Abstract: An apparatus for housing and securing a switch operating mechanism. The switch mechanism housing includes a housing member with an integral pivot bushing, a housing cover, an operating mechanism including a push rod assembly, a rotor cam, and mechanism shaft. The operating mechanism is installed and fixed in the housing member. The housing member holds captive the operating mechanism without requiring that the housing cover be in place, thereby facilitating fabrication and assembly.

Abstract: A mount for a disc-type switch having a body that is centered upon a mounting flange. The mount includes a substrate having a central opening that permits the switch and mounting flange to be inserted into the opening. The substrate has a depression formed therein on one side of the opening that complements the shape of the flange and has a size that will accept about one half of the flange therein when the switch is passed into the opening and the flange rotated. At this time the other half of the flange is brought into contact with the top surface of the substrate. A threaded fastener secures the flange to the substrate so that at least one half of the flange is supported by the substrate to resist the downwardly directed forces acting upon the switch and the other half of the flange is supported in the housing to resist upwardly directed forces upon the switch.

Abstract: The invention concerns a protection relay, in particular of the thermal type, recessed relative to its front face (24), a recess acting as through passage for interconnection of the conductors (C) between the terminals of the relay control (23) and of the contact switch (16). The recess (27) is concealed in normal operation by a shutter consisting of a flap (26) or a fixed part (26′) of the housing (20). The interconnection conductors can consist of individual cables (C) or can be integrated to a precabling addition (40) housed in the recess.

Abstract: An electrical functional device for use in the field of aviation, for example, a safety switch, is described. The functional device has a housing out of which a cylindrical fixing neck projects. The fixing neck contains, on an outer circumference thereof, a fine-pitch threading for screwing on a nut, and carries, at a distance from the end thereof that is attached to the housing, a radially protruding bearing flange. The bearing flange serves to hold the device in a fixed position, in which the fixing neck projects through a fastening hole of a wall element and is held therein against the bearing flange by a nut. The fixing neck is a one-piece part made out of plastic. It contains, between the end of the threading thereof and the bearing flange, an unthreaded shaft area, which is coaxial in relation to the fixing neck.

Abstract: A decorative frame that may be made of metal is arranged at the periphery of a manual operation button, and the manual operation button with decorative frame are designed so that they may be fixedly attached to the exterior cover of a camera body within an opening in the cover.

Abstract: A combination switch and universal mounting bracket has a switch and a universal mounting bracket. The switch includes a switch housing having a face, four sidewalls, and a rear. The universal mounting bracket includes a mounting base plate having a housing aperture shaped to slidably engage the switch housing. Three mounting arms are pivotally attached to a mounting side of the mounting base plate, each of the three mounting arms having a mounting aperture on a terminal end for mounting the universal mounting bracket onto a mounting surface with a screw. A base end of each of the three mounting arms is pivotally attached to the mounting base plate such that each of the three mounting arms pivots between a first position in which the mounting arm is generally orthogonal to the mounting base plate, to a second position in which the mounting arm is generally on the same plane as the mounting base plate.

Abstract: A push-on switch comprising an insulating resin case 21 which contains a main body 24, viz. a central fixed contact point 22 and an outer fixed contact point 23 fixed on the back wall of a front-open recess 21A; a domed movable contact 27; and an operating body 29 supported by a cover 30. The case 21 has an overhang 25, which is stretching horizontally from the case in the upper part for a size greater than the size of main body 24. The overhang 25 is provided with terminals 26 electrically coupled with the central fixed contact point 22 and the outer fixed contact point 23, respectively. In the above-configured switch, the constituent parts are simple-formed, which can be manufactured through easy mold machining or other processing methods.

Abstract: A lead wire strain relief connector and switch mount is configured to be attached to a surface of an electrical device to secure lead wires of a switch employed in the device, resisting the lead wires from being pulled from the device. The connector and switch mount also includes clasps that securely hold the switch without adhesives or separate fasteners.

Abstract: An adapter plate assembly for mounting a stored energy assembly to a circuit breaker assembly, the adapter plate assembly comprising a mounting plate, the mounting plate comprising a circuit breaker toggle aperture that receives a circuit breaker toggle, at least one mounting aperture for mounting the adapter plate assembly to the circuit breaker assembly, wherein the mounting plate has at least one hinge connector that hingedly connects the stored energy assembly to the mounting plate, wherein the mounting plate further comprises a circuit breaker trip aperture; a trip arm mounting aperture; a trip arm comprising a trip flange at one end for being contacted by a tripping member of the stored energy assembly, a mounting member for rotateably mounting the trip arm to the mounting plate, and a trip extension member, located between the trip flange and the mounting member, that is used to actuate the tripping of the circuit breaker assembly.

Abstract: The present invention is a membrane switch. The membrane switch includes a switch assembly having a switch frame coupled to the switch assembly. The switch frame is sandwiched between various layers of the membrane, thus holding it in place. The lower surface of the membrane is coated with an adhesive. Once installed in an electronic device, the adhesive layer secures the membrane as well as the switch assembly in place. The adhesive layer serves to form a waterproof barrier between the membrane and the switch assembly.

Abstract: A lock-down device for use in a circuit breaker assembly. The device comprises a base for releasably securing the device to the assembly's saddle, an arm portion connected to the base, and a hand portion, connected to the arm portion, for engaging the housing of a first circuit breaker such that when the first circuit breaker and a second circuit breaker is mounted on the saddle the hand portion is intermediate the first and second circuit breakers and the first circuit breaker cannot be inadvertently removed from the saddle. In an alternative embodiment, the hand portion of the device comprises flanges for engaging and permitting the lock-down of the second circuit breaker as well.

Abstract: A receptacle for a switch in a control panel accepts either a long or a short switch. The receptacle accommodates a footprint of a long switch and has structure supporting a set of bearing areas for engaging a housing of a long switch and support structure for a second set of bearing areas for engaging a housing of a short switch. The bearing areas for the short switch are positioned adjacent to long edges of the footprint of the long switch. Such receptacles permit design of a standard control panel which accommodates different combinations and arrangements of control switches.

Abstract: A switch assembly (10) for installation on a dynamoelectric machine (M). An electrical overload switch (12) is interconnected with the dynamnoelectric machine and electrical conduits (C) are routed thereto for resetting the dynamoelectric machine after it is shut down due to an overload condition. A conduit box (14) has opposed sidewalls (16, 18) and endwalls (20, 22), and an open top and bottom. A bracket (30) on which the switch is mounted is sized to fit in the box for a switch element (32) of the switch to be positioned adjacent an opening (34) in one wall of the box. Dimples (44a, 44b) are formed in the wall against which the bracket is installed. The dimples extend inwardly into the interior of the box and act as stops for the bracket for properly positioning the bracket and switch within the box. A plurality of knockouts (K1-K6) are formed in the sidewalls for providing an opening through which electrical conduits are routed to the switch when a knockout is removed.

Abstract: In a switch device, a metal stamping has a first group of connector terminals arranged in one line among plural lines of arranged connector terminals and is constructed by one metal stamping together with a wiring pattern. The metal stamping is subjected to an insert molding process to form an insert molding. A second group of connector terminals, arranged in another line, among the connector terminals arranged in plural lines, are formed from parts of metal pieces which are separate from the metal stamping. The second group of connector terminals are press-fitted in the insert molding. In the switch device, the manufacture of the metal stamping requires minimal bending steps, and the manufacture can be achieved with the use of a simple stamping metal mold.

Abstract: A circuit breaker mounting bracket is comprised of a generally upright support member, a base member extending generally perpendicularly from a bottom of the support member, a flange depending from a distal end of the base member at an angle less than 90.degree., and a brace member depending obliquely from the back of the support member. The flange is adapted to be secured to a support surface, such as a deck within an air conditioning or furnace cabinet. The brace member and the flange cooperate to maintain the bracket in a rigid, upright position within the cabinet. The bracket includes a din rail comprising two generally L-shaped flanges integrally formed with the support member, whereby one or more circuit breakers are mountable in a fixed position relative to the bracket. A C-shaped channel is formed on the support member between the L-shaped flanges for receiving two retaining members, which inhibit lateral movement of the circuit breaker(s) mounted on the bracket.

Abstract: A safety device on a printing press, including at least one switch, a mechanical protective device changeable in position for operating the switch, the switch being fastened to a frame of the printing press so as to be adjustable in position and releasable from the frame, and connecting elements by the aid of which the switch is firmly seated on a base plate and held immovably on the frame, includes an intermediate plate formed of a relatively soft material disposed between respective fastening surfaces of the base plate and the frame, the intermediate plate being secured in position against movement in a direction parallel to the fastening surfaces, the fastening surface of the base plate having at least one projection formed of a material relatively harder than the relatively soft material of the intermediate plate, the projection being pressable into the relatively soft material of the intermediate plate by holding forces exerted by the connecting elements perpendicularly to the respective fastening surfac

Abstract: A circuit breaker (1) mountable on a channel section rail (8) with a pair of elongate flanges (9, 10) and secured in position by a mounting clip (17) mounted in an elongate groove (18). The mounting clip (17) is movable along the groove (18) from a disengaged position to an operating rail engaging position with a release head portion (23) of the mounting clip (17) being within the outer boundary of the circuit breaker housing (2).

Abstract: An electrical switch assembly actuatable by a rotatable member wherein the switch assembly includes a polysulfone housing having a hub with a peripheral camming surface and a hub aperture. The hub is rotatably disposed in the housing wherein the rotatable member is disposable through a housing aperture and into the hub aperture for engagement with the hub. A pair of substantially similar resilient electrical contact blades are disposed in the housing in spaced relation wherein each resilient electrical contact blade has at least one wire engagement portion accessible through a wire aperture in the housing. The hub is rotatable by the rotatable member so as to cause the peripheral camming surface of the hub with one of the resilient electrical contact blades and thereby flex the engaged resilient electrical contact blade into electrical contact with the other resilient electrical contact blade. The housing is a two part assembly having a fluid resistant interface.

Abstract: A lever operated rotary reversing switch wherein a lever is snap-fit attached to the switch housing with a portion of the lever inserted under an overhang on the housing to maintain that portion of the lever against the exterior surface. A detent is provided between the overhang and the end of the lever to direct the forces longitudinally in the plane of the lever. A rotor plate located exteriorly of the housing is connected to the rotor by an axial shaft, and an eccentric received in a slot in the lever for providing a driving coupling between the lever and internal contact mechanism is located on the exterior surface of the rotor plate.

Abstract: A wall mountable timer switch adapted to be installed in standard single and multiple-ganged electrical connector boxes includes an elongated housing having an electrical timer circuit wherein the elongated housing includes first and second unfinished edges. Each of the unfinished edges defines an elongated mating surface which extends along a length thereof. The elongated mating surfaces are configured to receive an associated end termination element having at least one corresponding elongated mating surface for mating with one of the said mating surfaces of the first and second unfinished edges.

Abstract: A bracket for a cabinet, such as the type used for television sets or other electronic devices, wherein the cabinet includes a first flange having a predetermined flange thickness. The bracket includes a housing having top and bottom ribs and a mounting flange having an aperture. The top and bottom ribs are spaced apart from the mounting flange by a predetermined distance which is less than the flange thickness. As such, upon insertion of the first flange between the top and bottom ribs and the mounting flange, a press fit is formed. This removably secures the top and bottom ribs and the mounting flange to the first flange without the use of fasteners. In addition, the housing includes at least one clip element for removably securing a printed circuit board having a switch which is accessible through the aperture.

Abstract: A one piece mount for mounting switches is disclosed. The mount includes a face plate provided with an aperture in which a push button switch or a key operated switch may be located. A support bracket is located on the rear face of the face plate being formed as one piece with the plate and is provided with holes in which push button switches may be mounted. In one version of the mount a raised portion is provided on the rear face being formed as one piece with the face plate and the support bracket wherein the aperture extends through the raised portion. In use, this version of the mount is provided with a key operated lock cylinder mounted in the aperture and having a cam arm pivotally mounted on the rear face of the lock cylinder.

Abstract: Apparatus is illustrated for positioning longitudinally spaced switches upon a base member which member may be the cylinder of a robotic control apparatus and which apparatus achieves a clamping action through the use of a rail (A), a locking bracket (B), a rocker arm (C) fixed upon the rail and an abutment (D) carrying a bearing member (E) forcing the bracket into engagement clamping both sides of the switch against the base member.

Abstract: Apparatus for positioning magnetic switches in alignment on a base member has a contact edge (C) at one end and a threaded post (D) adjacent the other end. Wedging the contact edge (C) into engagement with a lower surface of an elongated groove (A) is accomplished by tilting the switch upwardly at the other end by means of threadably manipulating the post so as to extend downwardly engaging the stop members (E) with the inward projections (B).

Abstract: A bolt-on, duplex circuit breaker having an external, integrally formed key member designed with a truncated pyramidal shape. The pyramidal shape is used to discourage tampering aimed at its removal. A panelboard into which bolt-on, duplex circuit breakers are mounted having mounting rails onto which the circuit breakers are disposed. The mounting rails have cooperating, key member accepting notches that act in conjunction with the key member integrally formed upon the circuit breaker for limiting the number of bolt-on, duplex circuit breakers that are insertable within the panelboard.

Abstract: Complexity and unreliability in a mounting structure for a switch (40) used to sense the position of another object is avoided in a switch and mounting structure that includes a switch body (46) with a movable switch plunger (48) extending from one end (50) of the body (46). The body (46) has an outwardly opening groove (52) and a mounting bracket (44) is adapted to be secured to a desired object (70). The mounting bracket (42) has a base section (98) for mounting purposes and two spaced legs (100,102) extending therefrom. A relatively large hole (76) is in one of the legs (102) and sized to receive the switch body (46) while a relatively small hole (78) is in the other of the legs (100) and sized to slidably receive the plunger (48). A resilient lock ring (44) is located in the groove (52) and in abutment with one of the legs (102) to hold the end (50) in firm abutment with the other of the legs (100) thereby securely mounting the switch body (46).

Abstract: A vandal resistant push button assembly has a guide ring attached to a mounting plate spaced from a face plate such as an indicating and announcing device or a modular wall assembly of an elevator car. The guide ring has a first shoulder which cooperates with a snap ring engaging a first annular groove formed in the guide ring for retaining the ring in an opening formed in the mounting plate. There is play between the periphery of the opening in the mounting plate and the outer diameter of the guide ring such that the guide ring can be aligned with respect to an opening in the face plate and the snap will cover the gap defined by the play. A push button slidably extends through the guide rings on first and second guide surfaces to actuate a switch and a second shoulder formed on the push button engages a stop surface on the guide ring to prevent further travel in the actuation direction.

Abstract: The housing for an electric snap action switch has a front section with a frame having a surface serving to abut the front side of a mounting plate, and a coaxial rear section with a surface facing away from the surface of the frame and serving to abut or to be placed adjacent one side of a circuit board. A nut mates with an externally threaded tubular portion of the front section to maintain the surface of the frame in abutment with the mounting plate. The two sections are separably coupled to each other by resilient male detent elements which are provided on the front section and extend into complementary female detent elements of the rear section. The housing acts as a distancing element between the mounting plate and the circuit board, and its rear section has a recess for a switching unit which is secured to the circuit board and can be actuated by movable parts which are installed in the front section. The rear section is secured to the circuit board by screws.

Abstract: A vehicle switch means includes an electric switch operatively closed or opened as driven by a central spindle controlled by a vacuum controller communicated with an inlet manifold of a car engine, whereby when the car is subject to a heavy load, the weak vacuum suction force in the inlet manifold will not suck a diaphragm in the vacuum controller and the spindle will be resiliently restored outwardly to switch off the electric switch to stop the running of compressor of a car air conditioner, thereby reducing the car engine load and being helpful for climbing a steep surface.

Abstract: A microswitch is mounted between the sides of a U-shaped channel bracket. The sides of the bracket are pulled together to clamp the switch therein by a screw passing through a hole in the switch body. Tabs extending from the edge of the bracket sides move the switch by camming as the sides are pulled together to cause one side of the switch mounting hole to be registered against the screw to maintain the switch securely in one position on the bracket.

Abstract: An adapter converting a standard plug-on, bolt-in power distribution panelboard type circuit breaker for use in industrial control applications comprises a molded insulating base having a rail engaged by a hook of the circuit breaker and a conductor having a first terminal compatible with the circuit breaker terminal and a second terminal comprising a wiring connector. The adapter is mountable to a panel or within an enclosure, flat against a panel or on a DIN rail or is attached to the breaker when the latter is front-mounted to a door or panel. A snap-on catch for mounting plate and DIN rail mounting is deflectable by an attached breaker to pinch the grip of the catch on the plate or DIN rail to prevent lateral movement, and by a screwdriver or the like from the front to release the base from the plate or rail. The plate accommodates plural bases in ganged relation to provide multiple capability mountable as a unit.

Abstract: A constant-current light sensing system employs a constant-current diode in series with the power lead to a photoconductive cell. This diode provides a substantially fixed current through the cell and enables the system to be designed such that it can make maximum use of the linear portions of the cell's output response curve, and maximum use of the range of a potentiometer's settings. The cell used in conjunction with the system is received in a housing that is easily mountable to a wall or ceiling surface by an adhesive material.

Abstract: A self-locating push button switch box for rapid mounting comprising, a generally parallel piped housing, formed from a planar blank, and comprising an elongated top wall, elongated bottom wall, elongated side wall, rear end wall, and front end wall, a spacing tab integral with one of the walls and an adjacent top or bottom wall and projecting forwardly of the front wall a predetermined distance; and a stop tab integral with the spacing tab and projecting perpendicularly outwardly therefrom, the front wall defining a push-button switch mounting opening centrally therein, the rear end wall defining an opening for electric wiring for connection to an elongated push-button switch mounted within the opening and having a biased switch button projecting forwardly beyond a plane defined by the stop tabs.

Abstract: A push-button switch wherein proper operation is always assured. The push-button switch includes an insulating case of an enclosure structure having a side wall from which a plurality of connecting terminals and a dummy terminal are exposed outside. The insulating case further has a first recess formed in a lower face thereof on the side of the dummy terminal which opposes to a printed circuit board to which the push-button switch is soldered, and a second recess formed in the first recess and located below the dummy terminal. A projected step portion is provided around the dummy terminal and has a side face having a sufficient height to prevent flux of cream solder from advancing to the location of the dummy terminal.

Abstract: A control device, switch unit therefor and methods of making the same are provided, the electrical switch unit comprising a switch having a movable actuator, a lever pivotally carried by the switch unit and having one end adapted to be operatively interconnected to a movable part of a control device so as to be pivoted by the movement thereof, the lever being operatively interconnected to the actuator to operate the switch between the different conditions thereof in relation to the pivoted position of the lever, and a pair of mounting plates respectively having holding structure that hold the switch between the plates and respectively having pivot structure that pivotally mount the lever between the plates whereby the plates, the switch and the lever form a self-supporting switch unit.

Abstract: A printed circuit board slide switch in which switch actuation occurs by movement of a slide actuator perpendicular to the printed circuit board on which the switch is mounted is disclosed. Terminals having leads in a zig-zag configuration are inserted molded into an insulative body which has a plurality of individual compartments in which side-by-side contact portions of adjacent terminals comprising switched terminal pairs are located.

Abstract: A control panel face for mounting at least one control member. The control panel face includes a base having a face surface onto which at least a portion of the control member is positioned, at least a portion of the face surface being magnetic; a flexible magnetic sheet for being removably attached to the face surface of the base over the control member; and a flexible cover sheet for being attached to the magnetic sheet and for covering the aperture through the magnetic sheet, the cover sheet including indicia for identifying the control member.

Abstract: An adjustable mounting assembly for a limit switch is disclosed which includes a stationary H-shaped base plate attachable to a machine table, a movable plate slidably mounted on the base plate upon which a limit switch is carried, an adjusting screw interconnecting the plates, and locking screws which are inserted through elongated slots in one of the plates into threaded holes in the other plate which lie along the centerline of the slots for locking the plates together once the desired position of the switch has been obtained. The assembly is adaptable for moving the switch along its longitudinal centerline, along a line parallel with the table and perpendicular to its longitudinal centerline, or in a direction normal to the table and perpendicular to its longitudinal centerline. The movable plate contains at least one tab which projects into one of two outwardly opening slots in the base plate which are separated by a cross member.

Abstract: A modular snap-in keypad apparatus includes a planar frame member having a plurality of button accommodating apertures and a plurality of mounting posts extending therefrom. An elastomeric key button assembly has a planar surface containing a plurality of apertures which are positioned to receive each post. The button assembly comprises a plurality of raised elastomeric button structures which extend through an associated button accommodating aperture when said posts of said frame assembly accommodates the apertures in the button assembly. A planar switch assembly has a plurality of apertures which are congruently positioned with respect to the posts to enable the contact assembly to be positioned with respect to each button so that a conductive area of the button contacts the contact assembly when the button is depressed.

Abstract: An insulating casing for enclosing a thermal switch, with the insulating casing having a plastic envelope, in which at least one oxide ceramic part is arranged on one side of the thermal switch, between the latter and the envelope.

Abstract: A pressure switch has a plunger, axially displaceable by the pressure being measured, which enables a contact pin of a microswitch to be actuated. Between the plunger and the contact pin there is arranged a rocker. The microswitch is fastened to the housing of the pressure switch so as to be displaceable in the main extension direction of the rocker. This provides a way to vary the step-up ratio between the plunger motion and the contact-pin motion, whereby the magnitude of the hysteresis of the pressure switch can be varied.

Abstract: A power distribution board includes a blind cover and main and shunt interrupters. A blind cover has an engaging tab disposed at one end for engaging an edge of the window, and a foldable engaging tab at the other end of the blind cover main body. The foldable tab holds, in cooperation with the engaging tab, the blind cover to the distribution panel board cover. The shunt circuit interrupters are mounted in a side-by-side relationship with an insulating partition wall interposed therebetween. The partition wall is accommodated within recesses in the side surfaces of the interrupters, so that dielectric breakdown does not ocur around the gas exhaust ports. One side of the main circuit interrupter is secured to a base plate by the rigidity of a connecting conductor while the other side of the interrupter is secured in a usual manner.

Abstract: A short travel key switch comprising an electrically insulating base having a bottom and a cylindrical lateral wall defining a cavity closed by a cap. A central contact and a lateral contact are mounted on the bottom. The periphery of a switching element received in the cavity is in electrical contact with the lateral contact. The element is elastically yieldable to establish an electrical connection between the two contacts in response to an axial load exerted on its convex face by the facing portion of an actuator. The central contact is mounted flush with a plane central portion of the bottom. The facing portion of the actuator which engages the central contact is flat.

Abstract: The mounting plate for a proximity switch for sensing the position of a piston within a fluid operated, expansible chamber cylinder. The mounting plate comprises a flat portion with two notches formed therein adjacent opposite sides thereof and an arcuate flange adjoining the flat portion having means forming an aperture therein. The proximity switch is mounted onto the tie rod of the expansible chamber cylinder, with the mounting plate interposed therebetween with the arcuate flange thereof positioned to be concentric with and spaced apart from the surface of the expansible chamber cylinder. A threaded fastening device is inserted through the aperture and turned until the proximity switch is correctly positioned.

Abstract: Inner and outer electrical switches are attached in ganged face-to-face relation to a mounting plate by a screw which extends through two upper alined holes of the switches, by a pin which projects from the plate and into a lower hole of the inner switch, and by an L-shaped locking element having one leg extending through a lower hole of the outer switch and into the lower hole of the inner switch. The other leg of the L-shaped locking element is torsionally loaded and is adapted to be clamped between the head of the screw and the outer side of the outer switch.

Abstract: Pin terminals projecting from a side of a switch housing are led out upon being arranged in one direction and in a plane parallel to the side of the switch housing, and distal end portions of the pin terminals are secured to a printed circuit board. This reduces the space needed for mounting the switch, facilitates the mounting of the switch on the printed circuit board and mounts the switch more reliably.

Abstract: A keyboard switch comprises a key switch, a key top mounted on the key switch, stress transmission means for transmitting a depression force of the key top to a plurality of areas of the key top, and a common member for supporting the stress transmission means and engaging the key switch.

Abstract: A switch device comprises a chassis with a number of key-tops, a switch unit, and a support board, piled up in that order and coupled at their centers by one screw. Plural screws pass through elongated screw holes bored in the support board and oriented radially around the center and are threaded to bosses of the chassis. The bosses pass loosely thru-holes bored in the switch unit.

Abstract: The switch guard assembly is comprised of an outer plate and a back plate. The switch guard assembly also involves a housing that is mounted against a panel, such as a cinderblock wall or a door jamb. The panel has inner and outer panel faces. The housing assembly is resistant to unauthorized access to the interior thereof. The outer plate and back plate are mounted respectively against the inner and outer panel faces. Both the outer plate and the back plate have openings. A cinderblock or door panel is provided with an opening that will eventually communicate with the openings of the outer and back plates. A pipe includes first and second ends located in the panel openings with the first pipe end passing through and beyond the opening in the outer plate. The second pipe end passes through and beyond the opening in the back plate.

Abstract: A switch with fastening holes in its housing is stably mounted on the web of a switching device. A plastics fastening element is used, which has three portions with differing diameters and which are inserted with press-fit in the fastening hole of the switch, on opposite sides of the switch, in receiving bores of webs aligned parallel to one other.