Fast shutter apparatus

Details Fast shutter apparatus Fast shutter apparatus

1984-06-27

1985-05-07

Scott, Samuel

Fluid handling

Destructible or deformable element controlled

Destructible element

137 68A, 251 62, F16K 1304

Patent

active

045151733

ABSTRACT:
An apparatus for protecting diagnostic equipment from blast damage by rapidly interposing a shutter between the equipment and the blast area. The apparatus comprises a sensor for sensing a trigger signal associated with the blast and for converting it into a voltage pulse. The voltage pulse is received by the first end of a firing pin. A pressure chamber holds a gas under pressure. The second end of the firing pin is located inside the pressure chamber and is located above a foil member covering an orifice. When the voltage pulse reaches the second end, a point-to-plane discharge ruptures the foil, allowing the gas to enter a drive housing and quickly move a drive piston away from the foil. A drive rod connects the drive piston to a shutter and as the drive piston is moved down, the shutter moves into a closed position, protecting the equipment from debris.

REFERENCES:
patent: 3358961 (1967-12-01), Montgomery et al.
patent: 3739796 (1973-06-01), Jablansky
patent: 4084602 (1978-04-01), Cook
patent: 4108195 (1978-08-01), Berry

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