Abstract: An exit device employs a pair of projectable latches which are retractable by depressing a push pad. A latch actuator is mounted between the latches and is actuatable to retract the latches. In one embodiment, the actuator comprises a pair of solenoids controlled from a remote location. In another embodiment, the actuator comprises a motor which is activatable from a remote location for unlatching the door. In addition an exterior operator is mountable and connectable to the latch actuator to provide controlled access from the exterior of the door.

Abstract: An exit device employs a pair of projectable latches which are retractable by depressing a push pad. A latch actuator is mounted between the latches and is actuatable to retract the latches. In one embodiment, the actuator comprises a pair of solenoids controlled from a remote location. In another embodiment, the actuator comprises a motor which is activatable from a remote location for unlatching the door. In addition an exterior operator is mountable and connectable to the latch actuator to provide controlled access from the exterior of the door.

Abstract: A high security exit system employs a door latching assembly which cooperates with a frame latching assembly mounted to the door frame. The frame latch is mounted for pivotal movement and has a latching surface movable toward a projected position. When the door is closed, the door and frame latching surfaces are projected and engaged in opposed surface-to-surface orientation. A direction of force resulting from an attempt to forcibly disengage the latching surfaces is directed through or close to the pivot access of the door latch. An override assembly is provided to force the frame latch to a retracted position when the door is opened. Auxiliary latch assemblies and corresponding frame latch assemblies are provided for coordinated latching and retraction when the push bar retracts the primary door latch. Dual latch assemblies are also provided. A solenoid mechanism may be employed to dog the push bar.

Abstract: An electrically controlled door lock device with a lockset with an inside handle, an outside handle, a spring loaded continuous spindle, biased to maintained a lockset's latch in a projected position and connecting the lockset and the outside handle, a first half and a second half of a clutch connecting the continuous spindle and the inside handle with a spring maintaining the second half of the clutch in predetermined position relative to the first half of the clutch. There is also a mechanical means blocking the first half of the clutch from rotation and electromechanical means controlling the blocking means, the mechanical means built into the second half of the clutch, allowing the second half of the clutch a predetermined degree of free rotation before it engages with the first half of the clutch, the mechanical means built into second half of the clutch, mechanically inhibiting the blocking means.

Abstract: Systems, devices, and methods related to information delivery systems which use a computer network. In one embodiment, an information delivery system application accesses a script file which contains first data identifying a first networked information source. The application communicates with the first networked information source to access second data stored at the first networked information source. The second data relates to information items stored at a second networked information source and at least a portion of this second data is presented to an end user using a non-obtrusive graphical user interface. Using the graphical user interface, the user can activate any portion of the second data presented. When this is activated, the end user is directed to the information item corresponding to the activated portion. The graphical user interface is provided with independent and separate sections, each of which corresponds to a different networked information source.

Abstract: An exit bar for securing a door has a housing adapted for mounting to a door. A push pad for receiving a push force is mounted to the housing. A latch extends from the housing to releasably latch the door to which the exit bar is mounted. A link system links the push pad to the latch so that a push force exerted on the push pad releases the latch. An electromagnetic lock disposed in the housing locks the link system to prevent releasing of the latch. The electromagnetic lock employs an electromagnet and a movable armature to lock the link system. The exit bar further delays unlocking the link system for a preestablished delay time after the push pad has been pushed.

Abstract: A tensionable mine roof cable bolt having a resin grouted upper portion and a mechanically anchored lower portion. The lower portion includes a shaft which is swaged to the cable and accepts a mechanical anchor. The cable bolt is rotated during installation in a mine roof to mix resin and simultaneously engage the mechanical anchor with the rock. A drivehead attached to the lower end of the cable fails upon tensioning of the bolt to a predetermined load.

Abstract: An exit bar for securing a door has a housing adapted for mounting to a door. A push pad for receiving a push force is mounted to the housing. A latch extends from the housing to releasably latch the door to which the exit bar is mounted. A link system links the push pad to the latch so that a push force exerted on the push pad releases the latch. An electromagnetic lock disposed in the housing locks the link system to prevent releasing of the latch. The electromagnetic lock employs an electromagnet and a movable armature to lock the link system. The exit bar further delays unlocking the link system for a preestablished delay time after the push pad has been pushed.

Abstract: The present invention provides a cable driving wrench assembly for thrusting and rotating a multi-strand cable mine rock anchor. The wrench assembly includes a wrench body having an open interior and a plurality of apertures in the wrench body extending into the open interior. Each aperture is adapted to receive an individual strand of the multi-strand cable when the individual strand has been separated from the remaining strands of the cable at least at one end of the cable. The open interior of the wrench body is adapted to receive one end of the cable through the plurality of apertures. A mechanism for thrusting and rotating the wrench body is attached thereto. The present invention additionally includes a cable opening tool for opening the strands of a multi-strand cable. The cable opening tool includes a rotatable tool body and a socket formed in the tool body.

Abstract: A method of anchoring a spirally wound multi-strand cable in a borehole by using resinous material intermixed with the cable strands upon gripping the cable strands at one end to unwind the strands initially for forcing the cable into a borehole and for rewinding the strands to restore the cable to its spirally wound condition, and apparatus for applying cable rotating and thrusting reaction for securing retention of the cable in a borehole with a resinous anchor material.

Abstract: A cable truss system for providing support for underground drifts in geologic structure in a first stage from anchor members secured in the geologic structure for leaving end portions in the drift to which a first system of supports are secured to engage on the geologic structure disturbed by the drift formation, and cable truss members connected to the first system of supports for establishing a second stage of support for the geologic structure disturbed by the drift formation.

Abstract: A cable bolt mine roof crib for support and stabilization of roof rocks employing a series of cable bolts and/or cable members through a cribbing frame for actively supporting the roof and area surrounding an underground opening. The support imposes a restraint on geologic movement of the roof by the placement of rock anchors on the ends of cables at depth through the rock mass. The anchor portions of the cable bolts are placed beyond the zone of failure that would normally take place around an underground opening. The roof crib provides a bearing area for the roof rock which limits deformation and offers support by suspension to maintain interlock of rock fragments of the roof of the underground opening. The strength and length of cable bolts can be adjusted to fit initial tectonic load conditions and subsequent loads placed upon the opening by adjacent mining.

Abstract: A multiple cable rock anchor comprising an assembly of a plurality of individual elongated cables having an attachment for joining a first end of each cable in association for common movement, or wrapped to loosely hold them together without restricting relative sliding movement in bending. The assembly of multiple cable rock anchor being manipulated by bending for installation in a borehole formed in a geologic structure where there is a drift dimension less than the desired length dimension of the elongated cables, thereby forcing the cables to be bent upon being inserted in the borehole. Further, the assembly of cables have different strengths, dimensions and lengths.

Abstract: A yieldable grout compactor for a cable roof support fixture adapted to be insertable in a uniform diameter borehole or in a stepped borehole in which the grout cartridge and compactor are insertable so as to have the cable perform the piercing and mixing function with respect to the grout material while the compactor is slidable on the cable caused by a sufficient degree of force to permit the grout to surround and anchor the cable. Compactor sleeves are sized with respect to the axial cable length and the internal and external diameters are sized to yieldably permit fixture installation and grout securement of the cable in a manner to obtain a secure anchor for the cable in the back of the borehole.

Abstract: A cable attachment assembly having an anchor mechanism for gripping a tension member anchored in a bore hole in a mine roof, and a roof plate mounted on the anchor mechanism in positions for observing the support being offered to the mine roof, or the yielding response of the roof plate on the anchor mechanism, or for monitoring the load-yield relationship of the anchor mechanism relative to the tension member.

Abstract: An exit door security system which employs an electromagnet and armature to lock an exit door comprises an electromagnetic housing and a frame assembly. The housing is pivotally mounted to the frame assembly. An attempt to exit the door causes the housing to pivot to thereby actuate a switch. The lock is automatically released after a pre-established time delay. An alarm at the door may also be actuated by the switch. The electronic circuitry is configured to allow for immediate authorized egress and to implement an immediate safety release of the lock. The lock may be operated in either a normally locked or normally unlocked mode.

Abstract: Dynamic rock stabilization apparatus in the form of an anchor fixture for use with a roof plate in which the fixture has an anchor rod formed with a surface configuration extending from a lead-in end to the opposite headed end for at least a part of the length of the rod, and a hollow body providing a wall of formable and compressible material having a length less than the depth of a bore hole in the rock structure into which it is to be placed between the rod and the surface of the bore hole, the body engaging the surface configuration of the rod to effect a locking engagement with the rod such that when assembled in a bore hole the body wall has a thickness sufficient to be compressed between the rod surface configuration which has a diameter less than the bore hole and the bore hole surface, and to apply dynamic forces through the rock as a result of the compressibility of the body.

Abstract: A manual power assist control employs a magnetic encoder which is mounted to a shaft of the door operator. The encoder generates pulse trains which are indicative of an attempt to open the door in a given direction. The pulses are processed to generate a signal for opening the doors in the event a manual attempt to open the doors is detected.

Abstract: .[.Anchor fixture for dynamically stabilizing rock structure comprising a rock support mounted in a bore hole and cooperating with formable means placed in the bore hole to generate tension in the support and to exert compression in the rock structure for dynamically supporting the rock structure upon insertion of the rock support and rapidly developing radial loading forces in the rock and beyond the near boundary of the bore hole..]. .Iadd.

Abstract: An exit door security system which employs an electromagnet and armature to lock an exit door comprises an electromagnetic housing and a frame assembly. The housing is pivotally mounted to the frame assembly. An attempt to exit the door causes the housing to pivot to thereby actuate a switch. The lock is automatically released after a pre-established time delay. An alarm at the door may also be actuated by the switch. The electronic circuitry is configured to allow for immediate authorized egress and to implement an immediate safety release of the lock. The lock may be operated in either a normally locked or normally unlocked mode.