Patent ID: 7497486
Filing Date: 2009-03-03
Classification: E05B,Y10T

Abstract:
1. A mortise lock for a door including a chassis, a latch bolt supported by the chassis to move relative to the chassis between a latched position and an unlatched position, a first door handle, a first hub coupled to the first door handle, a second door handle, a second hub coupled to the second door handle, a shuttle supported by the chassis to move between an enabled position and a disabled position, a first toggle mounted on the shuttle, the first toggle being moveable relative to the shuttle between a first position engaging the first hub to block an input from the first door handle from moving the latch bolt to the unlatched position and a second position permitting the input to the first door handle to move the latch bolt to the unlatched position, a second toggle mounted on the shuttle, the second toggle being moveable relative to the shuttle between a first position engaging the second hub to block an input from the second door handle from moving the latch bolt to the unlatched position and a second position permitting the input to the second door handle to move the latch bolt to the unlatched position, the first and second toggles being spaced apart from the first and second hubs when in the first position and the shuttle is in the disabled position, a control member supported by the chassis and moveable between a first position in direct contact with the shuttle holding the shuttle in the disabled position, a second position in contact with the shuttle holding the shuttle in the enabled position, and a third position, and a shuttle toggle supported by the chassis and moveable relative to the chassis when the control member is in the third position, the shuttle toggle moveable between a first position in contact with the shuttle holding the shuttle in the enabled position and a second position holding the shuttle in the disabled position.