Device for vacuum testing of closed systems

Details Device for vacuum testing of closed systems Device for vacuum testing of closed systems

1993-07-01

1994-12-13

Noland, Thomas P.

Measuring and testing

With fluid pressure

Leakage

73 454, 73 497, 73 52, 73303, 73 46, 73 47, G01M 1500, G01M 326

Patent

active

053720318

ABSTRACT:
The vacuum tester has a housing which is small enough to be held in one hand in which is contained a small vacuum pump, an activator switch and a vacuum gauge. A non-return flap valve, or check valve, is disposed between the vacuum pump and the vacuum gauge so that the vacuum within the chamber under test is not lost once the vacuum pump has been turned off. A connector with a vacuum hose extending therefrom is provided to apply the vacuum to the chamber. Interchangeable adapters can be attached at the end of the vacuum hose to provide a seal with the opening in the chamber. Detection and quantization of leaks in closed systems is provided by observing the leak-back rate on the vacuum gauge once the vacuum pump has been turned off.

REFERENCES:
patent: 3362225 (1968-01-01), Noble
patent: 4617824 (1986-10-01), Cybulski et al.
patent: 5201213 (1993-04-01), Henning
Sales brochure for vacuum tester.
Advertisement in Hopper catalog.
Advertisement in The Precision Manufacturing and Sales Company, Inc., catalog, 1992.

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