A ground wire guidance system for guiding a robotic vehicle through a doorway in a barrier. The system includes a ground wire loop arranged to pass though the doorway in two directions. Plural wires are switched as the loop passes through the doorway such that the pairs of wires conducting are spaced apart, or shielded, such that the robotic vehicle can reliably navigate through a relatively narrow doorway, while one of the wires passes through a central portion of the doorway.

A latch for securing a component to a track in a base of air cargo equipment, such as a pallet or the floor of a unit load device. The latch includes a rigid support configured to be attached at the bottom edge of the component. The latch also includes a handle. The handle rotates relative to the support between an open position and a closed position. The handle uses a rotationally tapered locking cam to secure the component to the track. In one embodiment, the component is a door, such as a fabric curtain.

Aspects of a symmetric coherent optical mixer are described. In one example, the coherent optical mixer includes a group of symmetric MMI couplers and a group of symmetric bend waveguides optically coupled between the MMI couplers. The group of symmetric MMI couplers can include an input for a local light reference signal, an input for a modulated light signal, and outputs for detection of data from the modulated light signal. The group of symmetric MMI couplers can include four MMI couplers, each of which comprises a 22 MMI coupler of symmetric dimension. The group of symmetric bend waveguides can include a symmetric layout of four 90 bend waveguides optically coupled between the four MMI couplers. The coherent optical mixer, which can be implemented as a Silicon Photonics (SiPh) device, provides better performance as a 90 degree optical hybrid than prior mixer devices due to its symmetric layout.

A locking apparatus for a rollup door, comprising a striker member, latch assembly including a latch, a release lever, a trigger, a cam and a solenoid. The latch assembly may also include a limit switch for detecting when the latch assembly is in an unlocked position. The locking apparatus can be electronically unlocked or it can be unlocked manually by a user by actuating the solenoid which causes the latch to release the locked striker member.

The invention is a locking device for securing roll-up doors on tractor trailers and other cargo vehicles. The working parts of the invention are enclosed inside a housing and the invention employs a dual catch-pin system which allows the door to be locked shut with minimal play between the bottom of the door and loading deck of the cargo vehicle. This, the invention is resistant to attempts to slide pry bars or jacks under the door in force breach attempts.

A storage lock for a storage door, the lock comprising a lock housing for mounting to the storage door or a storage frame supporting the door; and a lock mechanism arranged within the lock housing, the lock mechanism comprising a latch selectively operable between a locked position in which the latch is extended to engage with the other of the storage door and storage frame to block against opening of the storage door, and an unlocked position in which the latch is retracted to disengage from the other of the storage door and storage frame to allow the storage door to be opened for access to storage, and a latch control system selectively operable between a restricted position to block against operation of the latch out from the locked position, and an unrestricted position to permit operation of the latch out from the locked position to the unlocked position.

A multifunction securing mechanism for a compartment closable by a door and includes a key cylinder, a latching assembly which may be a two-point latching assembly movable between a latching and an unlatching position, a rotatable member configured for a lazy-cam function connecting the key cylinder and latching assembly, at least one catch located on a surface adjacent the outside of the door, and a bar pivotally mounted to the outside of the door and movable between a first closed position and a second opened position. A first release mechanism is located on an interior side of the door for changing a positon of the latching assembly, and a second release mechanism is located on the interior side of the door for changing a position of the bar, both for allowing a user to open a latched and secured door from the inside.

A lock assembly for an overhead door includes a lock bar and a spring clip receiver. The lock bar is configured to mount on and travel with the overhead door, and includes a track cover portion configured to encircle an overhead door guide track. The lock bar further includes a latch portion extending from the track cover portion. The spring clip receiver includes a spring clip configured to receive the latch portion of the lock bar, and a lock receiver having a pass-through hole for a lock shackle so that, when the overhead door is in a closed position, the lock shackle captures both the lock bar and the spring clip receiver to immobilize the overhead door. The lock assembly may further include an alignment bracket coupled to the lock bar defining an aperture configured to align with the pass-through hole in the lock receiver when the overhead door is in a closed position.

The present invention relates to a vehicle storage compartment arrangement (100), comprising a storage compartment (102) and a cover arrangement (104), said cover arrangement being connected to the storage compartment (102) and slidably movable along a first geometric axis (202) between an opened position and a closed position, wherein said cover arrangement comprises a locking mechanism (106, 406, 506) for connecting the cover arrangement to the storage compartment, said locking mechanism comprising a first (108) and a second (110) locking pin movable along a second geometric axis (204), said first and second geometric axis being substantially perpendicular to each other, wherein the first and second locking pins are controllable between a first state in which the cover arrangement is locked to the storage compartment, and a second state in which the cover arrangement is unlocked from the storage compartment, wherein the cover arrangement further comprises an actuation handle (112) connected to the first and second locking pins by means of at least one pre-tensioned spring (114, 116, 514), wherein said first and second locking pins are arranged in said second state when said actuation handle is moved along said second geometric axis.

A movable latch housing apparatus and method of installation for enhancing security of a latch mechanism that has a channel with a linear drive that is removably engagable to a slidable engagement structure with a shoulder that is pivotally attached through an arm to a door for automated opening and closing, with a lever that can selectably disengage the slidable engagement structure from the linear drive to allow the door to open freely. The apparatus includes a base and a pair of opposing sidewalls each extending in a same direction perpendicular to and straddling the base and attach to the shoulder, the sidewalls extend beyond the base forming an open ended slot for arm movement. Wherein operationally, the base and the sidewalls shield the lever from unauthorized access to help prevent disengagement of the lever from the linear drive which would allow the door to be freely opened.