Butterfly valve for controlling a gas pressure

Details Butterfly valve for controlling a gas pressure Butterfly valve for controlling a gas pressure

2006-07-18

2006-07-18

Bastianelli, John (Department: 3751)

Valves and valve actuation

Rotary valves

Butterfly

C251S367000

Reexamination Certificate

active

07077383

ABSTRACT:
A butterfly valve for controlling a gas pressure, in particular inside a cabin of an aircraft, comprises a valve housing (10) having a longitudinal axis (11), a shaft (20) having a rotation axis (21), and a closure member (30) connected to the shaft (20). The closure member (30) is pivotally mounted in the valve housing (10) for rotation about the rotation axis (21) between an open position and a closed position. Moreover, the closure member (30) consists of a first disk (40) and a complementary second disk (50) which abut against each other. The first disk (40) and the second disk (50) are symmetrically arranged with regard to a symmetric axis (31) extending at a predetermined angle of inclination to the rotation axis (21). Such a butterfly valve ensures a restricted cross-sectional area of the valve housing (10), even if breaking of the closure member (30) occurs.

REFERENCES:
patent: 2058996 (1936-10-01), Kollberg
patent: 2934312 (1960-04-01), Stevens
patent: 3059897 (1962-10-01), Jensen
patent: 3578287 (1971-05-01), Salerno et al.
patent: 3627261 (1971-12-01), Ludeman
patent: 3837616 (1974-09-01), Castriota-Scanderberg
patent: 4327765 (1982-05-01), Wilson et al.
patent: 5465756 (1995-11-01), Royalty et al.
patent: 5876015 (1999-03-01), Schaeffer et al.

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