Abstract: In one aspect the present invention provides a door strike which prevents the opening of an associated door when the door strike has been heated to an elevated temperature of at least about 1000° F., preferably when the door strike is at higher temperatures such as are present during a fire in a building structure. The door strike includes a thermally responsive element which retards the normal operation of the door strike when it is at an elevated temperature. A further aspect of the invention is a method for controlling the undesired spread of a fire or smoke between adjacent spaces separated by the door wherein a fire or smoke condition exists in at least one of these spaces, via the provision of a door strike having a thermally responsive element which retards the normal operation of the door strike when it is at an elevated temperature.

Abstract: An electric strike having two independent keepers. The strike works with a lockset having both a deadbolt and a mortise lock bolt. A latch adapted to engage a deadbolt is provided with a solenoid to lock or unlock the latch. Another latch adapted to engage a mortise lock bolt is provided with a solenoid to lock or unlock the latch. Each latch is independently operable.

Abstract: An electric strike having two independent keepers. The strike works with a lockset having both a deadbolt and a mortise lock bolt. A latch adapted to engage a deadbolt is provided with a solenoid to lock or unlock the latch. Another latch adapted to engage a mortise lock bolt is provided with a solenoid to lock or unlock the latch. Each latch is independently operable.

Abstract: In one aspect the present invention provides a door strike which prevents the opening of an associated door when the door strike has been heated to an elevated temperature of at least about 1000° F., preferably when the door strike is at higher temperatures such as are present during a fire in a building structure. The door strike includes a thermally responsive element which retards the normal operation of the door strike when it is at an elevated temperature.

Abstract: A magnetically mounted template for identifying the optimum installation location for a door hardware device. The template has a working element that engages a cooperating door hardware device, for example, a working latch that engages a bolt. The template is particularly suitable for installing electrically operable door hardware devices, such as electric strikes, which require wiring as well as mechanical attachment to a door frame or door.

Abstract: A magnetically mounted template for identifying the optimum installation location for a door hardware device. The template has a working element that engages a cooperating door hardware device, for example, a working latch that engages a bolt. The template is particularly suitable for installing electrically operable door hardware devices, such as electric strikes, which require wiring as well as mechanical attachment to a door frame or door.

Abstract: A high strength electrically operable door strike having a simplified design and a gravity fed locking member. The strike comprises two solenoids operating in opposite directions wherein one solenoid is used when the strike is mounted for use with a left hand opening door and the other solenoid is used when the strike is mounted for use with a right hand opening door. The strike is simply turned upside down to accommodate a door having the opposite hand. The strike has a housing which is reinforced with ribs. The ribs also provide a reduced surface area sliding surface for the gravity fed locking member and thereby permit the locking member to slide up and down with less friction.

Abstract: A high strength electrically operable door strike having a simplified design and a gravity fed locking member. The strike comprises two solenoids operating in opposite directions wherein one solenoid is used when the strike is mounted for use with a left hand opening door and the other solenoid is used when the strike is mounted for use with a right hand opening door. The strike is simply turned upside down to accommodate a door having the opposite hand. The strike has a housing which is reinforced with ribs. The ribs also provide a reduced surface area sliding surface for the gravity fed locking member and thereby permit the locking member to slide up and down with less friction.

Abstract: An electrically-operable strike for locking and unlocking doors. The strike is mounted on a face plate which in turn is mounted on a door jamb. The face plate is provided with mounting apertures which receive adjustment inserts each having an offset aperture for a mounting screw for mounting the strike on the face plate. The face plate also has a tongue extending distally from a lip and a break-off portion at the distal end of the tongue. The strike is first mounted with the offset apertures in a distal position. If the strike does not function properly due to preload, the strike is remounted with the offset apertures in a proximal position and the break-off portion is removed.

Abstract: An electrically-operable strike for locking and unlocking doors. The strike is mounted on a face plate which in turn is mounted on a door jamb. The face plate is provided with mounting apertures which receive adjustment inserts each having an offset aperture for a mounting screw for mounting the strike on the face plate. The face plate also has a tongue extending distally from a lip and a break-off portion at the distal end of the tongue. The strike is first mounted with the offset apertures in a distal position. If the strike does not function properly due to preload, the strike is remounted with the offset apertures in a proximal position and the break-off portion is removed.

Abstract: A surface mounted electric strike which can be installed on a door jamb without cutting the door jamb. The strike employs a simplified locking mechanism whereby two latches are releasably engaged by a single yoke. An electrical solenoid actuates a cam which directly actuates the yoke. The strike can operate in a fail safe mode or a fail secure mode.

Abstract: The present invention teaches a modular telephone jack "system" capable of voice and data applications, which may be relatively flush-mounted within a conventional electrical box or to a surface and which is characterized by the absence of conventional screw terminal technology. A lacing strain relief system facilitates connections in terminal clips which face forward and which are accessible from the front of the system for testing and repair through a snap-off face or cover plate, and facilitates relatively rapid installation and easy access for testing, troubleshooting and wiring. The system may be equipped with combinations of duplex modular jacks of similar outer configuration, such as four, six and eight-conductor versions. The system includes its own "universal" surface-mounting housing or box, where needed.

Abstract: The present invention teaches a modular telephone jack "system" capable of voice and data applications, which may be relatively flush-mounted within a conventional electrical box or to a surface and which is characterized by the absence of conventional screw terminal technology. A unique lacing strain relief system assures solid, undisturbed connections in terminal clips which face forward and which are accessible from the front of the system for testing and repair through a snap-off face or cover plate, and facilitating relatively rapid installation and easy access for testing, troubleshooting and wiring. The system may be equipped with combinations of duplex modular jacks of similar outer configuration, such as four, six and eight-conductor versions. The system includes its own "universal" surface-mounting housing or box, where needed.

Abstract: The present invention teaches a modular telephone jack "system" capable of voice and data applications, which may be relatively flush-mounted within a conventional electrical box or to a surface and which is characterized by the absence of conventional screw terminal technology. A unique lacing strain relief system assures solid, undisturbed connections in terminal clips which face forward and which are accessible from the front of the system for testing and pair through a snap-off face or cover plate, and facilities relatively rapid installation and easy access for testing, troubleshooting and wiring. The system may be equipped with combinations of duplex modular jacks of similar outer configuration, such as four, six and eight-conductor versions. The system includes its own "universal" surface-mounting housing or box, where needed.

Abstract: The present invention teaches a modular telephone jack "system" capable of voice and data applications, which may be relatively flush-mounted within a conventional electrical box or to a surface and which is characterized by the absence of conventional screw terminal technology. A lacing strain relief system facilitates connections in terminal clips which face forward and which are accessible from the front of the system for testing and repair through a snap-off face or cover plate, and facilitates relatively rapid installation and easy access for testing, troubleshooting and wiring. The system may be equipped with combinations of duplex modular jacks of similar outer configurations, such as four, six and eight-conductor versions. The system includes its own "universal" surface-mounting housing of box, where needed.

Abstract: In a ground fault circuit interrupter (GFCI), a pair of flexure arms having moveable contacts disposed thereon are deflected in response to the activation of a solenoid having a moveable core. The core of the solenoid causes a pair of cam actuators which are preferably coupled together by a catcher to rotate. The rotation of the cam actuators causes the deflection of the flexure arms, thereby separating the moveable contacts from the stationary contacts and interrupting the flow of current. The activation of the solenoid is controlled by an electronic module. The electronic module includes a detection circuit which inhibits the solenoid from opening the contacts until there is sufficient electrical energy to insure that the kinetic energy of the solenoid will cause the contacts to latch open. The electromechanical current interrupter and the electronic module are disposed within a housing that can be mounted within a standard electrical receptacle box.

Abstract: In a ground fault circuit interrupter (GFCI), a pair of flexure arms having moveable contacts disposed thereon are deflected in response to the activation of a solenoid having a moveable core. The core of the solenoid causes a pair of cam actuators which are preferably coupled together by a catcher to rotate. The rotation of the cam actuators causes the deflection of the flexure arms, thereby separating the moveable contacts from the stationary contacts and interrupting the flow of current. The activation of the solenoid is controlled by an electronic module. The electromechanical current interrupter and the electronic module are disposed within a housing that can be mounted within a standard electrical receptacle box.