Abstract: In a safety door-locking system for a switchgear cabinet, in which the electric operating state inside the switchgear cabinet is operationally connected to a locking device of a cabinet door of the switchgear cabinet, it is provided that a position of a switch in the switchgear cabinet is coupled via a mechanical connecting system (9, 10, 11, 12, 4, 5) to a locking linkage of the cabinet door. For this purpose, a rotatably (14a) mounted control disc (9) is permanently connected to the switch in the switchgear cabinet (1), the control disc (9) additionally representing the position of the switch. The control disc (9) and a locking rod (4) are operationally connected mechanically via a connecting rod (10) and a connecting angle (11) held between guide pins (12a, b) in the locking rod (4), and the locking rod (4) is mounted displaceably (19) for the purpose of locking the locking linkage of the cabinet door.

Abstract: A key operated switch is provided for disabling an automobile air bag passive restraint system. The two or four position switch includes a housing, a rotor, a plurality of rotationally actuated electrical switch elements, a key ejecting mechanism, and a positive positioning detent. The switch assembly is arranged such that a transverse surface of the rotor defining a key slot is accessible through the housing. The key slot allows an operating key to be manually inserted into the rotor. In or order to insert the key, however, the therein, a certain minimum amount of force must be applied to the key sufficient to overcome the key ejecting mechanism. In the absence of such minimum insertion force, the key ejecting mechanism will act expel the key from the rotor. Once inserted into the rotor, the key may be manually rotated which causes corresponding rotation of the rotor.

Abstract: The invention concerns a closure with a closure cylinder whose cylinder core (33) can be moved by a key into different operating positions. The object of the invention is for at least one microswitch (50) to be actuated by switching cams (42) only once, even if the switching cam (42) continues to be moved when the microswitch (50) has been actuated. During the return movement, this microswitch (50) should not be triggered by the switching cam (42) again, and so faulty switching is avoided. To that end, a control member (40) cooperates via a separable coupling (35, 45) with a control member (40) on which the switching cam (42) is located. The control member (40) is acted upon by a restoring spring (46) which endeavors to move the control member into an initial position and simultaneously subject it to a force (43) in the coupling sense by the cylinder core (33).

Abstract: A key cylinder rotatable about an axis and a motor-vehicle door latch having a housing are used with a position-sensing system having a selector nut made of a nonferromagnetic material and coaxial with and coupled to the key cylinder for joint rotation about the axis therewith, an actuating permanent magnet imbedded in the selector nut and movable in an orbit about the axis on rotation of the selector nut about the axis, and a hall-effect sensor mounted on the latch housing at a small spacing from the orbit.

Abstract: A motor vehicle door lock has a key operated lock cylinder signalling antitheft and locking-and-unlocking positions via Hall effect chips which include electronic circuitry working into evaluation circuitry connected to the chips. The chips themselves can be selected from a series of mass produced chips based on criteria including the magnetic thresholds and electrical thresholds of the chips provided that the thresholds of the evaluation circuitry are selected appropriately matching of each chip or its Hall effect element to the system is thoroughly avoided.

Abstract: A locking device for vehicles, particularly for vehicle doors has a mechanical revolving connection between a cylinder core of a lock cylinder and a safety lever of an assigned lock which comprises a driving coupling in the form of a lock nut. In order to achieve a simplification of the construction and mounting of the locking device while ensuring the operability of the locking device when it is operated mechanically as well as when the central locking system is operated, the lock nut is constructed in one piece. An end side of the lock nut facing an operating lever arm of the safety lever has two stops spaced angularly from one another and projecting from the end side. The operating lever arm engages between the stops, so that when the lock nut is rotated, a locking or unlocking position of the safety lever is achieved after an idling path.

Abstract: A lock system has a lock cylinder pivotal about an axis between a pair of end positions and through a center starting position, a key fittable into the cylinder and actuatable to pivot the cylinder between its positions, an arcuate magnet centered on the axis and coupled to the cylinder for joint movement therewith, and a pair of angularly spaced Hall-effect sensors adjacent the magnet, trippable by the magnet to generate respective outputs, and positioned such that in the central position the magnet is closely juxtaposed with and trips both sensors, in one of the end positions the magnet is closely juxtaposed with and trips only one of the sensors and is spaced from the other of the sensors, and in the other end position the magnet is closely juxtaposed with and trips only the other sensor and is spaced from the one sensor.

Abstract: A motor-vehicle door-latch system has a key cylinder pivotal about an axis from a center starting position into a pair of opposite end positions flanking the center position, a key insertable into the cylinder only in the starting position thereof, a latch operable by the cylinder on displacement of same into one of the end positions, and an arcuate magnet pivotal about the axis, polarized generally parallel to the axis, and coupled to the cylinder for joint angular movement therewith. A pair of hall-effect sensors are juxtaposed with the magnet and positioned such that in the central position the magnet is closely juxtaposed with both sensors, in the one end position the magnet is closely juxtaposed with one of the sensors and is spaced from the other of the sensors, and in the other end position the magnet is closely juxtaposed with the other sensor and is spaced from the one sensor.

Abstract: A lock assembly for locking a control lever in a neutral or non-active position includes a lock mechanism having a locking pin and a locking bracket for receiving the locking pin. The locking bracket is secured to the control lever and prevents the lever from moving when the locking pin is engaged with the bracket. The control lever controls a work function of a work machine and the lock assembly prevents unintentional activation of the control lever.

Abstract: A combined lock/actuator for providing linear actuation including a lock barrel having an opening extending along a longitudinal axis, a spline in the opening extending along the longitudinal axis, a plug mounted in the opening, and a key-retractable tumbler carried by the plug and extending into the spline. The plug is rotatable within the opening over a fixed annular displacement between an actuation position and a release position. Further, the plug is translatable within the opening over a fixed axial displacement along the longitudinal axis between a first position and a second position. The tumbler extends into the spline when the plug is in the actuation position in the first position, when the plug is in the actuation position in the second position, and when the plug is in the actuation position in translating between the first and second positions.

Abstract: A closure fastener comprising a hasp assembly pivotally connected to a staple assembly. The hasp assembly includes a latch arm having an aperture adjacent its free end. The staple assembly includes a staple having an aperture disposed transversely therethrough providing a passage for a shackle of a lock, the staple being received by and extending through the latch arm aperture when the latch arm is in a closed position. A base member is integrally connected to the staple and has an aperture therethrough for receiving a switch engagement member of a disconnect switch. A stud is integrally connected to the base member, the stud having an aperture disposed transversely therethrough. A pivot pin in disposed through the stud aperture and through a pivot pin receiving aperture of the latch arm, thereby pivotally connecting the hasp assembly to the staple assembly.

Abstract: For the purpose of protecting a computer, the cover or the door (2) thereof, by which the computer housing can be closed, comprises a lock (8) operable by a key (9) and having a latch element (11) which in a first position prevents both the operation of the on/off switch (3) of the computer and the opening of the cover or the door, in a second position does not prevent the operation of the on/off switch but does prevent the opening of the cover or the door, and in a third position enables both the operation of the switch and the opening of the housing.

Abstract: A key actuated lock is mounted within a protective enclosure which has a double hinged panel cover that projects into a slot between the bottom panel of the protective enclosure and the bottom of the lock mounted within the protective enclosure when the double hinged panel cover is closed. Both the protective enclosure and the double hinged panel cover have apertures that align when the double hinged panel cover is closed. Actuation of the lock within the protective enclosure moves a locking bolt from a unlocked retracted position to a locked extended position that projects the locking bolt through the two aligned apertures, thereby holding the double hinged panel cover closed.

Abstract: An electric lock for children's automobiles including a base having a corrugated annular member engaged with three terminals, a cover engaged with a top of the base and formed with a first keyhole, a spring mounted under the cover, a driving disk mounted under the spring and having a second keyhole aligned with the first keyhole of the cover, a cylindrical portion at a bottom thereof, and two pins downwardly depending from the cylindrical portion, and a conducting plate arranged under the driving disk and having a third keyhole aligned with second keyhole of the driving disk, a first corrugated portion with a plurality of wavelike folds engaged with the corrugated annular member, and a second corrugated portion with a single wavelike fold engaged with the corrugated annular member, and a power connector for connecting with a power source and a controller.

Abstract: A vehicle door latch includes an integral switch assembly which optionally includes a central locking switch and a central glass drive switch. The switches are responsive to movement of latch elements and perform the switching functions for circuitry that effects securement and unsecurement of the vehicle in a preselected manner.

Abstract: A key lock mechanism which can be made entirely of molded plastic parts having (1) a lock shell that can be snap fit in a mounting opening, wherein the shell is a predominantly cylindrical casing having a front end, a rear end, and an interior longitudinal channel; and (2) a lock plug, having a front end and a rear end, longitudinally housed within and rotatable about the longitudinal axis of the shell. The front end of the lock plug has a keyway allowing the insertion of a key to operate a double-acting, bar tumbler having a rocker body with a front peg and rear peg; an integral axle perpendicular to and connecting the center rocker body to a left and a right pivot pad upon which the bar tumbler pivots. The insertion of the key pivots the bar tumbler within the longitudinal shell channel and enables the key to turn the plug within the shell to operate the lock. The rear end of the plug receives a snap on actuation means such as a cam.

Abstract: A key operated door interlock switch is provided with a cam structure having a first cam and a second cam connected together for rotation about a first axis. A key is shaped to have first and second actuator portions that can be moved into a switch housing to engage first and second lobes of the first and second cams. The first and second actuator portions of the key engage the lobes sequentially to rotate the cam mechanism about the first axis. Rotation of the cam mechanism causes a plunger to move linearly relative to the support structure and operate an electrical switch that permits associated equipment, such as machinery to be actuated. The relative lengths of the first and second actuator portions of the key can be selected to match the arcuate displacement of the lobes of the cams relative to the first axis. This flexibility allows the switch to be customized so that only particular keys can actuate particular switches even though their general appearance is similar.

Abstract: An actuator switch enclosure utilizing a plate capable of being positioned against the cover of the electrical switch actuator. A holder is also included in the present invention for maintaining the position of the plate against the associated cover utilizing fastener openings in the cover. A flap is attached to the plate and is capable of moving into a position where the flap is at least partially against the plate. The flap further possesses a pair of compartments for enclosing switch actuators of different types and preventing the same from being employed. The flap is secured to the plate to prevent unauthorized opening of the same.

Abstract: A plate pivotally mounted to a padlock hasp adjacent a reciprocally movable operator handle is pivotable from a stored position to one covering the opening of the hasp, the plate having a hole aligned with the opening and smaller than the opening to receive the shackle of a single, scissors-type safety lockout and maintain the shackle in position to block movement of the operator handle to an operated position. The hole is preferably rectangular to conform to the flat, thin shape of the safety lockout shackle to maintain the shackle properly oriented. An additional round hole for a smaller diameter padlock shackle may be provided in said plate.

Abstract: A lock and key actuator for actuating a desired controlled component upon insertion of a key into the lock. The actuator includes either a sliding or pivoting member movable between non-actuated and actuated positions. The actuator may include a slidable plunger between the lock and controlled component. The system may be employed as a buzzer actuator on a vehicle ignition lock for signalling that a key is in the lock under certain conditions.

Abstract: A key actuated secure docking apparatus for a portable computer locks the apparatus so that internal electronic devices are prevented from being detached from a base body of a docking apparatus, even if the desktop base is left without a docked portable computer. Further, the key mechanism allows the docking apparatus to be placed in a condition in which power supply for the docking apparatus cannot be turned on even if the power switch for the power supply is turned on. Data in a storage device internal to the docking apparatus cannot be stolen or destroyed by attempting docking with a portable computer since power is not supplied to the storage device.

Abstract: A lockout strip for an electrical switch of the type having a housing, an opening in the front face of the housing, an operating lever with lugs at its outer end extending out of the opening in the housing and stop surfaces at opposite ends of the opening in the housing. The stop surfaces define the "on" and "off" conditions of the switch. The lockout strip is formed of a thin, rectilinear piece of relatively stiff material, preferably plastic. An irregular shaped cutout is formed in the strip. The cutout has a central, rectangular portion of sufficient width to fit over the lever and its laterally extending lugs so as to allow the strip to be positioned against the front face of the switch housing. The cutout also has a narrow portion located longitudinally adjacent the central portion with sufficient width to receive the operating lever but not sufficiently wide to clear its lugs. This narrower cutout is inside lateral shoulders which fit under and engage the lugs of the lever.

Abstract: A circuit module for a vehicle ignition lock. The circuit module houses a pair of electrical contacts on either side of a key way for closing a circuit between the contacts and a resistor provided in a key. The circuit module includes a cover and base adapted to be secured to one another for enveloping and securely holding a wire set within the module and for positioning the contacts in proper alignment with the key way. The circuit module is adapted to fit into a cylindrical cavity provided in a bezel of the lock.

Abstract: A core lock assembly which is operable by two differently bitted keys is disclosed. The core lock assembly includes a shell defining a hollow portion for receiving a core which is capable of rotating to a first position under the control of a first key and to a second position under the control of a second, differently bitted key. The core lock assembly also includes a core rotation mechanism housed in the core for changing from a locked state to a first core rotatable state when the core rotation mechanism is engaged by the first key and for changing from the locked state to a second core rotatable state when the core rotation mechanism is engaged by the second key. The inner surface of the shell defines locking, first and second surface areas for cooperating with the core rotation mechanism.

Abstract: A locking device for an electrical toggle switch has a fixed, one piece locking body. An opening extends through the body for receiving a mounting screw for a switch face plate to mount the body on the face plate. The mounting screw receiving opening is provided with an access in the body adjacent the opening to locate the mounting screw in the opening while the mounting screw is still engaged with the switch face plate. An additional opening extends through the body and is spaced from the mounting screw receiving opening. The additional opening is defined by an abutment for engaging the toggle arm of the switch and for preventing movement of the toggle arm from one position to another position, particularly from an off position to an on position.

Abstract: A combinating tumbler lock featuring zero clearance between the lock plug and mounting shell including: a mounting shell having a central throughbore with a front section having a first, greater diameter and including longitudinal locking grooves, a rear section having a second smaller diameter and including longitudinal stopping grooves, and a tapered transition section between the front and rear sections; a lock plug for selective rotation within the mounting shell and having three sections corresponding in diameter to the sections in the mounting shell, the lock plug front section including a tumbler receiving opening, the lock plug rear section including a cam-receiving structure and a first radial throughbore, the lock plug also including a second radial throughbore between the front section and the tapered section; a tumbler disposed in the lock plug for selective engagement with the longitudinal locking grooves of the shell; a spring loaded stop comprising two spherical balls actuated by a compression

Abstract: A tailgate handle assembly in a housing including a flush-mounted handle and an adjacent key cylinder. The housing is spaced apart from a tailgate latch mechanism. A laterally extending lever is slidably actuated on the housing from a locked mode to an unlocked mode manually by rotation of the key cylinder, or electrically via a power actuator, and then pivoted by manual lift-pulling on the handle, to thereby lift a latch rod extending between the lever and the latch mechanism to actuate the latter. An electrical limit switch is mounted on the handle assembly, adapted to being actuated by one slidable movement of the lever to unlock the latch of an upwardly pivotable tailgate window.

Abstract: A lock-out device for electrical circuits which includes an elongated, open sided C-shaped housing having parallel side walls each joined at an edge to a back panel. Each side wall defines a plurality of spaced, open slots. The slots in the side walls are paired in transverse alignment, and dimensioned to receive elongated locking pins. Each locking pin carries spaced annular grooves dimensioned to permit each pin to be engaged by the two side walls when the pin is placed in two aligned slots in a slot pair. A cover plate hinged to the side walls at one end of the housing pivots between an open position and a housing closed position in which it prevents removal of the locking pins from slot pairs in which they are received.

Abstract: Substitutable plug assemblies are removably retained at an operating position within a forwardly opening chamber of the barrel of a lock assembly. A plug assembly that has been inserted to the operating position is releasably retained within the enshrouding barrel by a retainer that is moved by spring bias to a plug-retaining position wherein the retainer bridges complementary formations that are defined by the barrel and by the inserted plug assembly. A retained plug assembly that has been inserted to the operating position can be rotated about the central axis relative to the barrel between at least a pair of angularly spaced positions. One of the plug assemblies carries tumblers that are engageable with interior portions of the barrel for locking the one plug assembly in at least one of the angularly spaced positions unless the one plug assembly is unlocked by a suitably configured key. The other of the substitutable plug assemblies preferably includes a manually operable formation such as a knob.

Abstract: The invention comprises a locking plate device for attachment to opposite sides of a electrical breaker switch to prevent accidental movement of the breaker switch from an "Off" to an "On" position. The plate device has a U shaped metal plate with parallel flanges extending from its apex and with the parallel flanges adapted to be placed on opposite sides of the breaker switch and on top of the breaker switch housing. A threaded rod extends through the flanges with a lock nut threaded onto one end and the nut engaged against the outside of one flange, and with an enlarged head on the threaded rod engaging the outside of the other flanges whereby rotation of the screw in one direction will draw the lock nut and one flange toward the other flange to adjust the flanges toward the sides of switches with smaller widths. The plate has a lever arm pivotally mounted on the threaded rod.

Abstract: A device is disclosed for sensing the rotary angle of a key-actuated lock system which contains a lock cylinder of a door or flap of a vehicle which is rotatable by way of a key. A follower is coupled to the lock cylinder via a driving coupling allowing a free-wheel rotational play and to a protection element of a lock and is rotatably mounted in a door interior. A switch-actuating part is rotationally coupled to the lock cylinder virtually free of play and is rotatable synchronously with the lock cylinder and a control switch which is switchable by the switch-actuating part at a specific rotary angle of the part and directly spatially adjacent thereto. The switch-actuating part is mounted behind the follower in relation to the lock cylinder on a carrier facing the interior of the vehicle and is fixed to the door or flap. A control switch is retained at least indirectly on the same carrier, and at least these two parts are sealed off relative to the door interior.

Abstract: A security system for a gaming device prevents a door on the gaming device from being opened during a power failure so as to prevent tampering with the controls of the gaming device when no power is supplied to the system. When power is supplied to the system, a processor logs the time of occurrence of detected door openings in a nonerasable programmable memory so as to provide a record thereof. The information is stored in a sequential manner in accordance with the time of occurrence of the door opening events so that the microprocessor can verify the information stored. If any anomalies are detected in the stored information, the microprocessor 10 can prevent operation of the gaming device or generate alarms.

Abstract: A one-piece integral molded plastic article, includes a pair of main parts hinged together, which enclose the actuating element of the circuit breaker and holds it against movement. One form is for push-pull type circuit breakers. Another form includes soft inserts which grip the actuating element and hold it. Another form includes a separate cap which is applied semi-permanently to the actuating members. Latching means latches the main parts together, which hold them in normally latched position, and a padlock locks them together.

Abstract: The key-operated switch enables realization of a switch construction which is extensively independent of the dimensions of standard cylinder locks and mounting thereof independent of the surroundings. A switch housing open at one side comprises side walls, a floor, a lower portion and an upper portion. Longitudinal slots provided at the side walls extend parallel to wide side edges of the side walls and serve for guiding first fastening screws. A housing cover member which fits in the housing opening and having bevelled corners and flaps is displaceable throughout a predetermined distance along the longitudinal slots. At the operator side of the key-operated switch the housing cover member carries a collar connected by second fastening screws with such housing cover member. A throughpass opening is provided at the housing cover member through which piercingly extends a standard cylinder lock attached at the collar.

Abstract: A switch for controlling the operation of a motor boat comprises a cylinder and a key. The key includes a grippable knob and a detachable key actuator which engages a key-receiving member in the cylinder. The knob is turned from a first stable angular orientation (that is, an off-position) to a second stable angular orientation (that is, an on-position) to operate the motor. The knob is also coupled by means of a lanyard to the operator. If the operator falls overboard, the knob will separate from the key actuator and springs located inside the cylinder return the switch to the off-position. The switch also permits the a choke signal to be sent to the motor by pressing inwardly on the knob.

Abstract: A key switch assembly, which can reliably eliminate swinging of the key end and erroneous operation due to incomplete insertion of a key. A guide extends rearward of a lock cylinder received in a lock body and parallel to a switch juxtaposition. One side of the guide is aligned to an extension of a key groove surface and is provided with an axial positioning ridge for engagement with an axial positioning groove formed in a side of the key. A restricting front face of a guide disk secured to the lock body is held in contact with the rear face of the lock cylinder. The guide disk is provided with a restricting notch, the radius of curvature of an arcuate edge of which is made smaller than the radius of rotation of the key. The key has an edge provided with an escapement groove, into which the arcuate edge escapes when the key inserted to a predetermined depth is turned, and the guide has its stem provided with an escapement groove, which is engaged by the arcuate edge.

Abstract: A locking device consisting of key (2) and locking cylinder (1), in particular for the actuation of electric microswitches on keyboards, telephone or the like, has a locking cylinder housing (5) and a cylinder core (11) arranged for rotation in the bore thereof and cooperating with tumblers (16). The key (2), which has a stepped-down key shaft (35) is insertable into the cylinder core which has a head plate (12), coming after a specific rotation to rest against stops of the locking cylinder housing (5). In order to obtain a simplified construction with increased security and small structural length, there is a free space between the head plate (12) of the cylinder core (11) arranged on the front side of the locking cylinder (1) and the head end (14) of the locking cylinder housing (5). Into the free space the key-shaft shoulder (37) enters, and one or more stops of the locking cylinder housing (5), are arranged at different distances from an axis of rotation of the core.

Abstract: The present invention relates to a lock mechanism for data processing equipment. The lock mechanism can simultaneously switch the power supply on or off, lock or unlock the housing of the equipment, and lock or unlock a removable covering installed over a drive assembly. The lock mechanism has a leafspring to produce self-retaining and positively-engaged final positions of a pivoted lever lock. Attached to the lever lock are a plurality of swivel arms arranged and located to perform the simultaneous functions mentioned above. Further, the lock mechanism includes a lock bolt biased closed by a compression spring and actuated by one of the swivel arms.

Abstract: A doorbell block (A) is disclosed which includes a cover (18) and a pair of movable sidewalls (26, 28) which are biased towards each other to grippingly engage a doorbell housing (14) so that a face plate (20) of the cover prevents actuation of the door bell button (16) and unwanted rings. Tab openings (E) allow the user to spread the sidewalls apart for installation and removal. A biasing spring (C) urges the sidewalls together to grippingly engage the doorbell housing to retain the cover in place.

Abstract: A locking closure for a rotary control member includes a compartment portion, a base portion and an access portion. The access portion has an access opening disposed therein proximate to and adjacent to the rotary control member. A cover plate is securely mounted on the closure access portion and covers the access opening. The access portion includes an extension which interferingly engages an edge of the cover plate so as to prevent any rotational movement of the cover plate away from the access opening.

Abstract: The invention is an assembly of a push-pull switch and a device to selectively limit the action of the push-pull switch. The switch has a body, a plunger translatable into or from the body, and a round head on the plunger. The switch opens or closes depending on whether the plunger is extended or retracted. The device is comprised of two semi-cylindrical sleeve halves that fit together to form a complete sleeve about the head of the plunger. The sleeve is open at both ends, has two internal grooves into which the head can snugly fit, and has an external groove to accommodate a clip, tie or like mechanism for holding the sleeve halves together. Depending on which internal groove is fit over the head and on which end of the sleeve faces the body of the switch, the plunger will either be locked in an extended position or will be prevented from resting in a retracted position.

Abstract: This lock, which may be coded-keycard operated, has a set-table device on the inside of the door by which the maid, for instance, can be locked out. The lockout setting device is preferably in the form of a pushbutton or deadbolt turnpiece which manipulates a switch in the code-receiving circuitry. The lockout setting is automatically cancelled when the latch is retracted. When the setting device comprises a deadbolt turnpiece, the deadbolt is biased toward retracted position and the setting device holds the deadbolt extended. When the latch is retracted in the latter version, the retraction cancels the lockout setting and permits the deadbolt to retract under the power of the deadbolt biasing spring.The invention also includes a non-code-operated embodiment in which a deadbolt is spriing driven to retracted position as the latch is retracted in latching to protect the deadbolt, lock and door frame.

Abstract: A handle interlock arrangement is attached to the top surface of a manually operable circuit breaker operating handle to prevent the handle from being locked in its "OFF" position when the circuit breaker contacts are actually in their closed condition. A handle cover is hingeably attached to the circuit breaker cover and includes a pair of apertures arranged through the opposite sidewalls of the cover. The location of the apertures relative to the circuit breaker operating handle prevents the insertion of a padlock through the apertures when the circuit breaker operating handle is in its "ON" position.

Abstract: A locking apparatus with a key comprising a cylindrical body, a cylindrical operation member mounted inside the body, a first spring for returning the operation member to an original position, a key rotor mounted inside the operation member, a second spring for urging the key rotor to rotate to an original position, a limiting member provided in the key rotor, a third spring for urging the limiting member to project outwardly from the key rotor, an engagement portion disposed in the body, the engagement portion being engaged with the limiting member projected outwardly by the third spring when the operation member is pushed inwardly by a predetermined stroke along the axis against the first spring by a manual operation, and a disengagement portion provide in the body, the disengagement portion unlocking the limiting member from the engagement portion thereby returning the operation member and the key rotor to original positions under the elastic forces of the first and second springs in response to rotation o

Abstract: An actuating structure is provided for a lock having a barrel with a plug which is key-actuated for rotation therein, and a switch having a shaft and rotor rotatable with the plug. A first lug is fixed relative to the barrel and a second lug rotates with the plug. A first stop washer is provided having two slots therein, one slot receiving the first lug to allow limited rotation of the first washer relative to the barrel and the other slot receiving the second lug to allow limited rotation of the first washer relative to the plug. A second stop washer is also provided having two slots therein, one of the slots receiving the first lug to allow limited rotation of the second washer relative to the barrel and the other slot receiving the second lug to allow limited rotation of the second washer relative to the plug. A spring is provided to rotationally bias the stop washers in opposite directions.

Abstract: This invention is directed at a switch lock comprising a top plate positioned between the lock portion and the switch portion. The top plate includes a recess which provides stop means for the switch lock.

Abstract: This control comprises a pivotable actuating lever 6 whose ends forms a lug 20 for actuating the electric circuit of the latch and a heel 18 cooperative with a linkage for mechanically controlling the latch. A barrel 14 actuated by a key carries a locking cam 32 which, on one hand, actuates a bistable relay of the general electric supply circuit, and, on the other hand, forms an abutment 34 for stopping the pivoting of the lever 6. This cam may be shifted by means of the key so as to retract the abutment 34 and enable the lever to pivot until the linkage is brought into action for mechanically opening the latch.

Abstract: Telephone instruments have an apertured base through which project depressible dialing elements, such as touch tone keys or push buttons. A locking device for telephone instruments with depressible keys or buttons comprises a body fixed to the base and formed with a bore therethrough. Disposed within the bore of the body is a movable member that has one end thereof projecting over a depressible dialing element. By moving the movable member in one direction, a depressible dialing element is depressed to lock the telephone instrument. By moving the movable member in an opposite direction, the depressed dialing element under its own yieldable action rises to become fully extended to enable the telephone instrument to be operated.

Abstract: A handle lock device for a switch, to be mounted to a switch manipulation handle protruded through a handle manipulation opening of a case in which a switching mechanism of the toggle-type is contained, is a lock cover which has a portion elongated so as to be introduced into the handle manipulation opening, whereby the lock cover prevents sufficient handle swing to effect the switching, since one of the side surfaces of the elongated portion is adapted to abut one of the end surfaces of the handle manipulation opening before the toggle-link goes over its dead center. The handle lock device makes it possible that a single lock cover can be used to lock handles of switches having different angles in the "on" and "off" states, and also that the handle may be easily and simply locked by a locking means having a simple constitution.

Abstract: The invention is a positive lockout means for circuit breakers in an electrical distribution box wherein a central bar extends from top to bottom of the box between the arrays of circuit breakers. The bar has an array of bores extending into the bar from the top side of the distribution. Rod-like locking elements having a configuration which permits one end of the locking element to pass into a bore in a circuit breaker actuator while the other end is inserted in a bore in the bar to prevent movement of the actuator element so secured. Positive lockout is provided by a cover plate which is positively secured in position over the central bar.