Abstract: A control panel assembly of a microwave oven which is easy to use, including: a front panel section having first and second cooking mode single-functional buttons comprised of a plurality of single-functional buttons for first and second cooking modes of the microwave oven, and a slot formed on the middle portion of the front panel section between the first and second cooking mode single-functional buttons; a movable switch disposed on the front panel section which is moved laterally along the slot of the front panel section; and a mode shifting switch for shifting cooking modes to the first and second cooking modes by the movement of the movable switch, wherein the first and second cooking modes are automatically selected by the movement of the movable switch, and the cooking mode single-functional button of the selected mode is exposed outward for pressing by a user. Accordingly, by simply moving the movable switch in a lateral direction, the cooking modes of the microwave oven are automatically selected.

Abstract: An electrical switch includes a body, pressure-actuated buttons, switch terminals having respective parts forming internal switches, cam sliders extending side-by-side between the buttons and the parts for movement by the buttons to turn on and off the internal switches. The buttons include a first button for turning off all but the first of the internal switches. The other buttons turn on the other internal switches. The first button incorporates a movable cam engageable with the sliders for momentarily turning on the first internal switch after the other internal switches have all been turned off.

Abstract: A push-button switch of simple structure and highly reliable operation capable of safely stopping equipment even when the push button of the push-button switch fails to return to its normal position while the push-button switch for operating equipment is being operated. And a push-button switch device capable of easily judging the presence or not of any failure of the push-button switch for operating the equipment by using that push-button switch.

Abstract: This invention is an interlocking device for a push-button switch in compact size and with a mechanically simple construction, capable of realizing interlocking of a push-button switch having a pair of push buttons facing each other and being downwardly movable in multiple stages by being pressed, while sufficiently securing stroke in each stage of the push buttons. A switch body having a fixed contact is provided with two push buttons, having mobile contacts, facing each other and being downwardly movable in multiple stages. An interlocking member for mobile contact is swingably disposed, for preventing closing of the mobile contact of at least one push button due to touching of the mobile contact the two push buttons are pressed, on the switch body at a position lower than the push buttons, with approximately the mid-point of two push buttons.

Abstract: An activation device with a start button and an emergency stop button for an electric appliance such as a circuit breaker equipped with a start control device and a stop control device with alternating movements. Also included is a disengageable transmission device, preferably consisting of a toggle lever acted upon by a safety lever capable of detecting the position of the emergency stop button, is placed between the start button 14 and the start device specific to the circuit breaker. This arrangement prevents the circuit breaker from being started by forcing the start button even though the emergency stop button has been pressed and is locked in the stop position.

Abstract: An interlocking device for a push-button switch in compact size and with a mechanically simple construction, capable of achieving the interlocking of a push-button switch having a pair of push buttons facing each other and being downwardly movable by pressing in multiple stages, while sufficiently securing the stroke in each stage of the push buttons. The interlocking device is comprised of a first interlocking member and a second interlocking member. The first interlocking member being inserted, at both ends, in the two push buttons respectively, forming a projection at the bottom and being disposed on the switch body swingably and in a way to be movable up and down through a spindle. The second interlocking member being extended, at both ends, to a lower position of the two push buttons respectively, forming, at the top, a projection which comes in contact with the projection formed on the first interlocking member and being swingably provided on the switch body through a spindle.

Abstract: A rotary control device and an electronic apparatus in which it is used are disclosed. The control device includes a flat cylindrical switch plate for selectively exposing function switches to the outside of the electronic apparatus in accordance with rotation of the switch plate. A plurality of switches are disposed on the switch plate, for generating manipulating signals. The switches are disposed along the circumference of the switch plate, and are selectively exposed to the outside of the electronic apparatus. The user can rotate the switch plate clockwise or counterclockwise to selectively expose the intended switches for activation.

Abstract: Contact holders accommodated in defined regions are elastically returned to initial positions on the side of a wall. At the initial positions, stoppers are formed integral with a wall which defines the regions, in such a manner that the stoppers are in parallel with the wall and spaced a distance from the wall. Those stoppers are each in the form of a thin plate, and have protrusions which are extended towards the contact holders, respectively. Hence, when returning to the initial positions, the contact holders and strike against the protrusions of the stoppers, so that the latter are bent towards the wall while reducing the distance, thus decreasing the impact thereon when the contact holders strike against the stoppers.

Abstract: A switching assembly having an on switch with a separate off release actuator. The switching assembly has a switch which has both an on position and an off position. Connected on the switch is an on button which has both a released position and a depressed position. The moving of the on button into the depressed position causes the switch to toggle into the on position. Also connected to the switch is an actuator rod which provides for the locking and releasing of the switch from the on position. The actuator rod is connected to an off button which has both a depressed position and a released position. Moving the off button into the depressed position causes the switch to toggle into the off position. Furthermore, a spring is connected to the actuator rod for maintaining the on switch in the on position until the actuator is forced to release the on switch from the on position.

Abstract: A push button switch provided with a multistage actuation interlock function is composed of a casing; a pair of push buttons arranged side by side passing through an upper lid of the casing; a plurality of movable bodies arranged movably in a direction perpendicular to a depression direction of the push buttons into the casing; a plurality of movable contacts attached to the movable bodies, respectively; and a plurality of fixed contacts arranged on a base portion of the casing in confronting positional relationship with respect to the movable contacts. When each of the push buttons is depressed at each of the multistage stroke, the movable body is shifted to bring the movable contact into contact with the fixed contact, respectively in sequence. Further, an interlock plate is interposed between and associated with the two push buttons in the casing.

Abstract: A push wheel switch including a housing, a toothed wheel rotatably disposed in the housing and two push buttons for controlling the rotation of the toothed wheel. The push buttons are depressed to rotate the toothed wheel so as to changedly show numerals on a numeral face of the toothed wheel. In the case that the toothed wheel is located and prevented from rotating by locating block, when the push button is again depressed, the push button will slip off without driving the toothed wheel.

Abstract: A pair of pushbuttons on opposite sides of a release pushbutton are individually depressible to operate a respective set of normally open contacts to a closed position. A rotatably mounted latch is spring biased against a medial surface of one of the pair of pushbuttons to engage a latch surface upon depression sufficient to close the contacts. The release pushbutton overlies a lever arm of the latch and depression of the release pushbutton rotates the latch free of the latch surface to release the depressed pushbutton. A solid bar interlock is pivotally mounted on the release pushbutton, and opposite ends of the interlock extend into the paths of the pair of pushbuttons. Latched depression of one outer pushbutton draws the release pushbutton down close to the latch lever arm, whereupon little movement of the other outer pushbutton is required to operate the latch to a release condition. Simultaneous depression of both outer pushbuttons is blocked by a limit stop prior to closure of either contact set.

Abstract: A seesaw type switch including a switch housing, a first lever pivotably connected to the switch housing about an axis, and a second lever pivotably connected to the switch housing about the axis. The first lever is pivoted independent of the second lever to press a movable contact against a fixed contact, and similarly the second lever is pivoted independent of the first lever to press a movable contact against a fixed contact. Also disclosed is a switch apparatus incorporating three seesaw type switches and includes a pair of interlocking members which are used to actuate two of the switches simultaneously.

Abstract: A switch unit has at least a pair of switches and a pair of push buttons arranged corresponding to the pair of switches. A lock member is arranged between the pair of the push buttons to engagingly lock the movement of one of the push buttons at the time of an operation of the other of the push buttons, whereby an unexpected concurrent operations of the adjoining push buttons may be effectively prevented.

Abstract: Disclosed is a double button device on a VCR comprising a front panel where a double button being set, a cover door being hinged at an inner front panel and opened selectively whenever necessary, an outer button set outward on a cover door, a tact switch for sending an electrical signal to a printed circuit board by an inner or an outer button being pressed, an inner button set on an inner front panel to connect a tact switch with an outer button of frequent use, and a mode switch for changing the mode of a tact switch when a cover door is opened or closed.

Abstract: The switch includes a case, first and second manipulation members, two switching mechanisms, cam projections two locking members, guide grooves, and an operating member. The guide grooves for guiding the locking members are arranged so that tip ends of the locking members can be put in contact with the operation member for forcibly returning the manipulation members from a pressed-in position to a released position and that the tip ends are prevented from facing the operation member when the tip ends are located in a normal paths of the guide grooves, thereby preventing deformation of locking members and damages of the cam projections due to an erroneous pressing operation.

Abstract: A plurality of switches are arranged in a polygon on a printed circuit board and each of the switches is beneath or under a switch activating portion formed at the center of a pushbutton operation receiver portion. The pushbutton operation receiver portions are each supported over the corresponding switches through resilient arms that are integrally formed with a stay, which is secured to the printed circuit board at the center of the polygon. The pushbutton has a plurality of pushbutton operation transmission portions, each of which conveys the pressing force to the facing ends of the adjacent pushbutton operation receiver portions. When the pushbutton is depressed at a point between two switches, the pushbutton operation transmission portion nearest the depression point is lowered, pushing down the facing ends of the adjacent pushbutton operation receiver portions.

Abstract: A switching mechanism is provided including a control member and a switching element which is coupled to the control member and by means of a coupling element can be moved between a first and a second position. The switching mechanism includes two coupling elements which are arranged in series in the switching direction, each coupling element being constituted by a hinging V-shaped member, a point of intersection of a V-shaped member being alternately located within range for action thereon by the control member.

Abstract: A push button switch having an interlocking device, the switch having a pair of two spaced adjacent push buttons each movable downwardly from an inoperative to an operative position, a pin position between the two push buttons and having a horizontal longitudinal axis extending transversely to a vertical plane between the push buttons and around which the pin is rotatable, and an interlocking lever extending between the push buttons and having opposite ends engaged with respective ones of the push buttons for tilting the lever when the push buttons are moved, the interlocking lever having a fulcrum projecting downwardly from the central portion thereof and, when both the push buttons are in the inoperative position, having the lower end supported on the rotatable pin, and movable for, when one of the push buttons is moved downwardly, being tilted toward the downwardly moved push button and having the fulcrum moved around the pin to a position on the opposite side of the pin from the downwardly moved push butt

Abstract: A switch includes two casings engaged together. Four shafts are extendible through the upper casing. Four pairs of ribs are formed in the lower casing. A contact arm is received in the lower casing. Three conductors are provided in the lower casing. A retaining plate and a control plate are slidably provided between the protrusions and the ribs. Each conductor is caused to contact the contact arm when the shaft is depressed downward. Two or more shafts are prevented from being fully depressed by the control plate. A projection of each shaft slides between the ribs so that the shaft will not be distorted when two or more shafts are depressed simultaneously.

Abstract: Seven or some other number of individually operable push buttons are provided to carry out control functions of an automotive heating, ventilating and air conditioning system. The push buttoms are movable between extended and depressed positions and are biased toward their extended positions by individual return springs. A latching mechanism is provided for latching any selected push button in its depressed position while unlatching the other push buttons. An array of slidable lockout blocks prevents simultaneous depression of more than one push button, by providing only enough clearance space in the array to accept one lockout penetrating member on one push button at a time. The array is lightly spring biased to prevent rattling of the lockout blocks. Two biasing springs are compressed between the endmost pairs of lockout blocks at the opposite ends of the array.

Abstract: Several individually operable push buttons are provided to initiate an OFF function, defrost, air conditioning and various air directions and other functions of an automotive heating, ventilating and air conditioning system. Each push button has a carriage adapted to be fitted on one side with an optional leaf spring contactor engageable with fixed contact members. The opposite side of the carriage is fixedly fitted with a compressible silicone rubber or other resilient valve member in sealing engagement with a port plate to carry out vacuum valving functions. Each carriage is guided by a tongue-and-slot guiding arrangement, whereby sealing pressure is applied between the valve member and the port plate. Each carriage has a rearwardly projecting tongue, slidably received in a slot formed in flange structure on the port plate. The front portion of each push button is also slidably guided to maintain the sealing pressure.

Abstract: A switching device is disclosed in which a depression switch and a rotation/depression switch are interconnected by means of a coupling mechanism. When one of the knobs is turned ON, the remaining knob is automatically turned OFF. The switching device includes a depression knob projecting from a plate and disposed depressingly manipulatable; the depression switch for performing a predetermined switching operation in response to depressing operation of the depression knob; a rotation/depression knob provided on the plate and disposed rotatable and depressingly operable; the rotation/depression switch for performing a predetermined switching operation in cooperation with rotation or depressing movement of the rotation/depression knob; and, a coupling mechanism provided between the depression switch and the rotation/depression switch. The coupling mechanism releases a contact of one of the switches in response to ON operation of remaining one of the switch.

Abstract: A switch assembly for use, as example, for a wiper switch or an illumination switch of an automobile includes a plurality of switch units each having a control lever. The control lever of one of the switch units has a function of turning on the corresponding switch unit and, additionally, returning the control levers or contact holders of the switch units disposed at ON positions to OFF positions. The switch assembly eliminates the need for the provision of a special return lever or release lever for only returning the control levers or the contact holders from the ON positions to the OFF positions. Accordingly, this construction reduces the number of control levers, which makes the switch assembly small.

Abstract: A switch with three movable contact holders, correspondingly manipulatable operating members, and return members movable perpendicular to the contact holders, contact holders having projections for engaging with the surface of V-shaped notches in the return members which prevent simultaneous operation of more than one contact holder, and cause a contact holder to be restored to neutral position upon operation of another contact holder to a neutral position.

Abstract: A push-button switch having an individual and interlocking action is provided which includes two operating members. The push-button switch comprises first and second sliders, each having a heart-shaped cam groove formed thereon. Actuator pins are provided for engagement with the cam grooves to provide the desired individual and interlocking action. The interlocking action is effectuated when the first slider is depressed while the second slider is locked at its depressed position. The invention allows the second slider to return to its unlocked nondepressed position while the first slider then becomes locked in its depressed position. The push-button switch has high versatility since the distance between the sliders can be easily changed. Further, common parts can be used individually for the sliders thus improving manufacturing efficiency.

Abstract: The invention relates to a magnetic tape apparatus having at least two push buttons (31, 32) which, when their push-button bars (33, 34) are pressed in separately, exercise individual functions on apparatus parts, with it being possible for each of the push-button bars (33, 34), loaded in tension by means of springs (50, 51) in the direction of their initial neutral positions, to be arrested in the pressed-in position, and with it being possible for a spring-loaded blocking member (20) which can be moved by all push-button bars (33, 34) and which interacts with latches on the push-button bars (33, 34) to be adjusted in such a way that, when a push-button bar is pressed in, a push-button bar arrested beforehand is released for withdrawal. In addition, the individual latches (52, 53) of at least two push-button bars (33, 34) with the parts of the blocking member (20) which are allocated to the individual latches (52, 53) have latching arrangements of different design.

Abstract: A push button switch with a simultaneous locking preventing function which can attain its miniaturization while realizing a sure single action. The switch includes a core mounted for sliding movement in each of a pair of sliders mounted for up and down movement in a casing. A heart-shaped cam groove having a plurality of regions of varying height is formed either on an end face of each core or with the locking region of the cam groove formed on an end face of each core and with the remaining regions formed on a contiguous wall face of the corresponding slider. An actuator pin is provided for each slider and traces the cam groove to lock the slider at its depressed position when the slider is depressed. When the sliders are depressed simultaneously, a simultaneous locking preventing member prevents the sliders from being locked at the depressed positions.

Abstract: A plurality of switch elements are disposed within a casing made of synthetic resin. Each of the switch elements is changeable between a normally-open state and a closed state. A plurality of movable stems are made of synthetic resin. At least parts of the stems extend in the casing and engage the respective switch element. The switch elements are changed between the open and closed states in accordance with movements of the stems respectively. The switch elements can be locked in the closed states. Any one of the switch elements can be unlocked and moved from the closed state when another switch element is changed from the open state to the closed state. At least two of the switch elements are prevented from being simultaneously locked in the closed positions. A mechanism allowing the locking process and unlocking process includes a plate made of synthetic resin and extending within the casing.

Abstract: An inter-locked button actuated matrix switch system for automotive instrumentation with button cluster switching, in which the switches form a 2.times.2 matrix switch circuit free of diode feedback protection in its input lines, the button structures being rocker mounted preventing the concurrent actuation of their associated switches. One button structure integrally includes two, closely spaced button elements having the look and feel of two independent buttons, with the other button structure having a relatively wide, single, continuous button actuation surface, the three "buttons" being located in line forming a button cluster for the automobile's information center.

Abstract: A push-push type alternate action latching switch having low displacement and providing tactile feedback. The switch includes a push button actuator (80), a contact carrier (40) which is caused to rotate creating motion in a direction perpendicular to the direction of the push button, and a cycler (60) for effecting the desired motion are disclosed. The tactile feel is provided by displacing a terminal (34) over an extending detent rib (26) as it changes between switch positions. Low displacement is created by the translation of the in-out motion to the left-right motion to obtain the desired switching effect. A pair of interlocked push-push type alternate action latching switches is also disclosed.

Abstract: A multiple location system is provided for controlling application of alternating-current power to a load. The system employs a dimming system in combination with one or more switches. In one embodiment, the system includes an override, so that a switch can provide power to the load even after the dimmer has turned the power off. In another embodiment, the dimming system includes an actuator, and the value of power to the load is determined substantially immediately upon setting of the actuator.

Abstract: A multiple pushbutton switch comprising a lower insulative housing; a cover member mounted over the housing to form an accommodating space; a plurality of equally spaced selecting contact plates retained by the housing; a plurality of equally spaced J-shaped contacting springs accommodated by the housing and a second arm of each contacting spring is in alignment with the selecting contact plate; an L-shaped contact plate positioned in the housing with a first plate contacted with the first arms of each J-shaped contacting springs; a plurality of pushbuttons positioned within the housing to cause the closing and/or opening of one or more pair of contacts when any of the pushbuttons are depressed in their downward positions and an interlock engaging mechanism movably fixed within the accommodating space is capable of latching the depressed pushbutton in a downward position and prevent the simultaneous depression of more than one pushbutton.

Abstract: A slide for an interlocking switch device which can reduce the thickness and simplify the structure thereof by reducing the thickness of material of components without changing the height. The slide has an interlocking cam operating portion and a simultaneous locking inhibiting member controlling portion formed in a spaced relationship by a fixed distance from each other on a wall face of the slide. In a plural switch unit array, only one switch is operable at a time.

Abstract: A mechanical interlock is provided for a vacuum contactor assembly to insure that the second contactor cannot close after the first contactor closes. The interlock includes a support bracket, a cover plate and an interlock block which was first and second openings and is positioned between the support bracket and the cover plate. First and second ball bearings are positioned in the openings. The cover plate and interlock block are connected to the support bracket. First and second slide members each have an operating arm and a blocking arm with appropriate openings for cooperating with the ball bearings and interlock block openings. The operating arm of one slide is paired with the blocking arm of the other slide so when one operating arm moves the ball bearing it blocks the other slide from moving thereby preventing one of the vacuum contactors from operating.

Abstract: A switching device equipped with a plurality of operating elements has one of the operating elements installed in the switching device pressed in a direction different from the direction in which the other elements are pressed and a single lock plate provided with a counter part formed on each operating element to hold the operating element in the depressed state and releasing its hold based on the operation of pressing the operating element. The lock plate allows depression of only one operating element a time.

Abstract: A motor protection electric switch, and the like, in which contacts are opened and closed by means of a switch latch equipped with an "on" button and an "off" button, with the different positions of the "on" button indicating the switching state of the contacts. A two-armed blocking lever is rotatably mounted on a latch housing of the switch, and disposed between the contact member carrier and the "on" button. One arm of the lever is latched with the "on" button while the other arm thereof is supported at the contact member carrier as long as the contacts are not opened sufficiently far to open a circuit through the contacts of the switch.

Abstract: A series of manually depressible pushbuttons establish all of the operating functions for an automotive air control system. Latching and block-out mechanisms are provided to latch only one pushbutton at a time in the depressed position. The pushbuttons operate the first arms of spring-biased levers having second arms for selectively moving particular selector plates of a stacked set. The selector plates are adapted to operate single function control devices, including both vacuum valves and electrical switches having movable control members with knobs thereon projecting through large size and small size openings in the selector plates. The second arms of the levers extend through large size and small size slots in the selector plates. The small size slots and openings afford operating connections, while the large size slots and openings merely provide for idling movement.

Abstract: Simultaneous actuation of switches belonging to separate columns in a switch matrix is prevented by means of opposed preventing members which slide strokes of predetermined length in opposed directions. The preventing members having competing sections formed on opposite sides of a gap which is less than twice the length of the predetermined stroke and these sections compete for space in the gap when their respective preventing members slide so that only one preventing member can slide the full length of its stroke at a time.

Abstract: A mechanism for inhibiting simultaneous locking of switches in a plurality of rows in a multi-row switch device has a member for inhibiting simultaneous locking of switches in two rows. The member has a plurality of receiving portions projectingly formed in a spaced relationship by a fixed distance and an alternate relationship on both edges thereof and located corresponding to the keys in the two rows. When one of the switches in one row is operated, the member is moved to a position in which the receiving portions thereof will inhibit the corresponding keys in the other row from being depressed. The switch device also includes bar-like locking cams extending between every two adjacent switches in each row for preventing simultaneous locking of two switches in the same row.

Abstract: Four different versions of multi-position selector switches can be assembled from a kit of parts by selecting various combinations of the parts and assembling them into a housing consisting of an insulating case and cover. Inventory of parts is reduced by mutual use of some parts in two or more versions. The possible selector switch versions are a three position selector switch having three momentary pushbuttons for selectively closing two normally open contacts and opening a normally closed contact a two-position slector switch having two momentary pushbuttons for selectably closing a normally open contact or opening a normally closed contact, a three-position selector switch having three maintainable pushbuttons for selectively closing two normally open contacts and opening the same, and a three-position selector switch having three pushbuttons including a momentary pushbutton and two maintainable pushbuttons for selectively closing two normally open contacts and for opening the maintained contact.

Abstract: A switch device comprises a dual push-push type switch device wherein each switch includes a cam protrusion that engages a downwardly inclined end portion of a lock pin when the switch is in a release position so that in the event of the depression of both switches simultaneously the top end portion of each of the lock pins slides over the cam protrusion of a respective operating piece.

Abstract: A multiple location system is provided for controlling application of alternating-current power to a load. The system employs a triac as a power carrying device, the gate control circuit for which has been modified to include auxiliary switching. Potentiometers are disposed at various different locations for determining, responsively to the setting or positioning of an actuator, such as the slide control of a linear potentiometer, the magnitude of respective control signals substantially immediately upon setting of the actuator. The signals are mutually exclusively applied to control the triac in accordance with which of the actuators is being set. Alternatively, the control signals can be applied in accordance with which one of a series of take-command switches (one for each location) was last operated. In either case, only two wires are necessary to connect the different locations to one another. In one embodiment, the actuator controls a pair of momentary-close switches associated therewith (e.g.

Abstract: A switch assembly has two rows of pushbutton switches and a rocking plate in between the two rows having projections engaging the switches for preventing the switches of one row from being depressed when any switch in the opposing row is depressed. The rocking plate is pivotably mounted on a shaft such that it can be axially displaced to release the projections from the switches and allow switches from either row to be actuated simultaneously.

Abstract: Control knob for temperature control switch is provided with means for heating or/and cooling the same, whereby, by feeling of the temperature of the control knob with a finger tip, it is possible to instantaneously identify what the function of the control knob which the finger has toughed is, without turning the sight to a switch, and, even when the shapes and way of disposition of control knobs are identical with one another.

Abstract: A cassette tape player is combined with a radio receiver and has a plurality of player control buttons used for selecting the operation mode of the tape playing mechanism and, a radio control button used for operating the radio signal receiving device, and a stop button used for stopping either the tape playing mechanism or the radio signal receiving device, wherein one of the player control buttons or radio control button can be switched and the operating condition either one of the tape playing mechanism or the radio signal receiving device can to be released by manipulating the stop button.

Abstract: A stand-alone keyphone system that is designed to be installed at any location where it is desired that a plurality of telephone lines be available to each of many user points. The system operates independently of all other systems and without the need for a KSU or a central control unit. Each system allows a plurality of telephone lines to be connected and operated simultaneously and a plurality of systems may be connected within each installation with minimal loading of telephone lines. The system comprises, within a single housing, a DTMF telephone set and a key adapter set that further comprises all the mechanical and electronic circuits to operate the system including a switching subsystem and hold circuit subsystem. The system incorporates a hold pushbutton for placing any of the telephone lines on hold, a set of four telephone line accessing pushbuttons; and a set of line status LED's that indicate if the corresponding line is idle, ringing, busy or holding.

Abstract: A push button switch assembly comprising a plurality of push button switch actuators includes a flexible, unstretchable electrically non-conductive belt for permitting only one of the push button switch actuators at a time to be in its activated position while the remaining switch actuators are all in their deactivated position. The switch assembly cover includes a molded detent spring for maintaining a switch actuator with a shaft having suitably axially spaced detents in its activated position when one of the detents engages the spring. The switch actuator comprises movable contacts aligned to engage respective stationary contacts disposed in the base of the switch assembly when the switch actuator is in its activated position. The belt is strung over tensioning risers disposed in a predetermined path on the base of the switch assembly at each side of a switch actuator. The switch actuator shaft further includes a groove for confining the belt therein.

Abstract: A switching device comprises a movable member which makes the first switch turn to an opposite phase at the first thrust-in position and makes the second switch turn to an opposite phase at the second thrust-in position, a first locking means which locks the movable member at the first thrust-in position, a second locking means comprising a torsion coil spring engaging member and a heart type cam recess on which the engaging member slides, which locks the movable member at the second thrust-in position, and a reset member which releases the movable member from the locking state. The first and second switches are selectable to set and can be alternatively operated only by repeated thrust-operation.

Abstract: The invention relates to a magnetic tape apparatus having at least two push buttons (31, 32) which, when their push-button bars (33, 34) are pressed in separately, exercise individual functions on apparatus parts, with it being possible for each of the push-button bars (33, 34), loaded in tension by means of springs (50, 51) in the direction of their initial neutral positions, to be arrested in the pressed-in position, and with it being possible for a spring-loaded blocking member (20) which can be moved by all push-button bars (33, 34) and which interacts with latches on the push-button bars (33, 34) to be adjusted in such a way that, when a push-button bar is pressed in, a push-button bar arrested beforehand is released for withdrawal. In addition, the individual latches (52, 53) of at least two push-button bars (33, 34) with the parts of the blocking member (20) which are allocated to the individual latches (52, 53) have latching arrangements of different design.