Elliptical pneumatic actuator with a wedge shaped base

Details Elliptical pneumatic actuator with a wedge shaped base Elliptical pneumatic actuator with a wedge shaped base

2007-08-17

2008-11-11

Lee, Kyung (Department: 2832)

Electricity: circuit makers and breakers

Fluid pressure

Flow-responsive type

C200S08100R, C200S0830SA, C340S442000, C340S445000, C073S146000

Reexamination Certificate

active

07449646

ABSTRACT:
A pneumatically actuated switching device has an elliptical dome with spaced apart support columns protruding from a concave inner face surface for anchoring to a floor of a wedge shaped base. The base is elliptical and bounded by an endless upstanding sidewall having a projected edge that varies continuously in height about one of the major axis and the minor axis, the projected edge having one of a channel and a locking lip and the other of the channel and the locking lip being formed on the elliptical edge for interlocking engagement in an air tight fashion. An electrically conductive switch is coupled by a duct for responding to a volume of pressurized air within the dome and the base by deflection of the convex actuating wall.

REFERENCES:
patent: 3823285 (1974-07-01), Dwyer
patent: 5113048 (1992-05-01), Lafferty
patent: D339570 (1993-09-01), Dwyer
patent: 5461207 (1995-10-01), Van Lear
patent: 5699041 (1997-12-01), Ballyns
patent: 5736702 (1998-04-01), Roberts et al.

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