Electric latch retraction push-bar device
AssigneeSecurity Door Controls
InventorsArthur V. Geringer, David A. Geringer
Life of this patent
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Abstract
An electric latch retraction device comprising a housing for receiving a plurality of internal components of the electric latch retraction device. An actuator mechanism is included in the housing, the actuator mechanism is adapted to impart linear movement on a latch, such that the latch is retracted towards the housing. A holding mechanism is also included in the housing, the holding mechanism holds the latch in a fully retracted position when the actuator is off. Other embodiments can comprise internal conversion mechanisms to convert the motor's linear motion to a different directional motion, with the different directional motion retracting the latch.
Claims25
An electric latch retraction device comprising:
- a housing containing an electric motor, wherein said electric motor is adapted to impart linear movement in a first direction;
- a motion conversion mechanism arranged to convert said linear movement in said first direction to movement in a second direction, wherein said first direction is different from said second direction, wherein said conversion mechanism is arranged to retract a latch towards said housing;
- a holding mechanism mounted in said housing, said holding mechanism adapted to hold said latch in a fully retracted position with a holding strength sufficient to hold said latch in its retracted position with said electric motor off;
- and
- an armature adapted to extend from said electric motor and engage said holding mechanism when said latch is fully retracted.
An electric latch retraction device comprising:
- a housing containing a plurality of internal components of said electric latch retraction device, said internal components comprising an electrical actuator mechanism adapted to impart linear movement in a first direction in response to an electrical signal;
- said internal components further comprising a magnet mounted in said housing;
- said internal components further comprising a motion conversion mechanism arranged to convert said linear movement in said first direction to movement in a second direction, wherein said first direction is different from said second direction;
- a latch wherein said different directional movement is in a direction to retract said latch, said magnet adapted to hold said internal components in a position with said latch retracted;
- and
- an armature adapted to extend from said electric motor and engage said magnet when said latch is fully retracted.
Dependencies are inferred from the claim text.