Exit device
AssigneeVon Duprin, Inc.
InventorDavid M. Schacht
Life of this patent
Estimating the term…
Abstract
An exit device includes a housing, a latchbolt coupled to and movable relative to the housing, and an auxiliary bolt coupled to the housing and movable relative to the latchbolt. The exit device also includes a deadlock link coupled to the housing and movable relative to the latchbolt and the auxiliary bolt between a first position, in which the deadlock link allows movement of the latchbolt relative to the housing, and a second position, in which the deadlock link inhibits movement of the latchbolt relative to the housing. The exit device further includes a spring biasing the auxiliary bolt into engagement with a portion of the deadlock link to move the deadlock link toward the first position.
Claims24
An exit device comprising:
- a housing;
- a latchbolt coupled to and movable relative to the housing;
- an auxiliary bolt coupled to the housing and movable relative to the latchbolt;
- a deadlock link coupled to the housing and movable relative to the latchbolt and the auxiliary bolt between a first position, in which the deadlock link allows movement of the latchbolt relative to the housing, and a second position, in which the deadlock link inhibits movement of the latchbolt relative to the housing;
- a spring biasing the auxiliary bolt into engagement with a portion of the deadlock link to move the deadlock link toward the first position;
- and
- a bracket coupled to the auxiliary bolt and the deadlock link, wherein the spring biases the bracket into engagement with a portion of the deadlock link to move the deadlock link toward the second position.
An exit device comprising:
- a housing;
- a latchbolt coupled to and movable relative to the housing;
- an auxiliary bolt coupled to the housing and movable relative to the latchbolt;
- a deadlock link coupled to the housing and movable relative to the latchbolt and the auxiliary bolt between a first position, in which the deadlock link allows movement of the latchbolt relative to the housing, and a second position, in which the deadlock link inhibits movement of the latchbolt relative to the housing;
- a bracket engaging a portion of the deadlock link to move the deadlock link toward the second position, the bracket configured to melt at relatively high temperatures;
- and
- a firedog link supported by the bracket such that, when the bracket melts, the firedog link moves relative to the deadlock link to inhibit movement of the deadlock link from the second position to the first position.
An exit device comprising:
- a housing;
- a latchbolt coupled to and movable relative to the housing;
- a pushbar coupled to the latchbolt, the pushbar actuable to move the latchbolt to a retracted position relative to the housing;
- an auxiliary bolt coupled to the housing and movable relative to the latchbolt;
- a deadlock link coupled to the housing and movable relative to the latchbolt and the auxiliary bolt between a first position, in which the deadlock link allows movement of the latchbolt relative to the housing, and a second position, in which the deadlock link inhibits movement of the latchbolt relative to the housing;
- a bracket coupled to the auxiliary bolt and the deadlock link, the bracket configured to melt at relatively high temperatures;
- a spring positioned between the auxiliary bolt and the bracket, the spring biasing the auxiliary bolt into engagement with a portion of the deadlock link to move the deadlock link toward the first position and biasing the bracket into engagement with another portion of the deadlock link to move the deadlock link toward the second position;
- and
- a firedog link supported by the bracket such that, when the bracket melts, the firedog link moves relative to the deadlock link to inhibit movement of the deadlock link from the second position to the first position.
Dependencies are inferred from the claim text.