Ergonomic pneumatic calibration power

Details Ergonomic pneumatic calibration power Ergonomic pneumatic calibration power

2011-01-25

2011-01-25

Williams, Hezron (Department: 2856)

Measuring and testing

Instrument proving or calibrating

Fluid pressure

Reexamination Certificate

active

07874196

ABSTRACT:
A pressure calibration pump comprises a manifold having a port for connection to a reference device and a port for connection to a device to be calibrated. A piston is operated by two handles to pressurize air in the manifold. A pressure adjustment knob is provided to adjust the pressure of air in the manifold and a vent valve, operated by a vent knob is provided to vent air from the manifold. The vent knob is positioned within and concentric with the adjustment knob.

REFERENCES:
patent: 3177432 (1965-04-01), Kelln
patent: 3531822 (1970-10-01), Bush
patent: 4698998 (1987-10-01), Varnagy
patent: 5324181 (1994-06-01), McGoldrick et al.
patent: 6318155 (2001-11-01), Carr
patent: 2002/0108671 (2002-08-01), Campbell et al.

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