Flow control device

Details Flow control device Flow control device

2006-01-03

2006-01-03

Jacyna, J. Casimer (Department: 3751)

Valves and valve actuation

With material guide or restrictor

Movable or resilient guide or restrictor

C251S208000, C137S628000, C137S630140, C137S630220

Reexamination Certificate

active

06981688

ABSTRACT:
A flow control device includes an opening part through which an upstream side of a fluid flow passage is in communication with a downstream side of the fluid flow passage. A valve element closes the opening part and includes a large flow rate controlling valve element capable of adjusting an opening degree of the opening part, a sealing member provided with a valve hole having an open area smaller than the opening part and formed to be capable of being brought into tight contact with a peripheral wall part of the opening part and a small flow rate controlling valve element capable of adjusting an opening degree of the valve hole. A valve drive device rotates to drive the valve element in a closed direction for closing the opening part or in an opened direction for opening the opening part.

REFERENCES:
patent: 2763407 (1956-09-01), Rowell
patent: 5458152 (1995-10-01), Goehner et al.
patent: 6491056 (2002-12-01), Gibb

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