Oak Security Group LLC

Chung-Liang A Lin

Roger Keith Russell

Mark A Shumaker

An active noise cancelling cord contains: a plug including a ground-wire conductor, a live-wire conductor, and a neutral-wire conductor; a socket including a protrusion in which a first receiving orifice, a second receiving orifice and a third receiving orifice are defined; and a noise reduction mode. The body is connected with a plug and a socket, and a shell is located between the plug and the socket. The conductive set includes a ground wire electrically connected with a ground-wire conductor and a first receiving orifice, a live wire electrically connected with a live-wire conductor and a second receiving orifice, a neutral wire electrically connected with a neutral-wire conductor and a third receiving orifice, a plug anti-noise wire electrically connected with a live-wire conductor, and the noise reduction mode, and a socket anti-noise wire electrically connected with the second receiving orifice and the noise reduction mode.

Active noise cancelling cord

A door lock includes a latch driving device having a thumb turn that can be switched between a locking position not permitting movement of a latch to an unlatching position when an outer handle is pivoted and an unlocking position permitting movement of the latch to unlatching position when the outer handle is pivoted. The thumb turn includes an actuator controlling a switch to a conductive state or a non-conductive state. When the thumb turn is in the locking position, the switch is in the conductive state, and a lighting element controlled by the switch generates light transmitting through the first lid. When the thumb turn is in the unlocking position, the switch is in the non-conductive state, and the lighting element does not generate light. Thus, the locking or unlocking state of the door lock can be identified by sight.

Door lock capable of showing locking or unlocking state

A locking mechanism is provided for a portal closure that includes a first side, and a second side The portal closure including a latch movable into and out of engagement with a latch receiver and a latch driving device coupled to the latch for moving the latch into and out of engagement with the latch receiver The latch driving device includes a controllable lock member movable between a locked position where the latch is fixedly positioned in the latch receiver and an unlocked position where the latch is capable of being disengaged from the latch receiver and a second side latch driving device mover disposed on the second side of the portal closure. The locking mechanism includes a first side latch driving device mover disposed on the first side of the portal closures, and coupled to the latch driving device for moving the latch driving device to cause the latch to move into and out of engagement with the latch receiver. A signal generator is provided for generating a human detectable signal. A lock actuator is coupled to the controllable lock member for moving the locking mechanism between a first normal position wherein the second side lock driving device is capable of being moved between an unlocked position to permit the latch to be disengaged from the latch receiver and a locked position where the latch is prevented from being disengaged from the latch receiver; and a second emergency position wherein the second side lock driving device is in the locked position, and the signal generator is actuated to generate a human detectable signal. A power source is provided for powering the signal generator when the locking mechanism is in the second emergency position. A switch is coupled between the power source and the signal generator for controlling the flow of current between the power source and the signal generator.

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Tianan, Taiwan

Chung-Liang A Lin