Multiple access door lock mechanism
AssigneeAdams Rite Manufacturing Co.
InventorAlan K. Uyeda
Life of this patent
Estimating the term…
Abstract
In combination, a door, two latches at an edge of the door, and door latch operating components at opposite sides of the door; displaceable structure in the door having a position blocking movement of the latches, first mechanism responsive to displacement of one of the components for displacing the structure from blocking position to allow movement of the latches, for door opening; and electrically operable actuating means for effecting displacement of the structure from blocking position to allow movement of the latches, for door opening.
Claims27
A door latch system configured for being disposed within a door for selectively locking the door relative to a door frame, the system comprising:
- a latch assembly including a housing and at least one latch movable between a locked position and an unlocked position;
- a slider directly engagable with the latch assembly and configured for moving between a blocking position and an unblocking position, the blocking position preventing movement of the latch assembly from the locked position to the unlocked position, and the unblocking position allowing movement of the latch assembly between the locked position and the unlocked position;
- a first actuator configured to operatively engage the slider;
- and
- a second actuator configured to operatively engage the slider,
- wherein the first actuator and the second actuator are independently operable to displace the slider from the blocking position to the unblocking position thereby allowing the latch assembly to move from the locked position to the unlocked position.
A door latch system configured for being disposed within a door for selectively locking the door relative to a door frame, the system comprising:
- a latch assembly including a housing and at least one latch movable between a locked position and an unlocked position;
- a slider directly engagable with the latch assembly and configured for moving between a blocking position and an unblocking position, the blocking position preventing movement of the latch assembly from the locked position to the unlocked position, and the unblocking position allowing movement of the latch assembly between the locked position and the unlocked position;
- a pull lever configured for being pivotally coupled with the door and movable between a first position and a second position, the pull lever operatively connected to the slider, wherein the pull lever is disposed in the first position when the slider is in the blocking position, and wherein the pull lever is disposed in the second position when the slider is in the unblocking position;
- a first actuator configured to operatively engage the slider to move the slider to the unblocking position;
- and
- a second actuator configured to operatively engage the pull lever when in the first position to move the slider to the unblocking position,
- wherein the first actuator and the second actuator are independently operable to displace the slider from the blocking position to the unblocking position thereby allowing the latch assembly to move from the locked position to the unlocked position.
Dependencies are inferred from the claim text.