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US 11,898,373 B2Granted
Assembly for exit device
Assigneedormakaba USA Inc.
InventorsJamison D. Woodley, Jason C. Clifford, Xiaohui Yan, Can Zhang
Life of this patent
Estimating the term…
Abstract
A motorized latch retraction system for transitioning a latch of an exit device from a latched position to an unlatched position is provided. The motorized latch retraction system includes a lock indicator indicating the latched or unlatched position of the latch and a floating motor.
Claims18
A motorized latch retraction system for transitioning a latch of an exit device from a latched position to an unlatched position, the motorized latch retraction system comprising:
- a retraction assembly including a guide structure configured to be coupled to the exit device, the retraction assembly having a retraction arm operably coupled to the latch of the exit device, and the retraction arm moveable relative to the guide structure between a first position corresponding to the latched position of the latch and a second position corresponding to the unlatched position of the latch, wherein movement of the retraction arm from the first position to the second position effects movement of the latch from the latched position to the unlatched position;
- and
- a motor assembly including:
- a floating motor configured for movement relative to the guide structure;
- an actuator operably engaged with and extending linearly from the floating motor and actuatable by the floating motor, the actuator operably coupled to the retraction arm to actuate the retraction arm and the latch;
- a restrictor fixedly positioned relative to the guide structure of the retraction assembly, the restrictor defining a floating restrictor space, the floating motor positioned within the floating restrictor space, the restrictor having guide surfaces for limiting rotational or linear movement of the motor in a first predefined dimension;
- and
- a resilient restraint operably coupled to the floating motor and operable to selectively restrain the floating motor in a second predefined dimension when the retraction arm is not in the second position and to selectively permit the floating motor to move in the second predefined dimension within the restrictor space when the retraction arm is in the second position;
- wherein the configuration of the floating motor, the actuator, and the restrictor is such that when the floating motor actuates the actuator, the floating motor is operable to linearly translate within the restrictor space when the retraction arm is in the second position.
6 more elements
A motorized latch retraction system with mechanical dogging for retaining a latch of an exit device in an unlatched position, the motorized latch retraction system comprising:
- a retraction assembly including a guide structure configured to be coupled to the exit device, the retraction assembly having a retraction arm operably coupled to the latch of the exit device, and the retraction arm moveable relative to the guide structure between an extended position corresponding to the latched position of the latch and a retracted position corresponding to the unlatched position of the latch;
- a floating motor configured for movement relative to the guide structure, the floating motor operably coupled to the retraction arm, the floating motor including an actuation member extending linearly therefrom, the actuation member operably coupled to the retraction arm and operable to transition the retraction arm from the extended position to the retracted position;
- and
- a mechanical dogging member moveably coupled to the retraction arm, the dogging member operable to be positioned in an active position and a passive position, the dogging member limiting movement of the retraction arm relative to the retraction guide when in the active position.
1 more element
A motorized latch retraction system for transitioning a latch of an exit device from a latched position to an unlatched position, the motorized latch retraction system comprising:
- a retraction assembly including a guide structure configured to be coupled to the exit device, the retraction assembly having a retraction arm operably coupled to the latch of the exit device, and the retraction arm moveable relative to the guide structure between a first position corresponding to the latched position of the latch and a second position corresponding to the unlatched position of the latch;
- a motor assembly including:
- a floating motor configured for movement relative to the guide structure;
- an actuator operably engaged with and extending linearly from the floating motor and actuatable by the motor, the actuator operably coupled to the retraction arm to actuate the retraction arm and the latch between the latched position and the unlatched position;
- and
- a lock indicator having a visible lock indicator and a visible unlock indicator, the lock indicator operably coupled to the retraction arm such that actuation of the retraction arm actuates the lock indicator, actuation of the retraction arm and the latch to the latched position corresponding to actuation of the lock indicator to a lock indicator position in which the visible lock indicator is viewable and the visible unlock indicator is obscured from view, actuation of the retraction arm and the latch to the unlatched position corresponding to actuation of the lock indicator to an unlock indicator position in which the visible unlock indicator is viewable and the visible lock indicator is obscured from view.
3 more elements
Dependencies are inferred from the claim text.