Abstract: A switch harness assembly for the manually operated burner control valves on a range top gas burner manifold. A pair of continuous uninterrupted parallel electrical lines have individual cam operated igniter switches each adapted for rotary driving engagement with the shaft from one of the burner valves. Each switch has a pair of contact members with portions which pierce the insulation of one of the pair of leads for making electrical connection. The switch housing is assembled over the leads and cam drum. Grease provides a seal between the cam drum and housing to improve foodstuff spill resistance and an annular grease trap about the cam drum protects the contacts from the grease.

Abstract: An electrical switch selectively controls an ignition circuit and accessory circuits of a motor vehicle. The electrical switch includes a segmented 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. A segmented, asymmetrical rotary actuator and housing assembly permits placement of the switch in close proximity to other system components.

Abstract: A miniature rotary electric switch having push-in wire terminals comprises a housing which is about 1 inch in length, 1 inch in width and 0.2 inches in thickness and which includes a plurality of wire receiving openings. A plurality of Z-shaped stationary contacts are positioned inside the housing and a rotatable contactor is disposed inside the housing for selectively contacting the stationary contacts. Each stationary contact is positioned to overlie at least a portion of one of the wire receiving openings for locking engagement with a wire to be inserted therethrough. Each stationary contact includes a locking tongue, a spring finger and an intermediate arm, the intermediate arm linking the locking tongue to the spring finger. The locking tongue is connected to the intermediate arm at a first bend and the intermediate arm is connected to the spring finger at a second bend.

Abstract: In a push button switch with a star wheel having segments with trip cams and being supported in the push button so as to be rotatable about an axis which is normal to the operating direction of the push button, the star wheel is rotated, when the push button is actuated, by an unlatching structure formed on a rotation latch disposed adjacent the star wheel and engaging a projection on the star wheel. The trip cam wheel has cams which operate contact springs disposed adjacent the star wheel along the path of actuating movement of the star wheel whereby contacts are closed or opened depending on the angular position of the cams. Upon release of the push button, the push button is returned by return elements to its original position while the star wheel slides along the contact springs without operating the contacts.

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: In a rotary switch, a manually rotatable shaft turns a disk which has a plurality of riser cam segments on one of its faces. Stepwise rotation of the disk causes the cam segments to press down on flat spring contacts arranged in the switch to put the tip of one of the contacts at a time into contact with a stationary electrical contact bar that is coated with a noble metal. The spring contacts are configured such that when pressed by a cam the tips are caused to make contact with the stationary contact bar and then slide longitudinally so as the tip will pick up some of the noble metal coating from the contact bar. The tips are shaped with a traverse curve intersecting a longitudinal groove to thereby produce two points that make high unit stress contact with the stationary contact bar.

Abstract: In a rotary switch, a manually rotatable shaft turns a disk which has a plurality of riser cam segments on one of its face. Stepwise rotation of the disk causes the cam segments to press down on flat spring contacts arranged in the switch to put the tip of one of the contacts at a time into electric contact with a stationary electrical contact that is connected to a source of electric potential or, in the alternative, to relieve one of the contacts from being pressed onto the stationary contact. An index wheel mounts to the shaft and has equiangularly spaced grooves. A plastic spring having parallel legs is mounted on the base of the switch. The legs have convex detents which register in successive grooves as the rotor is indexed rotationally in a stepwise fashion. The radius of the detents is greater than the radius of the grooves between the teeth of the index wheel. The legs of the spring are prohibited from moving longitudinally and tension is maintained in the spring legs at all times.

Abstract: A non-sparking rotatable switch apparatus for a multi-speed fan includes stationary contacts positioned at two different levels relative to a plane of rotation of the switch. The rotatable portion of the switch apparatus includes upwardly extending contact sheets, some of which extend only to the lower level at which contacts are positioned and at least one of which extends to the higher level at which contacts are positioned. The higher level upwardly extending contact sheets have different widths than the lower level sheets, thereby changing the timing at which the upwardly extending contact sheets engage the respective contacts.

Abstract: A rotary switch includes a plurality of switching terminals exposed within a chamber in a housing. A fixed planar contact member, having a plurality of spring contact arms, is mounted in the chamber above the terminals. Each of the contact arms is movable out of the plane of the contact member to contact an associated one of the terminals. Each of the contact arms includes a cam follower, at least two of the cam followers being equidistant from the center of the contact member. The cam followers are operatively engaged, in a predetermined sequence, by camming elements extending axially from the bottom surface of a rotor mounted in the chamber above the contact member. The equidistant cam followers are engaged by camming elements that are spaced from the center of the rotor by a distance equal to the distance separating the equidistant cam followers from the center of the contact member.

Abstract: A rotary, push-pull switch (20) for use in an automobile has a rotating ceramic coated metal substrate rheostat (48) and a supplemental switch (52) which opens and closes a dome light bypass circuit. The supplemental switch (52) is mounted internally to the rotary, push-pull switch (20) adjacent to the rotating rheostat (48) disposed on a shaft (36). A projection (88), which is radially disposed on the shaft (36), is used to actuate the supplemental switch (52) by engaging a resilient contact leaf (60) when the shaft (36) is rotated sufficiently. The engagement of the projection (88) and contact arm (60) causes the separation of a contact (62) and terminal (64), opens the dome light bypass circuit, and precludes energizing the dome light.

Abstract: A switch capable of significantly reducing the number of parts therefor and permitting the manufacturing and assembling to be carried out with high efficiency. Only four parts consisting of a casing, a top plate or a bottom plate, a cam lever and a leaf spring each simplified in structure are required to construct the switch. The cam lever causes pressing force acting in a small magnitude on its lever section to be changed to pressing force of an increased magnitude acting on its cam section in a lever-like manner about a support shaft.

Abstract: A rotary, push-pull switch (20) for use in an automobile is combined with a supplemental switch (52) which opens and closes a dome light bypass circuit. The supplemental switch (52) is mounted internally to the rotary, push-pull switch (20) adjacent to a rotating rheostat (48) disposed on a shaft (36). A projection (88), which is radially disposed on the shaft (36), is used to actuate the supplemental switch (52) by engaging a resilient contact leaf (60) when the shaft (36) is rotated sufficiently. The engagement of the projection (88) and contact arm (60) causes the separation of a contact (62) and terminal (64), opens the dome light bypass circuit, and precludes energizing the dome light.

Abstract: A rotary switch has a case, a housing, and a rotor rotatably arranged in a chamber of the housing. The housing carries a pair of projections on both side walls and a pair of corner projections together with a pair of grooves defined in the bottom center thereof, while the case has a pair of bent legs in the center of which are defined holes to receive the side wall projections of the housing and the undersurface of which extend to form a pair of depending lugs which may be crimped inwardly into a pair of grooves defined in the housing. A contact member positioned between the rotor and the housing carries a plurality of contact fingers provided with contact projections having contact points one of which may be contacted, in accordance with the rotation of the rotor, on one of the terminal lead contacts spaced around the housing chamber caused by slidable touching on one of the contact projections by means of a cam pattern provided on a circuit board attached to the rotor.

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: An electrical switching device of the dual in-line package type. A multiple-pole switching device contains a plurality of independent switching elements aligned on individual pole planes. Each switching element includes first and second terminals and stationary contacts centered on the pole plane. A movable contact engages a first stationary contact and is held in position by a boss on a cover actuator. An actuator, captured in the cover-actuator, includes a cam that engages an intermediate portion of the movable contact to move the second end of the movable contact into engagement with the second stationary contact to complete an electrical circuit. The cam and movable contact are configured to produce a detent action as the actuator moves between open and closed positions.

Abstract: A DIP coded rotary switch which has a housing, a rotor, a base, a fixed contact and a series of contact portions. The base is formed by insert molding around a unitary metal stamping. The metal stamping is then separated into the contact portions and the fixed contact. The housing is box like and has an inner surface providing a cavity, an engagement wall which extends from a circular, through first aperture to a second through aperture, the engagement wall provides a convoluted configuration facing into the cavity. Each of the contact portions has a movable contact portion and each of the movable contact portions includes a free terminal end. The terminal end of each of the movable contact portions is positioned in superimposed, spaced relation to the fixed contact portion. The rotor includes first and second spring cam portions which flexibly bear against the convoluted configuration of the engagement wall.

Abstract: A manually operated switch that combines spring and contact functions in a low profile, machine-insertable component. The switch readily mounts onto a printed wiring board. It includes a cantilevered leaf spring member having one free end and a pair of spaced-apart fulcrums at the other end; one of the fulcrums being at the point of attachment of the leaf spring to the printed wiring board and the other being a re-entrant bend in the leaf spring in the vicinity of its center. An actuator is positioned to apply a force between the fulcrums such that the free end moves in a direction opposite to the direction of the applied force. Each spring member in combination with suitably placed contact pads is capable of providing a separate switch operation such as: "make" operation, "break" operation, or make-before-break "transfer" operation. A single actuator operates one or more spring members, each independently providing a different one of the above-described switch operations.

Abstract: This electronic component of the rotary switch type may include: a casing; a disk shaped rotor, rotatably supported in the casing, and formed with a cam pattern system; a contact system which is actuated by the cam pattern system as the rotor is rotated; and a sheet spring. The sheet spring has: two pressure portions; a substantially flat portion, intermediate between the two pressure portions, which is stressed so as to press the two pressure portions against the cam pattern system as the rotor is rotated, for providing detent action for the rotor; and a fixing portion, fixed to the casing, and proximate and connected to the substantially flat portion. There may be two each of the substantially flat portion and the fixing portion.

Abstract: The invention is directed to an electric switch having a shaft (33) with a switching coulisse (36) comprising two circular segments, with control cams (60, 64) being disposed on the one circular segment and ratchet elements (66) being disposed on the other circular segment, which cooperate with a detent spring (75) and a contact spring (70). Because the circular segments are arranged i1 a common plane, a highly compact switch is obtained.

Abstract: A push-button switch for motor vehicles having a snap-action switch system in which a snap spring integrally formed with a movable contact reed is clamped in a switching rocker. The switching rocker may be changed over between two end positions by way of a switching tappet of a push-button. Equal switching forces may be measured in both switching directions.

Abstract: An alternate or push-push switch mechanism effects movement of a contact actuator (28) from one stable position to another stable position upon a single depression of a pushbutton operator (34,38,40,42,44). Actuator movement causes a spring loaded plunger (28a) to traverse a surface of a normally open contactor (54) to effect momentary contact closure with a stationary contact (46a) during the movement of the actuator and plunger. The duration of contact closure may be controlled or modified by providing a cam on the contactor surface for engagement by the plunger. Two such switches (20a,20b) are employed in series in a control circuit for a manufacturing machine (M) whereby both switches must be operated by a human operator of the machine within the closure duration interval of the contacts of the individual switches to complete the control circuit for the machine.

Abstract: Dual-in-line switch comprises a housing assembly having a plurality of side-by-side slide housings therein. The slide housings each have a spring means therein which bears against a pivoted contact bar which overlaps the first and second switch conductors and is pivoted on one of the conductors. When the slide housing is moved, it causes rocking of the contact bar to change the condition of the switch. The spring means in the slide housing comprises two bellows springs, each of which has a fixed end which bears against the interior wall of the slide housing and a free end. The free ends are integral with each other and bear against the rockable contact bar.

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: 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: A dual in-line package (DIP) switch includes movable terminals and fixed terminals all of which are inserted in a wafer by insert molding. The two rows of terminals have terminal portions including contact portions. The terminal portions of the two rows are disposed substantially parallel to each other and spaced apart a given distance within a casing in such a way that the corresponding contact portions can either make or break contact with each other.

Abstract: A switch to be used for a power window of an automobile or the like is disclosed. It has a switch body. A knob is rotatably axially supported by the switch body. The knob has an accommodating chamber in its inside. A presser is accommodated within the chamber and biased downward by a spring. A pair of contact blades are positioned under the presser. Each of the contact blades is formed at its central portion with a V-shaped portion and inclined surfaces extending toward the right and left directions. The inclined surfaces are further extended to form contact portions. There is formed with a step between the inclined surfaces and the contact portions, so that a first step of operation and a second step of operation of the knob can be made without mistake. Stationary contacts are positioned corresponding to the contact portions. It also has a pair of contact holders. Each of the holders has a supporting piece folded upward from its one side.

Abstract: The present invention discloses a multiple switch using a rotary actuator comprising a stationary terminal block in which a plurality of stationary terminals are arranged, a movable terminal block in which a plurality of movable terminals are arranged for the elastic contact with the stationary terminals, an actuator incorporated into a body to be rotatable at a specified angle when an external force is applied by means of a plunger or the like and returning automatically to its original position by means of an elastic member when the external force is released, a first projection group having at least one projection mounted on the actuator pressing at least one movable terminal to separate the movable terminal from the stationary terminal, a second projection group having at least one projection mounted on the actuator releasing the pressure to at least one movable terminal to come in the elastic contact with the stationary terminal, an the on-off control thereof being carried out based on the principle of a

Abstract: A simplified electric switch construction is disclosed. The switch construction comprises at least a pair of confronting first and second terminals each having a bridge portion, a conductive resilient plate having one end shaped as a polygonal pyramid disposed in confronting relation to the bridge portion of the first terminal and an opposite end connected to the bridge portion of the second terminal, a presser for depressing an intermediate portion of the resilient plate to bring the tapered end into contact with the bridge portion of the first terminal, and a driver for depressing the presser. The switch construction may contain a printed-circuit board with an electric circuit thereon.

Abstract: As a disc having teeth on its periphery is turned, one end of an engagement piece is engaged with a first lock member, a first protrusion provided on the engagement piece at that end portion is disengaged from the disc, and a second protrusion of the engagement piece at the other end portion thereof is engaged with one of the teeth of the disc. Each time one of the teeth of the disc crosses over the second protrusion, the latter pivots about the point of its engagement with the first lock member, driving the free end of the second resilient piece into and out of contact with the first contact piece. When the disc is turned in the opposite direction, the other end of the engagement piece is engaged with the second lock member to disengage the second protrusion from the disc and to engage the first protrusion with the periphery of the disc.

Abstract: A multicircuit rotary selector switch having no external terminals is disclosed. A two-part interlocking housing journals a user-rotatable shaft carrying a stack of coaxially oriented, multilobed cam discs, each disc defining a tier level within the housing. Engageable with each disc and lying in its tier level is a pair of elongated movable switching elements each having a wire gripping end portion, a moving contact end portion, and an intermediate cam follower portion riding the lobes of its associated cam disc, each movable switching element being configured as a third class lever. One or more fixed switching elements, each including a contact portion and a wire gripping portion, are located adjacent the contact end portions of each of the moving switching elements. Portions of the fixed and movable switching elements are sandwiched between the two parts of the housing to maintain them in proper position relative to each other and to the cam disc stack.

Abstract: A switch housing includes a body and a cap. The body contains terminal recesses housing respective terminal plates for fixed and movable contacts. A plurality of resilient contact fingers are mounted on one terminal plate and a single contact member is mounted to each of the remaining terminal plates. The body includes a switch shaft bearing. A switch actuating shaft is rotatably mounted in the bearing and projects outwardly from the body. The cap engages the (sic) switch shaft and terminal plates to retain the shaft and plates within the body. Latching structure on the cap and body cooperate to retain the cap and body in assembled relationship.

Abstract: An interior lighting system for vehicles that has a switch with at least three "on" stages. A shaft of the switch has three cams that activate spring contacts each of which can be tensioned against a fixed contact. The cams are mounted one above the other and at a mutual angle of 45.degree.. At least one cam activates two spring contacts.

Abstract: A pivotal hookswitch mechanism which includes a transverse camshaft supported between actuating arms of a cradle lever. The camshaft carries a plurality of transversely spaced contact spring operating cams, each cam positioned between respective contact springs of a spring pair. The camshaft is carried with its transverse ends within bearing openings of an enclosing housing, the housing enclosing the cams and contact springs. The contact springs are leaf springs resting in two parallel arrays of slots in the housing, the springs being identical. The housing is constructed of two identical shell members each forming a half of the housing, with one half being inverted relative to the other to form the central cavity for the operating components of the mechanism. The housing provides a dust-tight enclosure for the contact springs and cams with entry openings into the housing cavity filled, the enclosure structure serving as a pivot axis and pintle for the actuating lever.

Abstract: A pivoval switch mechanism usable as the hookswitch of a telephone instrument. The switch mechanism includes a transverse camshaft supported between actuating arms of an actuating lever. The camshaft carries a plurality of transversely spaced contact spring operating cams, each cam positioned between respective contact springs of a spring pair. The camshaft is journaled adjacent its transverse ends within bearing openings of an enclosing housing, the housing enclosing the camshaft, cams and contact springs. The contact springs are leaf springs resting in two parallel arrays of slots in the housing, the springs being identical. The spings each have an angled ridge contactor positioned to engage a ridge on a like spring member spaced therefrom.

Abstract: A manually operated switch, typically of DIP size, having a slightly deformable over-center cam rotor journalled in a hollow housing. Symmetrical projections on the rotor move two opposed cantilever springs into and out of electrical contact. The deformation of the rotor provides detent action. Stops are not required. Single wiping action occurs upon closing the contacts.The cantilever springs may be ridged and of unequal length, or not ridged and of equal free length.

Abstract: A rotary switch having a multiple throw axial cam rotor and operatively aligned detent teeth. One held stationary contact spring spider has plural radially disposed axially-movable cam follower switch contact arms engaging the axial cam, and also has plural detent springs engaging the axial detent teeth. A base has stationary contacts to be selectively engaged by the switch contacts, and a journal post upon which the rotor is rotatable. An externally accessible shaft upon the rotor has a surrounding resilient "O" ring. A housing sealed to the base and bearing upon the "O" ring seals the switch. The switch may be fabricated in DIP size and contact configuration.

Abstract: A dual in-line package miniature electrical switch module has its active members, the contact members and sliding actuators, mounted on a unitary frame member to minimize misalignment problems. The cover serves primarily a protective function. The contacts have integral terminal pins and clamp to an edge of the frame to simplify assembly. A substrate having an electrical circuit pattern applied on one or both major surfaces can be contacted and clamped by the contact members against the bottom of the frame to form an integral switch and circuit module, such as an attenuator switch. Two or more sliding actuators may be rigidly interconnected to form a gang unit.

Abstract: A miniature DIP switch (10) has actuator levers (82) projecting from a side of the housing (12). A plurality of cantilevered moveable contact arms (72) are supported by a section (34) of the base (30), and a plurality of oppositely disposed cantilevered contact arms (62) are supported by a complementary section (32) of the base. A plurality of insulative rotatable lever actuators (80) are supported each by a respective moveable contact arm (72). Each actuator (80) comprises a lever (82) projecting from a respective opening (18) In the housing (12), an arcuate bearing surface (86) engaging an arcuately shaped boss (22) in the housing, a pair of depending side walls (88) each having arcuately shaped ends (90), and a cam protrusion (87) disposed between the depending side walls (88) and engaging its respective moveable contact arm (72).

Abstract: A miniature sealed toggle switch having a housing (2,4) that is sealed by a gasket (16) sealed to the toggle lever by a groove (12b) and RTV (18) and to the housing by a ridge (16d) and a tapered edge (2e) on the base, and by two grooves (6d, 6e, FIG. 3) on the terminals that prevent leaks under different expansion of the metal terminals (6) and the molded base (2a, 2b, FIG. 3). Contactor erosion is reduced by a drop (26d) on the contactor causing arc movement on opening. Grooves (2g, 2h) and arc shields (2f) in the base prevent formation of conductive paths. A stepped taper (12d) on the toggle lever and a tapered hole (28a) reduce wear. Nickel plating of the brass lever (12) and aluminum bushing (4a) insure ground of the lever. The contactor configuration (32c, 32d, FIG. 5), clearance between the toggle lever and actuator, and energy storage in conical spring (30) provide non-stall, non-tease operation. The radius of the actuator tips (28c) are maintained by the radius (32a, 32b, FIG.

Abstract: A rotary switch for insertion in switch panel openings includes a housing (1), knob (3), a detent body (2) for limiting the knob position in the housing, a variable position coupling (7), a switch controlling cam member (8) and spring contact switches (13) retained in fixed position in the housing. Switch followers (12') engage the cams (12) of the cam member (8) to operate the switches in predetermined sequence and modes that can be varied by varying the cam arrangement on the inner and outer surface of the cam member. The switch program can also be varied by varying the relative angular position of the knob relative to the cam member through the variable position coupling.

Abstract: The invention relates to a push-button or key switch comprising at least one contact member stationary in a case and a switch blade whose contact tongue is resiliently pivotal from one switching position into another switching position by means of a key push member supported on a return spring.

Abstract: A multipolar switch has elements which can be readily assembled and combined for obtaining closing conracts or opening contacts. The body of the apparatus comprises a mounting base and an upper portion, the mounting base receiving an operating member which is movable in translation, the upper portion receiving a cover to close laterally some housings for terminals, some passageways for the retention of contacts, and some breaking chambers.

Abstract: A switch having a pair of operating levers located within a housing in side-by-side relationship and in which the pair of operating levers are supported for conjoint and independent movement about a common pivot axis for selectively opening and closing contact members which establish a plurality of lighting circuits.

Abstract: An electrical switch comprises a housing (1) carrying a first, fixed contact (3) and a second, movable contact (6) in the form of a resilient contact arm secured to the housing (1) at one end. The resilient contact arm comprises a single inner limb (9) and two outer limbs (10, 11) one of which is engaged by the actuator member (15) and the other of which engages the fixed contact (3) on operation of the actuator member. The housing (1) is preferably of one-piece construction, the actuator member (15) being retained in the housing (1) by a part of the second contact (6).

Abstract: An electric switching device on a rotary cylinder lock, particularly for gasoline pumps, with core pins which are controlled by the key, the stroke of the core pins bringing contact lugs in contact position to counter-contact surfaces. The core pin acts on a transmission lever, the free end of which lever, which end forms the contact lug, slides over a row of adjacent contact surfaces.

Abstract: A multi-contact rotary switch in which arcuate cam lobes on the planar faces of a rotatable disc-shaped cam rotor selectively engage a plurality of switch elements. Each switch element is attached to one of two switch blocks positioned adjacent to either cam rotor face. Slots in the switch blocks laterally confine the switch elements to preserve their alignment. A raised annular bearing on the cam rotor face maintains the position of the cam rotor relative to the switch blocks. Terminal extensions from the switch elements extend perpendicular to and away from the planar faces of the cam rotor.

Abstract: An electrical switch comprises a base (1) of electrically insulating material carrying an input contact (2) and a plurality of output contacts (3); a bridging contact (5) fixedly mounted on the base (1) in permanent connection with the input contact (2), and having a plurality of resilient contact arms (6) respectively associated with the output contacts (3), and an operating member mounted on the base and formed with a plurality of cam projections (11) adapted and arranged to engage the contact arms (6) of the bridging contact (5) as the operating member (8) is moved relative to the base (1), thereby to urge the contact arms (6) into contact with the associated output contacts (3).

Abstract: A switching device comprising a spring pile-up assembly including a plurality of pairs of cantilevered stationary and movable contact springs secured between a pair of support members. A follower card is slidably mounted on the top portions of the support member allowing the follower to move in a plane 90 degrees to the contact springs. The tips of the movable contact springs protrude through openings in the follower card. A cam card including cam portions is slidably mounted to one of the support members perpendicular to the follower. As the cam card is moved the cams engage an edge of the follower causing it to be displaced in its plane of motion sufficiently to open a selected number of contact springs while allowing another selected number of contact springs to close.

Abstract: A multiple cantilever spring contact switch has a plurality of cantilever spring contacts, in one or more series, with the contacts of each series clamped between surfaces which provided a predetermined relative inclination of the contacts. A pivotal member is mounted on the switch assembly for actuation by an operating member, the pivotal member in turn actuating the contacts. The contact between operating member and pivotal member is localized so that misalignment between operating member and the switch assembly does not affect actuation of the contacts. Such misalignment can occur when the switch assembly or operating member or both are mounted on printed circuit boards. The switch is particularly suitable for a hook switch of a telephone.

Abstract: A switching device comprising a spring pileup assembly including a plurality of pairs of cantilevered stationary and movable contact springs secured between a pair of support members. A follower card is slidably mounted on the top portions of the support member allowing the follower to move in a plane 90 degrees to the contact springs. The tips of the movable contact springs protrude through openings in the follower card. A cam card including cam portions is slidably mounted to one of the support members perpendicular to the follower. As the cam card is moved the cams engage an edge of the follower causing it to be displaced in its plane of motion sufficiently to open a selected number of contact springs while allowing another selected number of contact springs to close.