Apparatus for protecting vacuum sources including valve which al

Gas separation – With separating media bypass or system gas pressure relief – With heating or cooling means

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55170, 55216, 55417, 55302, 55385C, 137202, 137205, B01d 4642

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active

040294870

ABSTRACT:
An apparatus for protecting vacuum sources from contamination occasioned by aspiration of fluids or aerosols from a device operated by such vacuum sources, having an enclosed vessel in communication with the device, a filter in communication with the enclosed vessel to entrap aerosols and a vacuum-breaking valve alternately in communication with atmosphere & vacuum in communication with the filter to control the application of the vacuum by the vacuum source to the device. The vacuum-breaking valve is operated by a switch assembly mounted within the enclosed vessel and in electrical communication with a solenoid designed to operate a valve member within the vacuum-breaking valve.

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patent: 3314219 (1967-04-01), Griffin et al.
patent: 3431708 (1969-03-01), Moore
patent: 3538682 (1970-11-01), Chattin et al.
patent: 3668825 (1972-06-01), McIlvaine
patent: 3672129 (1972-06-01), Strople et al.
patent: 3918942 (1975-11-01), Rechsteiner et al.
Environmental Control Notes 3, dated Feb. 1972, Environmental Services Branch Div. of Research Natl. Ints. Health, pp. 1-4.

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