Abstract: A device includes a pressure regulator comprising a body including a control chamber adapted to connect to a portable pressure vessel filled with compressed CO2 via an inlet coupling, the control chamber having a threaded stepped diameter passageway, a relief valve, and a pressure gauge, a valve, a cap including a hand wheel, and a pressure adjustment assembly including a resilient sealing disk, a disc, a thumbtack member, a fastener for securing the thumbtack member and the sealing disk together, and a spring biased between the sealing disk and the disc; a housing for partially enclosing the pressure regulator with the hand wheel, the pressure gauge, and an outlet coupling being exposed; and a hanging member pivotably secured onto the housing.

Abstract: A two stage pressure regulating device is disclosed. The device is adapted to supply compressed air from a portable container having a pressure of about 150 kg/cm2 to a pneumatic tool by first greatly reducing pressure of compressed air in the container to about 13 kg/cm2 through a pressure-reducing unit and then precisely adjusting same in a low pressure range of about 1-10 kg/cm2 through a fine pressure adjustment unit which is in fluid communication with the pneumatic tool, whereby a user is able to continuously safely operate the pneumatic tool.

Abstract: A two stage pressure regulating device is disclosed. The device is adapted to supply compressed air from a portable container having a pressure of about 150 kg/cm2 to a pneumatic tool by first greatly reducing pressure of compressed air in the container to about 13 kg/cm2 through a pressure-reducing unit and then precisely adjusting same in a low pressure range of about 1-10 kg/cm2 through a fine pressure adjustment unit which is in fluid communication with the pneumatic tool, whereby a user is able to continuously safely operate the pneumatic tool.

Abstract: A work piece clamping device is composed of a clamping block, a locking cover, a plate button, a support rod, a press rod, a tightening nut engaged with the press rod, and a fastening member. The clamping block is provided with a vertical wall for locating a work piece in place on a workbench top. The clamping block can be moved up and down along the support rod by the fastening member which is located under the workbench top and is movably fitted over the support rod. The clamping block is exerted on by the pressure of the plate button so as to hold securely the work piece on the workbench top.