US 12,410,636 B2Granted

Exit device coordination mechanisms

AssigneeSchlage Lock Company LLC

InventorsAaron P. McKibben, Matthew S. Graham, Gregory Musselman

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Abstract

An exemplary exit device includes a pushbar assembly, a remote latching assembly, and a coordination mechanism. The pushbar assembly includes a latch control assembly, and the coordination mechanism biases the latch control assembly toward its actuated state. The remote latching assembly includes first and second latch mechanisms, and the latch control assembly is operable to actuate the latch mechanisms. Each of the latch mechanisms at least selectively urges the latch control assembly toward its deactuated state such that the remote latching assembly exerts a variable deactuating force on the latch control assembly. The coordination mechanism selectively retains the latch control assembly in its actuated state, thereby selectively retaining at least one of the latch mechanisms in a corresponding actuated state. When the deactuating force exceeds a threshold force value, the latch control assembly and the latch mechanisms return to the deactuated states thereof.

Claims20

Dependent claims

A pushbar assembly, comprising:

a drive assembly configured for movement between a first actuated state and a first deactuated state, and wherein the drive assembly includes a pushbar operable to transition the drive assembly between the first actuated state and the first deactuated state;
a latch control assembly configured for movement between a second actuated state and a second deactuated state;
a lost motion connection operably connecting the drive assembly and the latch control assembly, wherein the lost motion connection is configured to move the latch control assembly from the second deactuated state to the second actuated state in response to movement of the drive assembly from the first deactuated state to the first actuated state, and wherein the lost motion connection is further configured to permit the latch control assembly to remain in the second actuated state when the drive assembly moves from the first actuated state to the second deactuated state;
and
a coordination mechanism engaged with the latch control assembly and urging the latch control assembly toward the second actuated state with an actuating input force, and wherein the actuating input force is independent of the first actuated state and the first deactuated state.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/512,466Filed 17 Nov 2023 · continuation
Priority: 15 May 2018
Published: US 2024/0344365 A117 Oct 2024
Granted: 9 Sep 2025
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

E05B 65/1013
Of the vertical rod type: trigger means for holding the bolt in the retracted position and releasing the bolt when the door is closed
E05B 53/003
Operation or control of locks by mechanical transmissions, e.g. from a distance: flexible
E05B 65/1053
Panic bars: sliding towards and away form the door
E05B 65/1093
For panic or emergency doors: dogging means for holding the actuation means, e.g. the actuating handle

Family

Application62/671,518Us provisional application · filed 15 May 2018
Application16/042,214Parent of this continuation · filed 23 Jul 2018
US 2024/0344365 A1Pre-grant publication · published 17 Oct 2024
US 2019/0352937 A1Published application
US 12,410,636 B2This patent

From the US filing history. Foreign family members aren’t listed.