Compact pressure gauge

Details Compact pressure gauge Compact pressure gauge

G - Physics

01

L

73/15

G01L 7/16 (2006.01)

Patent

CA 1315118

ABSTRACT OF THE DISCLOSURE A compact pressure gauge includes a cylinder which has a compressed gas inlet, a piston, a U-shaped piston rod, and a compression spring. The compression spring is sleeved on the piston rod in the cylinder for biasing the piston against the compressed gas pressure exerted on the piston. The U-shaped piston rod has parallel first and second arms. The first arm extends into the cylinder. The second arm includes a rack secured thereto. A rotating shaft includes an indicator secured thereto for displaying the rotational degree of the rotating shaft, and a pinion secured to the rotating shaft for meshing with the rack. channel member is secured to the cylinder and has a guide slot through which the second arm extends. A positioning plate is secured to the channel member so that the rotating shaft is journalled on the cylinder and the positioning plate. When the piston rod is moved, the rotating shaft is rotated due to the fact that the pinion always meshs with the rack.

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