Valve for use in a breathing apparatus

Details Valve for use in a breathing apparatus Valve for use in a breathing apparatus

2005-06-28

2005-06-28

Bastianelli, John (Department: 3751)

Valves and valve actuation

Electrically actuated valve

Including solenoid

C251S129190, C251S331000

Reexamination Certificate

active

06910674

ABSTRACT:
A valve in a breathing device has a housing with an inlet and an outlet, a valve housing having an inlet and an outlet, a valve seat arranged in the housing, a valve body arranged in the housing to be freely moveable with respect to the valve seat between a closed position where the valve body completely covers the valve seat and an open position where the valve body is distanced from the valve seat. The valve body comprising a rigid central portion and a circumferential wrinkled and flexible portion devised for friction-free movement of the rigid central portion, and an actuator for controlling a force applied on the valve body in response to a control signal. The actuator includes an actuator body, a shaft having an end contactable with the valve body, and an electromagnetic displacement coil.

REFERENCES:
patent: 3429552 (1969-02-01), Huley et al.
patent: 4699137 (1987-10-01), Schroeder
patent: 4930747 (1990-06-01), Nakamura
patent: 5265843 (1993-11-01), Kleinhappl
patent: 5419367 (1995-05-01), Noya
patent: 5467961 (1995-11-01), Sausner et al.
patent: 5630403 (1997-05-01), Van Kampen et al.
patent: 5947155 (1999-09-01), Miki et al.
patent: 6019344 (2000-02-01), Engel et al.
patent: 6722629 (2004-04-01), Nakazawa
patent: WO 02/04850 (2002-01-01), None

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