Patent ID: 9033376
Filing Date: 2015-05-19
Classification: E05B,Y10T

Abstract:
1. An apparatus for securing a closure that opens by movement relative to a fixed structure having a locking bolt recess, the apparatus comprising: a locking bolt for engaging the locking bolt recess to prevent the opening of the closure; a latching lever operatively coupled with the locking bolt wherein the latching lever moves between (a) a latching lever locked position in which the locking bolt is disposed in a first position engaged with the locking bolt recess for inhibiting opening of the closure and (b) a latching lever unlocked position in which the locking bolt is disposed in a second position disengaged from the locking bolt recess for permitting opening of the closure; a hydraulic cylinder having a high pressure chamber and an atmospheric pressure chamber separated by a piston that is operatively engaged with a ram for moving the ram between a first ram position in which the ram is disengaged from the latching lever and a second ram position for engaging the latching lever; a hydraulic fluid reservoir in flow communication with the hydraulic cylinder, the hydraulic fluid reservoir holding a hydraulic fluid; a pump to extract a portion of the hydraulic fluid from the reservoir and transfer it at a pressure greater than atmospheric pressure through a hydraulic fluid line to the high pressure chamber of the hydraulic cylinder; a pump actuator accessible to a user from at least one side of the closure, wherein each actuation of the pump actuator causes at least one cycle of the pump, each cycle of the pump for transferring a portion of the hydraulic fluid from the reservoir to the high pressure chamber causing the piston to move the ram towards the second ram position; and a gap distance disposed between the ram in the first ram position and the latching lever, the gap distance for controlling a number of cycles of the pump required to move the ram from the first ram position through the gap distance to the second ram position for engaging the latching lever and causing the latching lever to move from the latching lever locked position to the latching lever unlocked position.