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US 4,537,078 AGranted
Precision pressure gauge
AssigneesKotohiko Sekoguchi, Fujikin International, Inc.
InventorsKotohiko Sekoguchi, Yoshiteru Sonoda
Life of this patent
Estimating the term…
Abstract
A precision pressure gauge in which a sleeve is installed between the open section of a cylinder and the ram so as not to rotate the ram but only to rotate the sleeve, and the ram is actuated by fluids led into a cylinder chamber of the cylinder so that the force exerted on the ram is transmitted to a precision electronic weight measuring instrument for continuous high precision measurement of the aforementioned fluids.
Claims8
A precision pressure gauge for measuring the pressure of a fluid applied thereto, said gauge comprising:
- a stationary cylinder having a cylinder chamber one end of which has an opening therein;
- means connected directly to said cylinder for applying said fluid to said chamber;
- a rotatable sleeve mounted in said cylinder;
- a ram extending through said rotatable sleeve and freely rotatable with respect to said sleeve,
- said ram having a first end extending into said chamber and a second end extending out of said sleeve;
- drive means for rotating said sleeve relative to said cylinder;
- and,
- weight measuring means including a receiver to which movement is imparted by axial movement of said ram in response to fluid pressure in said chamber.
5 more elements
Dependencies are inferred from the claim text.