Patent ID: 8250888
Filing Date: 2012-08-28
Classification: E05B,Y10T

Abstract:
1. A door knob assembly having an outer knob connected to an inner knob, wherein the door knob assembly is operable to actuate a latching mechanism so as to lock and unlock the door from a door frame, the door knob assembly comprising: a spindle interconnecting the outer knob to the inner knob, wherein the inner knob and outer knob are operatively attached to the spindle; a rosette having an indexed portion, the rosette fixedly mounted to the door and disposed between the inner knob and the outer knob; an access device having an input operable to receive a code, the access device also having a cam assembly, the access device operable to position the cam assembly between a first cam position and a second cam position when the proper code is received; a latch assembly in communication with the spindle, the latch assembly including a latching member, wherein the spindle is operable to move the latching member between a first position and a second position, and wherein in the first position the latching member is positioned so as to be free of the door frame and wherein in the second position the latch member is positioned so as to lockingly engage the door frame; a lock assembly, having a locking plate and a biasing member, the locking plate having a locking member, and wherein the biasing member urges a portion of the locking plate against the cam assembly, wherein in the first cam position, the cam assembly is positioned to urge the locking member into a locking engagement with the indexed portion of the rosette so as to fix the outer knob with respect to the rosette, and wherein in the second cam position, the biasing member is operable urge a portion of the lock assembly against the cam assembly so as to displace the locking member with respect to the indexed portion of the rosette and allow the outer knob to turn the spindle and actuate the latch assembly.