respectively, that forms a closed circuit of the alarm. The free ends will be forced to close by the activating rod and thus disengage from the two copper plates and forming an open circuit of the alarm, thereafter.

Abstract: An end (2) of an electrical connecting line (1) for feeding a switching current is connected in an electrically conductive fashion, engaging through a recess (4) of a contact support (3), to a contacting piece (7) arranged on the contact support (3).In order to simplify the manufacture of such a contacting device, it is provided that the one end (2) is connected to an extension (10) which is formed by a stamping process in which the recess (4) of the contact support (3) is used as a shaping tool for the extension (10). It is thus ensured that the dimensions of the extension (10) are matched in an optimum fashion to the dimensions of the recess (4). In addition, due to the production of the extension (10) in the recess (4) itself, the positioning of the end (2) bearing the extension (10) relative to the contact support (3) or to its recess (4) is dispensed with.The contacting device can be manufactured, in particular for switchgear and relays.

Abstract: A low pressure monitor for hybrid air bag systems for vehicles includes a pressure responsive disc 34.6 exposed on one side to a reference pressure chamber 34.11 and on the other side to the pressure in an air bag bottle 40 and positioned adjacent a movable arm 28.10 of an electric switch, The switch includes an electrically conductive sheet having a first portion partially encased in a base 26 of electrically insulative material and being connected to a first terminal 14 and a second portion forming the movable contact arm 28.10 extending from the insulative material and culminating with a portion formed with contact rib 28.14 adapted to be received beneath a laterally extending stationary contact portion 22 of a second terminal 16. Tabs 28.4, 28.6 extend from the sheet out of the insulative material for connection to a resistor 30 mounted on the electrically insulative base and a frangible portion 28.

Abstract: A pressure actuated electrical contact switch composed of two planar electrodes having substantially thinner contact members extending therefrom and disposed at an obtuse angle. The electrodes are bound together by electrically insulating epoxy and the contact members are arranged in proximate spaced apart relationship such that pressure on one causes mechanical and electrical contact with the other.

Abstract: A snap action switch has a base and cover enclosing upper and lower electrical terminals. A spring blade disposed between the terminals is movable by a cover-mounted actuator between engagement with one terminal or the other. The spring blade has only one stable position to which it returns upon release of the actuator force. The spring blade includes an anchor mounting the blade in the base and defining a generally planar junction portion. A pair of wings extend out of the plane of the junction portion. An elongated center beam connects at a fixed end to the junction. Outer beams on either side of the center beam connect to the wings. The free ends of all three beams are joined at a contact portion. Crimps in the outer beams place them in tension and the center beam in compression.

Abstract: A spring contact device consists of an insulative case (6) having at least one pair of slots extending upwardly from a bottom thereof and a contact spring (1) which includes a contact portion (3) made by bending upwardly a thick portion of a profile spring sheet such that the contact portion projects through a top of the case; a terminal portion (4) made from a thinner portion of the profile spring sheet so as to project downwardly from a bottom of the case; a U-shaped leaf spring portion between the contact and terminal portions; and at least one pair of lugs (5) extending upwardly from a lower section (2) of the U-shaped leaf spring portion and press fitted into the slots for securing the spring contact to the case.

Abstract: A switch comprises a housing having an upper member and a lower member, an actuator disposed in the housing and rockably supported on the upper member, switch means for connecting and disconnecting a movable contact with a stationary contact when the actuator rocks on the upper portion, and a connecting terminal for an external electric wire electrically connected to the switch means. The switch means includes a movable contact element having the movable contact and a support element which rockably supports the movable contact element. At least one of portions contacting each other between the support element and the movable contact element is provided with a clad layer of a high conductive noble metal which extends in the rocking direction at the width less than that of the contacting portions.

Abstract: Two leaf springs of substantially identical width which define first and second movable members are superposed on each other at one end and connected together. A movable contact is attached to the thus connected portion. The first movable member has a slot formed in a middle portion thereof. The width of an end portion of the second movable member is set so that the end portion can be inserted in the slot. A supporting member being inserted in the slot has a portion for swingably supporting an edge portion of the slot and another portion for swingably supporting an end portion of the second movable member opposite to the movable contact. The second movable member is curved so that upon application of a operating force to the first movable member the urging direction of the second movable member changes to cause a snap action to thereby selectively bring the movable contact into contact with one of the two fixed contacts.

Abstract: A three pole relay is shown which operates in response to the flow of normal operating current across fluorescent lamps to energize a coil which actuates a relay to open switches disposed in all of the filament lines associated with the lamp to shut off filament current while maintaining current flow across the lamps themselves.

Abstract: A push-button switch comprises a housing having a substantially cylindrical interior portion. It also includes a movable switching member, disposed substantially within the interior of the housing and having a reciprocally movable plunger with successive released, latched and depressed positions relative to the housing interior portion. Functional surfaces of substantially cylindrical form are disposed adjacent and in a substantially fixed position relative to the interior portion of the housing and include guiding surfaces aligned in the direction of movement of the plunger. The plunger has members, interengaging with the guiding surfaces, for preventing rotation of the plunger during reciprocal movement of the plunger. The movable switching member also includes a rotatable latch ring, preferably C-shaped, disposed on the plunger and having a radially extending lug. The plunger also has members for holding the rotatable ring in a fixed latitudinal position about a portion of the plunger.

Abstract: A leaf switch which includes a plurality of contact leaf springs (2a, 2b) embedded in an insulating base (1). The contact leaf springs (2a, 2b) are each held at a setting point (P.sub.1, P.sub.2) while being kept in a stressed state by being forcedly inflected by a bracket (4) of an inverted U-shape pivotally mounted on the insulating base (1). The bracket (4) bends the contact leaf springs (2a, 2b) when it is pivotally moved and is coupled to the insulating base when it is pivotally moved to its end point, thereby defining the setting point for each contact leaf spring.

Abstract: A microswitch in which a good snap action feeling is obtained and an operating stroke is large is provided. Included in the microswitch is a swingable lever which is pushed by a pressing projection of a push button swingably pivotally supported. One end of the lever is pivotally supported and the other end is coupled with one end of a movable member having a movable contact. The movable member is biased by a spring in one direction.

Abstract: A switch for controllng a porch light for providing an emergency signal, the switch being formed of a body of non-conducting material having a flasher and toggle pivotally supported to the switch body, the toggle being positionable in an OFF position whereby no continuity is provided through the switch, in an ON position wherein continuity is provided, and a FLASHER position wherein continuity is provided through the flasher, the switch being connectable in series between a voltage source and a light so that in the first position the light is ON, in the second position the light is OFF and in the third position the light is connected to the voltage source through the flasher.

Abstract: A timer includes a motor-driven cam, switches responsive to the cam, and terminals connected to the switches, all supported in a housing. The housing includes slots to receive the terminal blades and cavities communicating with the slots. The blades of the terminals include a notch with one side perpendicular to the axis of the blade to form a stop and the other side forming a first ramp at an acute angle to the perpendicular. The first ramp is bent out of the plane of the blade to form a second ramp. As a blade is inserted into a slot, the second ramp forces the first ramp into the plane of the blade as it passes through the slot. After passing through the slot, the first ramp snaps into the cavity along a scissoring intersection until the stop engages the housing, at which point the housing is gripped between the first ramp and the stop, thus securing the blade in the housing.

Abstract: Disclosed is a leaf switch having an integral cover, and including an insulating base (1), two leaf spring elements (3a, 3b) embedded in the base (1), and a cover (2) consisting of two cover halves (2a, 2b) integrally connected to each other through a hinge portion (2c). One of the cover halves (2b) is pivotable about the hinge portion (2c) to a position in which it engages the other cover half (2a), thereby forming the cover (2) which envelops the leaf spring elements (3a, 3b). The base (1) and cover (2) are formed from a plastic material by concurrent integral molding.

Abstract: A leaf spring switch device is composed of an L-shaped base member having a long portion and a short portion. A pair of leaf spring contactors extend through the short portion of the base member and have contacts at one end and terminals at opposite ends. An actuator is mounted on one contactor to move it with respect to the other. The contactors extend along the long portion. The lengths of the long and short portions of the base member are selected to be the same as long and short dimensions of a conventional microswitch with the width of the long portion being one half the length of the short portion. In this way, the leaf spring switch device of the present invention is interchangeable with a conventional microswitch.

Abstract: A switch in which a switch unit is constituted by situating the free end of a first movable member disposed with a contact between stationary contacts opposing to each other along the vertical direction, while engaging the other end of the movable member to a fixed portion, pivoting one end of a second movable member to the free end of the first movable member while engaging a spring to the other end of the s econd movable member, thereby biasing the contact of the first movable member to one of the stationary contacts, and setting the other end of the second movable member to a switch operation portion, as well as a switch wherein a housing, which enhouses a push button unit containing an illumination unit, a socket unit to be connected to the illumination unit and a plunger to be connected to the push button switch, contains to secure the switch mechanism at the lower opening thereof and the lower end of the plunger is disposed to the switch operation portion.

Abstract: An infinitely adjustable control switch for controlling electric heaters in a domestic cooking range is disclosed. The control suited provides a boxlike housing which encloses two power switches and a switch for an indicator light. All of the switch components are supported by terminals positioned in a row along one side wall of the housing. Therefore, a unitary multiconductor can be used to simultaneously connect and disconnect all of the terminals. The terminals are installed in grooves formed in the side wall of the housing by lateral straight-end movement through lateral openings and without any movement lengthwise of the terminals. The terminals are then staked and a locking bar is installed to complete the mounting of the terminals and the switch components. Some of the terminals are provided with extension to support switch components at remote locations. Further the housing is provided with projections which position such extensions.

Abstract: A switch for detecting an erroneous erase protection fin provided on a side wall of a video tape cassette including a stationary contact strip made of electrically conductive metal, a movable contact strip made of electrically conductive metal, and a main body formed by an integral molding of electrically insurating synthetic resin. The main body includes a base portion for supporting the stationary and movable contact strips such that they are aligned in a direction in which they are resiliently deformable, a first actuation portion which is engaged with the stationary and movable contact strips, a first flexible portion provided between the base portion and the first actuation portion, a second actuation portion which is engaged with the movable contact portion, and a second flexible portion which is provided between the base portion and the second actuation portion.

Abstract: A push-button switch having a lamp portion and a switch portion. The lamp portion includes a lamp, a lamp holder, a lamp casing, and a housing. The lamp holder is fixed within the housing and the lamp casing moves up or down to turn off or turn on the switch. The switch portion of the push-button switch includes a switch base, a plunger, and a cam. The plunger moves in conjunction with the lamp casing and has a cam formed on one end. The cam is guided along guides that are formed on the switch base, and holds the lamp casing and plunger in a raised position in which the switch is turned off and a lowered position in which the switch is turned off.

Abstract: A contact spring for a bistable relay for the switching of higher current will be described in which the actual contact spring is at least one stranded wire connected in parallel, which takes a part of the currents.

Abstract: A snap acting switch comprising an elongate cantilever mounted spring member having a contact portion, an electrically conductive element upon which the contact portion bears, and an actuator having surfaces intersecting at an angle, one of the surfaces bearing on the spring member. The switch is actuated by causing the spring member to approach and pass over the intersection of the surfaces, which causes the bearing pressure of the contact portion to increase before the snap action occurs.

Abstract: Disclosed is a printed circuit board assembly including an integral metal stamping having a plurality of conductive circuit paths received in complementarily-shaped recesses of a dielectric substrate. The integral metallic stamping includes an improved snap action switch having an improved actuator mechanism, an improved rotary switch of the type making on/off contact during rotation thereof, and an upstanding plug-like connector member receivable in a mating female connector. Each of the switches mentioned above as well as the plug-like connector can be formed separately in different printed circuit board assemblies.

Abstract: A switching device for producing a signal in response to small movements between two portions of a surface including a movable member within a housing, the movable member being biased towards a first position by resilient yet deformable means connected to the housing. A first surface attachment means is connected to the movable member and extends outside of the housing for attachment to the surface. A second surface attachment means is mounted directly to the housing and is attachable to the surface. A switch means responsive to sufficient movement of the movable member away from its first position is mounted within the housing adjacent to and in the path of the movable member. The switch means is electrically connected to circuitry which can utilize the switching action of the switch means which occurs when the surface is moved in such a way that the first and second surface attachment means move with respect to one another, thereby moving the movable member to operate the switch means.

Abstract: A timer having switches are responsive to a cam, the cam being driven through a timer motor through a clutch. The cam and the switches are disposed within a housing. The switches include electrical contact blades with cooperating electrical contacts. Electrical terminals are mounted in the housing and extend through the housing and are unitarily constructed with the switches to form a one piece combination. The electrical terminals are held within slots in a wall of the housing through a pair of projections lanced from the terminals which engage notches opening to the slots. The projections are individually in planes that are at an angle to each other such that their distal ends are directed away from each other and which are spring biased to act as cantilevered spring members and made to squeeze inwardly between sides of the notches.

Abstract: An interchangeable switching system for an electrical device includes a trigger, first and second electrical contacts, and first and second interchangeable housings for mountably receiving the trigger and the contacts. The trigger has first and second camming surfaces and the first housing includes structure for mounting the first and second electrical contacts such that inward movement of the trigger causes the first contact to be forced by the first camming surface into electrical contact with the second contact. The second housing includes structure for mounting the first and second contacts in positions in which a predetermined inward movement of the trigger causes the first contact to be forced by the first camming surface into contact with a third electrical contact disposed in this housing between the first and second contacts.

Abstract: A rotatable cam operated switch having a cam whose peripheral surface constitutes a cam surface. A guide groove is formed along the entire periphery of the cam surface. A first contact plate closer to the cam and a second contact plate farther from the cam are provided on the peripheral side of the cam. The first contact plate has a first part which extends towards the cam which has a flat surface which is formed such that the dimension thereof in the direction parallel to the axis of the cam is made small, while the dimension thereof perpendicular to the axis is larger, to increase rigidity and preclude bending of the plate towards the cam, thereby resulting in more stable electric contact. Additionally, a second part of the first contact plate projects away from the cam and has a flat surface which is rotated by 90.degree. with respect to the flat surface of the first part, and which serves as a terminal for a plug-in connector.

Abstract: There is disclosed a multiple electrical contact switch which has a comb block whose teeth are inserted into receptacles of a mounting block thereby wedging pairs of electrical spring contacts, which are also inserted into the receptacles, between the teeth and the receptacles without bending the spring contacts. The electrical contacts extend from the receptacles and are activated by an operating card, which engages the extended portions of the electrical contacts to open or close electrical conduction paths. When pressure on the spring contacts from the actuating card is released, the spring contacts then move the operating card to an original position wherein the sequence of open and closed contact springs is as if there were no contact with the operating card and the contact springs.

Abstract: A switch has four separate electrical terminals. A first electrical contact selectively electrically bridges three of the four terminals while a second electrical contact selectively bridges the fourth terminal and one of the first three.

Abstract: A slide switch comprising fixed contacts and a contact bridge which, by displacing a slider provided with cams, can be tilted so that one of its ends comes in touch with a further fixed contact. The contact bridge is firmly connected by being welded thereto. This results in a reliable center contact which avoids chatter and phenomena of wear.

Abstract: In a contact arrangement for high breaking capacity relays having a center contact spring movable between two cooperating fixed contact elements characterized by the contact spring having a contact member secured on each of the two opposite surfaces facing the fixed contact elements with one of the two contact members being of a larger size than the other contact member and the width of the contact spring to form a projection to which a flexible copper lead can be directly secured. As a result thereof, the switched current in a changeover contact can be conducted with low-loss across the center contact spring without an expensive center contact spring of a material which has a good conductivity being required.

Abstract: An alternate mechanism comprising a plunger (4) supported for a linear movement, a rotary cam (71) rotatably supported by the plunger, a spring (43) for biasing the plunger toward an original position (P.sub.1) of the plunger, a first stationary cam (76) which as the plunger is pushed to a first position (P.sub.2, P.sub.3) against the spring, is adapted to be engaged with the rotary cam so as to rotate the rotary cam by a predetermined angle, and a second stationary cam (32) which as the plunger supporting the rotary cam at the predetermined angle returns from the first position, is engaged with the rotary cam so as to lock the plunger in a second position (P.sub.4), and as the plunger locked in the second position is pushed again, the rotary cam is further rotated by the first stationary cam so as to be disengaged from the second stationary cam when the plunger returns to the second position.

Abstract: A switch assembly to provide snap action switching on a cam rise in a program timer includes a follower assembly on the free end of a first blade to engage the program member to reference the first blade relative to the program member. A cam follower for actuating a second blade has a relatively high coefficient of friction between it and the follower assembly so that when a steep cam rise is encountered the horizontal force from the cam rise forces the cam follower tightly against the follower assembly, to lock the cam follower to the follower assembly. At the end of the cam rise, the horizontal force is released and the snap action occurs.

Abstract: In a compact electromagnetic miniature relay comprising a contact spring (12) which is firmly clamped at one end, and which bears double contacts (9, 10) arranged on each side, and with the connecting line thereof extending vertically in relation to the longitudinal axis of the contact spring, and which are capable of being moved by an actuator (6) arranged on the armature (5), from stationary break contacts (7) to stationary make contacts (8), with said contact spring (12) being divided by a longitudinal slot (16) partly into two parallel spring legs (19, 20) pretensioned against the break contacts (7), and in which the actuator (6) engages between the clamping point (13) and the free end (11) of the contact spring, the actuator (6), according to the invention, is designed to have at least the same width as the contact spring (12) at the actuating point (17), with the longitudinal slot (16) beginning at a small spacing from the actuating point (17) and extending up to the end (11) of the contact spring (12),

Abstract: In an interlock switch used with an electrical appliance such as a microwave oven. The interlock switch has a housing having an interior front wall, and a plurality of conductive switch elements. A pair of barriers define a pair of gaps with the interior front wall for mounting a buss, comprising a first segment, formed integrally with one of the conductive switch elements, and a second segment, formed integrally with another one of the conductive switch elements.

Abstract: A thermostat having a low force output, snap-acting thermally responsive bi-metal disc operative through a pushrod to move the blade of an SPDT switch at a pre-selected temperature. The switch has a cantilever blade formed of a unitary thin metal strip having a flexible stem with a first rigid tongue extending therefrom with a heavy current carrying moveable contact thereon for a normally closed contact set. The pushrod contacts the rigid first tongue for switch actuation. A second flexible tongue extends from the stem and has an integral low current normally open contact thereon for a contact set which is closed upon switch blade actuation. Upon further temperature rise, after switch actuation, pushrod over-travel on the first tongue is absorbed by resilient flexing of the stem and second tongue thereby providing a wiping action to the closed low current contact set.

Abstract: In an M.B.B. type relay, a contact spring comprises a pair of flat spring parts integral at the base of the spring and separate at their free ends, each of which cooperates with a fixed contact. An actuating card drives both spring parts in the same direction and has a stepped portion so dimensioned that a first contact formed by one of the spring parts with one of the fixed contacts is closed before the second contact formed by the other spring part with the other fixed contact is opened.

Abstract: A differential pressure operated electrical switch construction and method of making the same are provided, the construction having a housing carrying a pair of substantially straight parallel terminals and an electrical switch for electrically interconnecting the terminals together under the control of an actuator that is responsive to differential pressure acting across the same. One of the terminals has an end provided with a substantially rectangular opening passing transversely and completely therethrough and defining a substantially straight interior edge of the one terminal and the switch includes a movable switch blade having one end carried by the other of the terminals and having another end disposed in the opening for engaging against the edge to thereby place the terminals in electrical contact with each other.

Abstract: A switch arm connector block for mounting a plurality of spring switchblades in a predetermined array for sequential cooperation with a timer cam and for providing a quick-disconnect connector for electrically connecting the blades to a wiring harness is disclosed. The connector block is formed by a plurality of insulating wafers which encapsulate a plurality of flat, parallel switchblades. The faces of the wafers are spaced from each other by projecting curbs around the perimeters of the wafers and window openings are provided in the wafers so that internal bussing may be provided in the block. End bussing is provided and the end bussing strips are covered by a protective cap having insulating fences for protecting the bussing strips.