Abstract: A circuit breaker, in particular of a power breaker, having a busbar which is mounted so as to be movable between a closed position and an open position. The busbar, a trip device and a hand lever are coupled by means of the mechanism in such a way that, when the hand lever is moved from the first position into the second position, the busbar is moved from the open position into the closed position. Upon tripping of the trip device, the busbar is moved from the closed position into the open position, and the hand lever is moved from the second position into the first position if it is not blocked. When the hand lever is moved from the second position into the first position, the busbar is moved from the closed position into the open position regardless of whether the busbar is blocked in the closed position.

Abstract: In a rocker arm of an electric switch, the electric switch is actuated by the rocker arm for setting definable positions. The rocker arm of an embodiment includes a first part, for setting the definable positions, and a second part, movable between a first position and a second position. In the first position of the second part, the first part can be moved into the definable positions; and in the second position of the second part, the movement of the first part is blocked.

Abstract: A combination lock is provided, the lock having a latch movably mounted to a housing of the lock for movement between a locked position and an unlocked position; and a bolt movably mounted to the housing of the lock for movement between a first position and a second position, wherein the combination lock is a key-controlled combination changing permutation lock wherein a button disposed away from a rear exterior surface of the housing in a first direction rearwardly away from the rear exterior surface is depressed in order to change the combination of the combination lock and the housing has a button protection feature extending rearwardly away from the rear exterior surface of the housing in the first direction proximate to the button and the button protection feature extends farther away from the rear exterior surface of the housing in the first direction than the button.

Abstract: A toggle switch comprises a housing, a plurality of switches disposed within the housing, an actuating lever coupled to a pivot pin, and an actuator assembly coupled to the actuating lever. The actuating lever extends into the housing. The actuator assembly comprises an actuation pin coupled to the actuating lever, and a spring disposed about the actuating lever. The actuation pin is configured to actuate one or more of the plurality of switches, and the spring is configured to bias a cam follower into engagement with a cam profile on a bracket and bias the actuating lever into an actuation position.

Abstract: A lock for the hook of a roll-off container box comprises a rail member with two substantially parallel brackets, each bracket having a plurality of apertures for receiving at least one padlock, said brackets terminating at one end in a carrying handle and at the opposite end with a connector pin for engaging with the container box hook. The lock further comprises a box-like outer cover for the rail member, that outer cover having a front wall, a rear wall, a top surface and spaced apart sidewalls. Each sidewall has a track that commences at its bottom edge, and extends parallel to that bottom edge before branching off into an upper and lower pathway for the rail member's connector pin to slide along.

Abstract: The present invention relates to a molded case circuit breaker, in which a locking member is formed at an inner side of a lever and an anti-rotation member is formed at an upper like. Accordingly, the locking member can be brought into contact with the anti-rotation member even though a handle is rotated to an OFF position even in a fused state between a fixed contactor and a movable contactor, thereby preventing a rotation of the handle to the OFF position.

Abstract: A switch device with an erroneous operation preventer, including: a switch main body having a switch member supported by a shaft with respect to a casing and configured such that pushing a first end portion of the switch member causes a second end portion thereof to protrude and such that an on state and an off state of the switch main body are changed by pushing one of the first and second end portions; and a frame-shaped erroneous operation preventer disposed around the switch member for preventing an erroneous operation on the first end portion that takes a protruding posture when the switch main body is in one of the on and off states, the preventer having side protective walls extending in a longitudinal direction of the switch member so as to cover a surface of a flange portion of the casing on both sides of the first end portion.

Abstract: A firearm accessory that includes a body that is demountably attached to a firearm, the body containing: a camera; a microphone; a memory chip; a micro-controller operable to record a user's firearm activity into the memory chip as captured by the camera and the microphone; and, a trigger-switch mechanism demountably attached to a firearm-handle operable by a user's finger to turn the contents of the body on but not off. The body disposed on a firearm further includes a plurality of electronic components operable to: record audio, video, location, time, and date, at the time of usage of a firearm; and transmit the recorded a record audio, video, location, time, and date, outside of the body through a wire, a portable memory card, or wirelessly in realtime.

Abstract: A blocking element is disclosed for blocking the movement of a handle or a switching lever of an electrical switch. In at least one embodiment, the blocking element is switchable between at least two positions. In the first position, the blocking element can block the movement of the handle or of the switching lever and, in the second position, the blocking element cannot block the movement of the handle or of the switching lever.

Abstract: An light switch cover plate constructed of a durable and ruggedized break-resistant material that securely covers the light switch switching mechanism and includes, uniquely keyed mounting members, and a uniquely keyed switching implement operably connected to a switching lever to effect switching on and off the light switch switching mechanism.

Abstract: A circuit breaker having a mechanical trip mechanism enabling a circuit breaker to perform an emergency manual trip operation is provided. The circuit breaker includes: a fixed contactor connected to a circuit; a movable contactor movable to a closed state in which the movable contactor is in contact with the fixed contactor and a broken state in which the movable contactor is separated from the fixed contactor, an opening and closing mechanism configured to convert a rotational motion of a plurality of links and a rotational shaft to enable the movable contactor to be brought into contact with the fixed contactor or separated therefrom; a trip latch locked to or unlocked from a main link provided in the opening and closing mechanism; and an OFF button configured to rotate the trip latch to unlock the trip latch from the main link when manually pressed.

Abstract: A battery-powered portable tool, such as a chainsaw, hedge trimmer or handheld drill, comprising: a housing (1), a driven element (2) supported by the housing (1), an electric motor (6) coupled to the driven element (2) so as to drive the driven element (2), a battery (5) electrically coupled to the motor (6) so as to supply electric current to the motor (6) and a control circuit (8) arranged to control the supply of electric current to the motor (6) from the battery (5), in which the control circuit (8) comprises a main switch (8) operable by a user and an auxiliary switch (10, 11) also operable by a user; in which the control circuit (8) has: an active state in which operation of the main switch (8) by the user allows electric current to flow to the motor (6) so as to cause the driven element (2) to be driven; and an inactive state in which operation of the main switch (8) does not allow electric current to flow to the motor (6) and so the motor (6) does not drive the driven element (2); in which operation

Abstract: In a device for controlling an operation of an anti-collision switch, the anti-collision switch is provided in a support close to a guide frame that is provided at at least one of both lateral sides of a table frame, to prevent collision of the table frame that is supported on the table support to be capable of moving in a lengthwise direction. The device includes a first lever coupled to the table support so that at least a portion of the first lever moves in a vertical direction according to deformation of the guide frame, and a second lever pressing the anti-collision switch in a normal state and, when a vertical movement of the first lever deviates from a preset height, being moved up by the first lever to remove pressing of the anti-collision switch and operate the anti-collision switch.

Abstract: A saw assembly includes a housing, a drive member, a motor, a switch, a trigger, a lockout lever, a stop structure, and a lock-on member. The housing defines an interior space, and has a forward housing portion defining a forward housing opening and a rearward housing portion defining a rearward housing opening. The drive member extends through the forward housing opening, and is configured to be moved in a repeating pattern. The motor is positioned in the interior space and is configured to move the drive member in the repeating pattern. The switch is positioned in the interior space and has an actuator movable between an actuated and a deactuated position. When the switch is in the actuated position, the motor moves the drive member in the repeating pattern, and when the switch is in the deactuated position, the motor does not move the drive member in the repeating pattern.

Abstract: A circuit breaker includes a latching mechanism including a switching mechanism operatively connected to a tensioning element, and an unlatching mechanism by which, in response to a tripping signal, the tensioning element can be transferred from a tensioned state into an at least substantially relaxed state. The tensioning element is indirectly coupled to a tension lever which can be locked or tripped as a function of a position of a blocking pawl of the unlatching mechanism and which includes a blocking mechanism by which, in an OFF position of the latching mechanism in which the switch is open and the tensioning element is tensioned, tripping of the tension lever is prevented despite a tripping signal. The blocking mechanism of the tension lever includes a rocker arm which is fastened movably on the tension lever.

Abstract: A circuit breaker having a mechanical trip mechanism enabling a circuit breaker to perform an emergency manual trip operation is provided. The circuit breaker includes: a fixed contactor connected to a circuit; a movable contactor movable to a closed state in which the movable contactor is in contact with the fixed contactor and a broken state in which the movable contactor is separated from the fixed contactor, an opening and closing mechanism configured to convert a rotational motion of a plurality of links and a rotational shaft to enable the movable contactor to be brought into contact with the fixed contactor or separated therefrom; a trip latch locked to or unlocked from a main link provided in the opening and closing mechanism; and an OFF button configured to rotate the trip latch to unlock the trip latch from the main link when manually pressed.

Abstract: An light switch cover plate constructed of a durable and ruggedized break-resistant material that securely covers the light switch switching mechanism and includes, uniquely keyed mounting members, and a uniquely keyed switching implement operably connected to a switching lever to effect switching on and off the light switch switching mechanism.

Abstract: The invention relates to a manual drive for a tap changer for a tap-changing transformer having a locking unit. The locking unit has a catch which can pivot and has different locking means; the catch can be operated from the outside before an intended switching operation. The locking unit offers high a degree as possible of safety against inadvertent or else deliberate incorrect operations of the manual drive.

Abstract: A locking apparatus for a manual actuation device of a switchboard plant has a trigger mechanism that is activated by an absence of a backup or a defective backup, and a locking mechanism for the manual actuation device. The locking mechanism is coupled to the trigger mechanism and is transferable by the trigger mechanism from a first position releasing the manual actuation device into a second position locking the manual actuation device. The locking apparatus has a simple and cost-effective construction, it is proposed that the locking mechanism has a cover plate which is displaceable between two positions by the trigger mechanism and which, in its first position, blocks a lever configuration under tensile force, of the locking mechanism and, in its second position, releases the lever configuration in order to lock the manual actuation device.

Abstract: A safety start switch for a pneumatic tool including a main body, a compression strip, a push knob, a coupling element, a spring, and a pivot pin. After a corresponding arrangement of the above-mentioned components, the compression strip is not compressible in the ordinary state since the coupling element rests on the blocking portion of the main body. Meanwhile, the compression strip is downwardly swiveled to move the piston in the same direction responsive to the removal of the coupling element from the blocking position of the coupling element when the push knob is shifted against the resilience of the spring.

Abstract: Maintained contact push-button, particularly an emergency stop button, provided with a padlocking accessory. The button has a barrel and a movable head. The accessory has a sleeve fixed with respect to the barrel and having an inner shape matching the upper part of the barrel, and a movable ring. The ring has at least one aperture for the passage of padlocks on its upper edge, and is mounted on the outside of the sleeve so that it can move between a lower inactive position and an upper active position, by a movement which is limited by means of stop elements, in such a way that the head is left free in the lower position and the upper edge of the ring rises above the head in the upper position.

Abstract: A safety device includes a trigger for activating a first switch and a brake device for braking the output shaft of the electric tool. The trigger is controlled by a safety button that pivots a pivotal member that is engaged with a rotatable member when an intermediate member of the brake device is shifted by operating the brake device. The rotatable member matched with the pivotal member is rotated to activate a second switch. The electric power is provided to the output shaft when both the first and second switches are activated.

Abstract: A power tool includes a hollow housing defining a handle with an external wall. A motor is disposed in the housing. A switch is pivotally mounted in the handle about a first axis for actuating the motor. The switch has a first locking abutment. A latch is located adjacent the switch and is pivotally mounted in the handle about a second axis generally parallel to the first axis for movement back and forth between an engaged and a disengaged position. The latch has a second abutment for engaging the first abutment and preventing the switch from being actuated. The latch when pivoted to engage the first and second abutments applies a force vector generally intersecting the second axis.

Abstract: A successive switch device of a slot cutting machine includes opposite first push button and second push button mounted on the handle, and a positioning block secured on secured on the press switch. The first push button and the second push button may be locked with the positioning block, so that the press switch may be positioned after being pressed. Thus, the slot cutting machine may be operated successively. In addition, the slot cutting machine is available for the right-handed and left-handed users.

Abstract: A power tool includes a hollow housing defining a handle with an external wall. A motor is disposed in the housing. A switch is pivotally mounted in the handle about a first axis for actuating the motor. The switch has a first locking abutment. A latch is located adjacent the switch and is pivotally mounted in the handle about a second axis generally parallel to the first axis for movement back and forth between an engaged and a disengaged position. The latch has a second abutment for engaging the first abutment and preventing the switch from being actuated. The latch when pivoted to engage the first and second abutments applies a force vector generally intersecting the second axis.

Abstract: A manual operator assembly is provided for an interlock assembly. The interlock assembly includes a motor assembly that is locked in one of two positions by a brake assembly. The brake assembly is electronically controlled, but also includes a brake release pedal. The manual operator assembly includes a lever which is coupled to a shaft which is further coupled to a cam. When the lever is rotated, the cam engages the brake release pedal so that the interlock assembly may be operated manually.

Abstract: A disconnector shall be provided which along with a high degree of reliability and little structural effort enables two electric conductors to be separated from each other. To this end, a disconnector is proposed, comprising a housing (10), first and second conductors (14, 16) which extend into the housing (10) and abut against each other at a contact point (18, 20), and an adjusting element (12) adjustable between a starting position and a separating position relative to the first and second conductors (14, 16) and provided with a separating element (22) which when in its separating position separates the first and second conductors (14, 16) from each other.

Abstract: An apparatus for electrically operating a circuit breaker arranged such that the change-over lever movable between an electrical operation mode position and a manual operation mode position has provided therewith a blocking portion which, while allowing the operation of the manual operation handle when the change-over lever is in the manual operation mode position, engages the manual operation handle to prevent the operation of the manual operation handle when the change-over lever is at the electrical operation mode position. Therefore, the operation of the manual operation handle in the electrical operation mode can be ensured to be prevented, avoiding the damages to the electrical operating apparatus, thsu enabling to provide a highly reliable apparatus for electrically operating a circuit breaker.

Abstract: A motor operator mechanism is disclosed for moving a breaker handle of a circuit breaker between off and on positions. The motor operator mechanism comprises of a first pin biased to engage the breaker handle in a direction to close the circuit breaker, a pin latch configured to releasably engage the first pin when the breaker handle is in a position intermediate to the off and on positions, wherein releasing the pin latch allows the first pin to move the breaker handle to the on position.

Abstract: A power tool includes a hollow housing defining a handle with an external wall. A motor is disposed in the housing. A switch is pivotally mounted in the handle about a first axis for actuating the motor. The switch has a first locking abutment. A latch is located adjacent the switch and is pivotally mounted in the handle about a second axis generally parallel to the first axis for movement back and forth between an engaged and a disengaged position. The latch has a second abutment for engaging the first abutment and preventing the switch from being actuated. The latch when pivoted to engage the first and second abutments applies a force vector generally intersecting the second axis.

Abstract: A process for upgrading a hydrocarbon oil is provided which comprises introducing the oil and an aromatic extraction solvent containing 0.1 to 10 vol % water into an extraction zone for contact of the oil and solvent therein whereby an extract solution is formed; and injecting water into the extraction zone at a point below that at which the extraction solvent is introduced. The injected water is injected substantially countercurrent to the extraction solvent at a velocity of about 0.5 to 3 ft/sec in an amount ranging from about 0.1 to about 10 LV% based on the amount of extract solution being processed.

Abstract: An electric power blower (1) includes a handle (5) mounting therein a disk-shaped speed change dial (9) which is capable of rotation on a shaft (10). The speed change dial (9) is disposed between a speed change switch (6) and a trigger switch (8) and has a cut-out (12) formed therein through which the trigger switch (8) can pass without interference, depending on the rotational position of the dial (9). The speed change dial (9) includes a stopper (13) at an free end which defines the cut-out (12). A first regulating surface (14) and a second regulating surface (15) are provided on the stopper (13), forming an angled corner therebetween. The peripheral surface of the speed change dial (9) is exposed to the outside of the blower (1) through two windows (18) in both sides of the handle (5) adjacent to the trigger switch (8) so as to allow manual rotation. The amount by which the trigger switch (8) is pulled into the handle is determined by the rotational position of the speed change dial (9).

Abstract: A circuit breaker terminal shield with integral securing and installation and removal features apparatus, means and system for use with a circuit breaker assembly having at least one circuit breaker terminal, at least one fastening aperture associated with a circuit breaker projecting end member and another circuit breaker projecting end member, the circuit breaker terminal shield apparatus having at least one terminal shield main frame member having a first terminal shield fastening member adapted to fasten the terminal shield main frame member to the circuit breaker projecting end member of the circuit breaker assembly, and further having a second terminal shield fastening member adapted to further fasten the terminal shield main frame member to the another circuit breaker projecting member of the circuit breaker assembly.

Abstract: A safety residential lever arm switch which can only be thrown when the lever arm is first depressed. In an electrical switch of the type having a front housing having a central frontal opening, a lever arm positioned within the front housing and projecting through the frontal opening, and a rear housing having a front side portion adapted to mate with the front housing, a safety feature comprising: structure requiring an outward end portion of the lever arm to be pushed inwardly before it can be pivoted so that a user may, with a single hand, first depress the lever arm, and then pivot the lever arm between on and off position. A button end portion of a shaft extending from an outward end portion of the lever arm is first depressed. Alternatively, the lever arm in its entirety is depressed inwardly so that the switch can then be thrown.

Abstract: A power tool includes a hollow housing defining a handle with an external wall. A motor is disposed in the housing. A switch is pivotally mounted in the handle about a first axis for actuating the motor. The switch has a first locking abutment. A latch is located adjacent the switch and is pivotally mounted in the handle about a second axis generally parallel to the first axis for movement back and forth between an engaged and a disengaged position. The latch has a second abutment for engaging the first abutment and preventing the switch from being actuated. The latch when pivoted to engage the first and second abutments applies a force vector generally intersecting the second axis.

Abstract: A breaker device is provided in which a lever can be locked in specified positions with an improved reliability and unlocking can be easily effected. A slider (60) carried by a lever (30) and a panel (22) of a casing (20) define a locking mechanism of the device. When the lever (30) is in a specified rotation position, the slider (60) and the panel (22) are engaged with each other to lock the lever (30) in that position. An unlock portion (62) for unlocking the locking mechanism is provided in a position to be covered by a handle portion (32) of the lever (30). Since this unlock portion (62) is protected by the handle portion (32), a tool or the like cannot come into contact with or strike the unlock portion (62). On the other hand, if a finger is placed on the handle portion (32) to rotate the lever (30), the tip of this finger is located at the underside of the handle portion (32), so that the unlock portion (62) can be easily operated.

Abstract: A child resistant switch lock having a body and a slide which can be installed over an existing mounted toggle-type or rocker-type switch. The slide is arranged to operate the toggle handle or rocker between an on and off positions. Stopping tabs on the body prevent movement of the slide from the off to the on positions unless the stopping tabs are first depressed. The required two handed operation, one to depress the stopping tabs and one to advance the slide, make operation by a child very difficult. The slide can operate the toggle handle of a toggle-type switch directly or the rocker of the rocker-type switch through intermediate cams contained in the body.

Abstract: A switch lock-out device to prevent unintended operation of a power tool through inadvertent actuation of a trigger operably associated with a motor as disclosed. The trigger is pivotally mounted in handle grip for energizing the power tool when depressed. An outer free end of the trigger extends within the handle grip. The switch lock-out device includes an integral multiple-armed element that is pivotally mounted within the handle grip. The pivotally mounted multiple-armed element includes a first arm that engages the outer free end of the trigger to prevent actuation, a second arm that includes a manual engageable button that extends outside of the handle grip and a third arm that engages an internal wall of the handle grip in biased and resilient engagement. When the manually engageable button is depressed, a first arm of the multiple-armed element is pivoted out of engagement with the free end of the trigger for actuation of the trigger to operate the power tool.

Abstract: In a data processing device, when exchanging a plug-in package with another without breaking the power to be supplied to the data processing device, a package removing lever is equipped with a locking piece. The lever does not move and the package hence cannot be removed, until the locking piece is released. In response to the release operation of the locking piece, a switch is activated to break off the power supply for the package. After the package is mounted perfectly, the power for the package is switched on by the action of the locking piece, thus preventing any misoperation when removing the package.

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

Abstract: In a data processing device, when exchanging a plug-in package with another without breaking off the power to be supplied to the data processing device, a package removing lever is equipped with a locking piece. The lever does not move and the package hence cannot be removed, until the locking piece is released. In response to the release operation of the locking piece, a switch is activated to break off the power supply for the package. After the package is mounted perfectly, the power for the package is switched on by the action of the locking piece, thus preventing any misoperation when removing the package.

Abstract: An equipment unit protection switch from an in-service equipment unit to a standby equipment unit is realized prior to any movement of the active equipment unit about to be removed from an equipment frame in which it is inserted. This is achieved by advantageously incorporating apparatus for generating an equipment unit removal indication signal that enables a controller to anticipate the removal of the equipment unit from the equipment frame. To this end, the equipment units employ an equipment unit latch and an associated switch to generate the equipment removal indication signal. Initial movement of the latch causes the equipment unit removal indication signal to be generated prior to any movement of the equipment unit in the frame in which it is inserted.

Abstract: A television receiver signal blocking system is provided which includes a television receiver, a television signal source and a television signal blocking mechanism therebetween. The television signal blocking mechanism includes a box from which electrical conductors are connected to the television receiver in a signal source, such as a television cable. Within the television signal blocking mechanism or box is a rotatable matching member which includes a latching arm and a switch carrying arm. The latching member is rotatable between three positions which permit the television signal blocking box to be opened to gain access to its interior while cutting off or blocking the signal; a second position in which the box is latched closed and the signal is not blocked; and a third position in which the box is closed and the signal is blocked.

Abstract: An equipment unit protection switch from an in-service equipment unit to a standby equipment unit is realized prior to any movement of the active equipment unit about to be removed from an equipment frame in which it is inserted. This is achieved by advantageously incorporating apparatus for generating an equipment unit removal indication signal that enables a controller to anticipate the removal of the equipment unit from the equipment frame. To this end, the equipment units employ an equipment unit latch and an associated switch to generate the equipment removal indication signal. Initial movement of the latch causes the equipment unit removal indication signal to be generated prior to any movement of the equipment unit in the frame in which it is inserted.

Abstract: A router including an arrangement for locking the shaft against rotation and preventing power from being supplied to the motor when the shaft is locked. The shaft is locked by movement of a lock bar which traps a flatted portion of the shaft in an appropriately dimensioned slot. A secondary switch in the power path to the motor is controlled by movement of the lock bar. In addition, an indicator lamp connected to the secondary switch is lit when the shaft is locked and the router is still connected to a source of power.

Abstract: A snap-action fastening device comprises an operative unit to be fastened to a switchboard and a flange unit having seats receiving fins of a member containing control and signalling units and adapted to be snapped on and fastened to an elongated stem of the operative unit. The flange unit has a rotatable lever having a central bore provided on a surface thereof with inwardly protruding teeth engageable in elongated slots formed in an end portion of the stem and retained in recesses extending transversely of the slots.

Abstract: An electrical switch includes a rocker-type actuator adapted to be pivoted between first and second positions within a housing in order to close and open switch contacts. The actuator slidably supports a latch which normally engages the housing to prevent the actuator from being pivoted to its switch-closed position. By pulling on the latch and then lifting on the actuator, the actuator may be pivoted to its switch-closed position; the two-step operation protecting against accidental actuation of the switch. The actuator may be returned to its switch-open position by a simple single motion thereby enabling rapid opening of the switch under emergency conditions. A high strength rivet supports the actuator for pivoting within the housing and also supports the latch to pivot with and to slide relative to the actuator.

Abstract: A switching mechanism in a circuit breaker having a latch being locked from moving when the circuit breaker is in a normal "on" state, a toggle link having a striking part being coupled to the latch and elastically urged with an elastic force by a switching spring at times when the circuit breaker is in the normal state and released from said urge at times when the circuit breaker is tripped or changed from the normal state to a tripped "off" state, and a stopper disposed adjacent the striking part of the toggle link in that when the circuit breaker is tripped, the latch is released to cause the striking part of the toggle link strike the stopper intermediate in the tripping action so that the time required for completing the tripping of the circuit is reduced.

Abstract: An alternate action mechanism having a housing with first and second transverse walls enclosing a snap-acting switch accessible through a hole in the first wall. An actuator includes a plunger disposed in the hole for operating the switch and a guide structure slidable along the exterior surface of the second wall. A cam formed on the second wall cooperates with a follower carried by the guide structure to alternately retain the plunger in and release it from a depressed position upon successive depressions.

Abstract: An appliance switch for an electric shaver is equipped with a safety device guarding against accidental operation, which device is slidable coplanar with the appliance switch, is arranged in a housing and is equipped with positive engagement members which are adapted to be slipped over a latch member of the appliance switch and prevent the latch member from being movable out of its locking position. In this manner, a reliable safeguard is provided preventing accidental operation of the shaver.