Abstract: A double lock, dual action gravity latch device to secure a gate in a closed position comprising a latch assembly including a pivotal latch member movable between a latched and unlatched position, a keeper assembly including a striker pin to maintain the gate in the closed position when the pivotal latch member in the latched position, a latch lock assembly including a lock assembly with a first lock and a second lock each independently movable between a locked position and an unlocked position disposed on opposite sides of the gate to selectively move a latch blocking assembly from a latch blocking position to a latch unblocking position when either the first lock or second lock is moved from the locked position to the unlocked position and move the latch blocking assembly from the latch unblocking position to the latch blocking position when the unlocked lock is moved from the unlocked position to the locked position.

Abstract: The present invention relates to latches, and in particular gravity latches. The latch comprises a housing which integrally mounts together with the latch a lock mechanism The latch can therefore be locked. The lock mechanism is such that the latch can also be locked in the open position.A further mechanism is also provided which enables operation of the latch from the opposite side of the fence, gate or door to where the latch is mounted.

Abstract: An automatically disengaing locking device is provided for use on a container having a hinged lid pivotable between open and closed positions. The locking device consists of a housing mounted to the side surface of the container, and a latch securable to the lid having a portion which extends through an opening in the housing when the lid is closed. The locking device further includes a keeper element disposed within the housing for engaging the lower portion of the latch to secure the lid in its closed position, a manual release mechanism comprising a plunger for allowing the selective disengagement of the keeper from the latch, and a pendulum for automatically disengaging the keeper from the latch when the container is tilted for emptying.

Abstract: A self locking device that is used with a overhead, horizontally pivoted, door in combination with a power operated door opener is disclosed. The device comprises a latch mechanism that is activated by the movement of the door arm and a striker that receives a locking dog. A door arm, which is a part of the door opener, is the member that transfers the movement of the power operated door opener to the door. When the door arm is closing the door, the locking dog is free to interface with a striker. A striker mounted on the header of the door frame receives the locking dog and keeps the door from being forced open which can be done by breaking the door opener mechanism. The latching dog is released by the door opener mechanism with the reverse movement of the door arm and therefore the door is moved to its open position.