Abstract: A telephone lock box for preventing unauthorized access to a telephone. The telephone lock box includes a housing that has front and back sides, a pair of lateral sides, and a closed bottom. The sides define an interior of the housing that receives the telephone. An opening into the interior is defined by upper edges of the sides. A lid closes the opening of the housing. A rear end of the lid is pivotally coupled to the back wall of the housing. A forward end of the lid has a hasp coupled to it. The front side of the housing has a loop extending from it. A hinged portion of the hasp has a slot that receives the loop.

Abstract: A phone jack lock that is molded to the contours of a standard phone jack. When the lock is installed, a spring-loaded locking element protrudes behind the outer surface of the phone jack so that the lock cannot be removed without the key. All elements of the lock are contained within the contours of the interior of the phone jack, so that no element extends beyond the external surface of the jack when the lock is in place, i.e., the locked jack has the same profile as the unlocked jack. The lock may be used without installation effort or tools.

Abstract: A quick release latching mechanism is provided for restraining a handset of a telephone set. Easily adaptable to fit most existing telephone sets with minimal modifications, the latching mechanism is also easily manufactured, yet satisfies existing safety requirements by being able to restrain the handset during harsh operating conditions. The handset is securely restrained in the handset cradle of a telephone set base by a floating toggle type latch which is balanced around its pivot point and is the only moving part in the quick release latching mechanism. A coil spring is provided to return this latch to its closed position. Any shock forces encountered by the latch are not absorbed or counterbalanced by the spring force since these shock forces are applied in a direction normal to the force exerted by the spring. The spring force, therefore, does not secure the latch in the closed position. Rathr it simply serves to return the latch to this position when the latch is permitted to move freely.

Abstract: The mechanical safety assembly for a telephone set having a housing with a cover including a sliding lock for closing the cover (7). The lock includes an operating head (13) external to the body (1) of the telephone set or terminal. The head fits flush with the wall of the body (1) when in the closed position and leaving only smooth surface visible, one of said surfaces (23) being pierced with a hooking aperture (24) which is accessible by a tip (25) of a paperclip or ballpoint pen.

Abstract: An apparatus for the locking attachment of a mobile, cellular phone in a secure position such as being attached to a floor or like supporting surface within a vehicle to prevent unauthorized removal of the phone but still allow freedom of use and ease of removal of the phone from the locking apparatus or the locking apparatus from its attachment to a supporting surface when it is desired to transport the phone with a user from one location to another.

Abstract: A telephone lock for preventing the plug of a telephone from being inserted into a corresponding line jack unit comprises a locking means including a shank member of a suitable length and size to be accommodated in the socket of a line jack unit in substitution for a telephone plug proper. The shank member has a movable locking member mounted thereon which is arranged to be in use moved by the locking means to engage a part of the line jack unit socket to prevent removal of the telephone lock from the line jack unit.

Abstract: A security mechanism for use in a telephone paystation upper housing consisting of a specialized latching mechanism which operates when a non-legal key combination is utilized to gain access to a paystation upper housing to inhibit unlocking of the upper housing and to inhibit the removal of key utilized to gain access to the upper housing. The mechanism is available in kit form and may be added to existing paystations without major modification thereto.

Abstract: A device for locking and unlocking an unused modular communication's socket comprising a sliding wedge which positioned under leaf spring of socket plug prevents plug from being removed from modular socket while wedge is locked into position, rendering socket unusable while plug is engaged in socket.

Abstract: A lock is provided for a pushbutton phone, whereby when a correct key is inserted to rotate a cylinder an actuating member is forced to rotate therewith so that two arms of the actuating member urge two sliding plates to slide, causing the projections of the sliding plates to bear against the arms of a confining member and enabling teeth on the arms of the confining member to lock up the pushbuttons. When the correct key is inserted to rotate the cylinder back to its original position, the projections of the sliding plates separate from the arms of the confining member and the arms then go back to their original states to release the pushbuttons.

Abstract: A telephone dial shielding device is provided to cover the dialing area on a telephone base to prevent an unauthorized person from making calls therefrom. A modification includes a door which when unlocked will uncover the dialing area so that a person can make calls without removing the device completely from the telephone base.

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: A security cover lockably engageable with surface mounted apparatus for preventing unauthorized access to the apparatus. The security cover includes a shell with peripheral sides which closely conform to the size of the apparatus over which it fits, and a pair of tangs on the shell edge wedgable between the apparatus and the surface. A key lock is mounted within the outer surface of the protective cover and includes a slotted finger rotatable with the lock cylinder. The fastener with which the apparatus is fixed to the surface is replaced by a double-headed fastener and is engageable with the slotted finger to thereby lock the protective cover to the apparatus. In the alternative, another apparatus screw is replaced with a double-headed fastener and, instead of tangs, a side edge of the cover is slotted for engagement with the second double-headed screw.

Abstract: The pushbutton lock is used to lock one or more selected pushbuttons on a pushbutton type of telephone in order to prevent the making of unauthorized calls from that telephone. The locking of pushbuttons in other types of keysets also is described. A cover for one or more pushbuttons is secured in place by a gripping mechanism which grips at least two opposite sides of one or more of the pushbuttons when a lock cylinder is turned. The lock actuating mechanism is located vertically above the gripping mechanism so that the cover can be made small enough to fit around one or two of the pushbuttons and leave the others exposed for use, if desired.

Abstract: A locking assembly is provided that can be placed over a push-button keyboard to prevent unauthorized use. The entire keyboard is covered and a tumbler-activating key is inserted externally, rotated and withdrawn. When installed on a telephone, the device allow incoming calls to be received. If pried off of the keyboard to allow emergency use, no major damage would be inflicted to the keys, but the assembly could not be reinstalled without unlocking.

Abstract: A keyboard lock mechanism is disclosed herein for preventing all or some of the keys or pushbuttons on a telephone from being depressed which includes a mounting plate attached detachably or permanently to the body or case of the telephone and having a central opening therein exposing the full keyboard of keys normally carried on the telephone body. A movable cover is pivotally or slidably carried on the mounting plate for selective positioning over the keys of the keyboard so that the keys are inaccessible. A lock having a movable latch releasably secures the cover over the keys or pushbuttons. Attachments are provided on the mounting plate for securing the mechanism onto the telephone body.

Abstract: A locking device for telecommunications transceivers includes a key operated lock cylinder contained in a frame designed to fit between a transceiver's side mounted cradle and the opposed side of the transceiver's base, a latch bar attached to the lock cylinder and rotatable with the lock cylinder to engage the cradle in such a manner as the frame may not be removed, the frame acting as a wedge which holds the cradle down and keeps the transceiver electrically inactive.

Abstract: A lock designed specifically to lock up a plug-in socket of a modular type telephone; the lock including a jack that snap locks into the socket, a key-operated bolt for unlocking the jack therefrom, and an integral clamp for selectively clamping around the extension cord extending from a telephone desk set for securing the same from theft.

Abstract: A lockable cover assembly for a push-button key pad, such as for telephones or the like, includes a face plate having apertures through which the push-buttons extend outwardly. The face plate also includes a plurality of slots along one edge thereof, and a lock access hole disposed adjacent to the opposing edge. A key pad cover includes a plurality of locking lugs along one edge which engage the slots of the key pad cover, and a lock disposed at the opposing edge of the cover. The lock includes a shaft which extends through the access hole of the cover to engage an inner portion of the housing of the unit being protected.

Abstract: A telephone dial lock assembly including a shield plate, shackle and lock covers and immobilizes the dial of a trimline telephone instrument to render the telephone dialing mechanism inoperable for making outgoing calls. No interference is presented to the use of the telephone instrument for the receipt of incoming calls.

Abstract: A telephone locking apparatus. The apparatus includes a base plate and keeper plate which cooperatively define jaw means for clamping the apparatus to the handhold shelf of a telephone desk set. The apparatus also includes a locking plate hingedly connected to the base plate and interlockable therewith for maintaining the switch hooks of the telephone in a depressed state to substantially avoid unauthorized use of the telephone.