Exit-delaying mechanism, for a panic exit device
AssigneeVon Duprin, Inc.
InventorsMarlin Austin, Michael Cain, Paul J. Haeck
Life of this patent
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Abstract
A housing mounted to the frame of a panic exit device confines a translatable limb, and a pivotable arm. The limb has a lobe which obstructs the arm to prevent its pivoting and, as a consequence, the arm blocks the latchbolt linkage of the device to prevent unlatching. A rod joined to a time-delayed-operative solenoid is coupled to the limb for displacing the limb from arm-pivoting obstruction, to allow the arm to unblock the latchbolt linkage, whereby the latchbolt can unlatch following the time delayed deenergization of the solenoid. Under normal conditions, the solenoid is energized to prohibit immediate unlatching.
Claims9
For a panic exit device which has a frame, a latchbolt mounted to said frame for movement, relative to said frame, in a first direction, between a first, latched position, and a second, unlatched position, and a manually-actuated linkage joined to said latchbolt and mounted to said frame for movement in said first direction to effect displacement of said latchbolt from said first position to said second position, exit-delaying mechanism for said device, comprising:
- first means pivotably and translatably mounted to said frame and operative (a) in a first mode for obstructing, and (b) in a second mode for permitting movement of said linkage, to allow linkage-displacement of said latchbolt from said first position to said second position;
- and
- second means coupled to said frame and to said first means operative, in response to, and with a specific time delay following, manual actuation of said linkage, for changing said first means from said first operative mode to said second operative mode thereof;
- wherein
- said first means comprises linkage-movement blocking means movable in said first direction, and a second, opposite direction, and having means, responsive to movement of said blocking means in said second direction, for permitting movement of said linkage.
For a panic exit device which has a frame, a latchbolt mounted to said frame for movement, relative to said frame, in a first direction, between a first, latched position, and a second, unlatched position, and a manually-actuated linkage joined to said latchbolt and movably mounted to said frame for moving said latchbolt from said first position to said second position, exit-delaying mechanism for said device, comprising:
- first means pivotably and translatably mounted to said frame and operative (a) in a first mode for obstructing, and (b) in a second mode for permitting movement of said linkage, to allow linkage-displacement of said latchbolt from said first position to said second position;
- and
- second means coupled to said frame and to said first means operative, in response to, and with a specific time delay following, manual actuation of said linkage, for changing said first means from said first operative mode to said second operative mode thereof;
- wherein
- said first means comprises a housing fixed to said frame in adjacency to said linkage, an arm pivotably journalled in said housing, and a limb translatable in said housing;
- said linkage has means for engaging said arm and causing pivotable movement of said arm;
- said housing has a trackway formed therein;
- and
- said limb has rails formed thereon which slidably engage said trackway;
- and further including
- rolling elements interposed between said limb and said housing facilitating low friction movement of said limb, translatably, in said housing.
Dependencies are inferred from the claim text.