A plug assembly including a plug, a sidebar movably mounted on the plug, and a plurality of rack pins seated in the plug. The sidebar is biased to an outer position in which the sidebar extends beyond an outer surface of the plug. Each rack pin includes a key-following leg and a sidebar-engaging leg. The sidebar-engaging leg includes at least one true gate. When a true gate of each rack pin is aligned with the sidebar, the sidebar is free to move radially inward to an inner position.

A rotating cylinder applied to a lock is disclosed. The rotating cylinder is configured to guide a transmission element of the lock and defining a central axis. The rotating cylinder includes an opening, an inner wall, a first guiding structure, a second guiding structure and an engaging groove. The inner wall is communicated with the opening. The first guiding structure is formed on the inner wall and includes a first curved surface. The second guiding structure is formed on the inner wall and opposite to the first guiding structure. The second guiding structure includes a first curved surface. The engaging groove is formed between the first guiding structure and the second guiding structure. The first curved surface of the first guiding structure and the first curved surface of the second guiding structure are closer to the opening than the engaging groove.

A piezoelectric energy harvester system for collecting kinetic energy is provided, wherein the kinetic energy is converted into electrical energy, and wherein at least a portion of the converted electrical energy is utilized to operate a load. The system comprises an energy input portion and an energy harvesting portion. The energy input portion includes an input member configured to be actionable by an outside force. The energy harvesting portion includes a capture member, a sprocket portion, and a piezoelectric energy harvester. The capture member is adapted for receiving mechanical input from the input member. The sprocket portion is disposed for movement with the capture member. The sprocket portion includes at least one radially disposed sprocket actuator configured for making contact with and exciting the piezoelectric energy harvester. The piezoelectric energy harvester is excited by the contact to produce the kinetic energy.

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.

A transmission mechanism applied to a lock and for controlling the lock to switch between an unlocked state and a locked state. The lock includes a first handle set including a first cover plate which includes a first fitting portion. The transmission mechanism includes a transmission element and a moving component. The transmission element is connected to the first handle set in a manner that the transmission element is incapable of moving along a rotating axis and has an abutting portion. The moving component is disposed on the transmission element in a manner that the moving component is capable of moving along the rotating axis and includes a first engaging groove, a second engaging groove and a second fitting portion. When the transmission element is operated to rotate, the abutting portion is capable of switching between the first engaging groove and the second engaging groove.

A door handle set includes a handle assembly having a primary lock and having a handle rotatable about a primary rotational axis. A latch bolt assembly has a latch bolt. The latch bolt assembly is operatively coupled to the handle assembly, wherein a rotation of the handle results in a linear translation of the latch bolt. A supplemental lock has a second axis parallel to, and spaced apart from, the primary rotational axis. The supplemental lock has an actuator that is operable relative to the second axis. The supplemental lock is configured to selectively block the rotation of the handle regardless of the locking state of the primary lock.

An example lock apparatus generally includes a housing, a latch spindle, a drive spindle, an electronic lock mechanism, and an override mechanism. The latch spindle is mounted for rotation relative to the housing, and is operable to actuate a latch mechanism. The drive spindle is mounted for rotation relative to the housing. The electronic lock mechanism is disposed in the housing, and is operable to selectively couple the drive spindle with the latch spindle. The override mechanism is disposed in the drive spindle, and is operable to selectively couple the drive spindle with the latch spindle.

A button assembly for a door lock may include a button and a shank. The button may be toollessly couplable to the shank to allow force transmission between the button and the shank. The button may transfer linear force and torque along a longitudinal axis of the button to the shank to allow a state of an associated lock body to be changed.

A handle assembly includes a removable handle positioned over a sleeve. The handle assembly includes a catch positioned within the sleeve, and when extended, the catch prevents relative movement between the handle and the sleeve. The handle assembly includes a spindle positioned within the sleeve. The spindle has a longitudinal axis. The spindle is rotatable between a locked position and an unlocked position. When in the locked position, the sleeve is not rotatable, and when in the unlocked position, the sleeve is rotatable. The handle assembly includes a support structure that is configured to support the spindle. The support structure is in a fixed rotational relationship with respect to the handle. When the catch is in an extended position and the spindle is in the locked position, deflection of the spindle in a direction transverse to the longitudinal axis is resisted by way of the support structure.

An indicator lock has a rotatable indicator which rotates with the depression of a button on the other side of the lock which is used to simultaneously cause a door to be locked and rotate the indicator. This is accomplished by way of a shaft which rotationally moves with the the locking button. The locking button is pressed inwards and rotates as it is pressed inwards due to a channel which is diagonally disposed relative to the direction the button is pressed. A pin extending out from a shaft of the button is in the diagonal channel and a spring adds tension to push the button and display back to the unlocked configuration. This tension is overcome when the button is pressed and the pin enters into a section of the channel which is parallel to the shaft and direction of button press.