One-shot electro-pneumatic actuator

Details One-shot electro-pneumatic actuator One-shot electro-pneumatic actuator

2005-04-26

2005-04-26

Richter, Sheldon J (Department: 3748)

Power plants

One shot explosion actuated expansible chamber type motor

C137S074000, C251S011000

Reexamination Certificate

active

06883326

ABSTRACT:
A one-shot, electro-pneumatic actuator apparatus for quickly supplying a pressurized fluid to an external device upon the actuation of an external control signal. The actuator includes a housing having a first portion for containing a quantity of pressurized fluid, a second portion having a reduced, cross-sectional area, and a third portion. The second portion includes a sealing element disposed therein for containing the pressurized fluid held in the first housing portion. A coil is wound around the second housing portion and receives a signal from an external control subsystem which causes the coil to heat the second housing portion, and thus the sealing element, to damage the sealing element. This enables the pressurized gas to escape through the second portion into the third portion of the housing and subsequently to the external device being controlled. The actuator is extremely compact, relatively inexpensive to construct, and be actuated to release its pressurized fluid in less than about one second on the application of the control signal to the coil.

REFERENCES:
patent: 1921809 (1933-08-01), Crain
patent: 3528449 (1970-09-01), Witte et al.
patent: 4548041 (1985-10-01), Taylor
patent: 4612959 (1986-09-01), Costello
patent: 6575188 (2003-06-01), Parunak

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