Actuator of diaphragm type
Number of patents in Portfolio can not be more than 2000
United States of America
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-
Jan 2, 1996
Grant Date -
N/A
app pub date -
Oct 25, 1994
filing date -
Mar 22, 1991
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An actuator (1) of a diaphragm type which comprises an actuator case (2,3), a diaphragm (5) housed in the actuator case, a diaphragm plate (4) attached to the diaphragm for moving together with the diaphragm according to introduction of negative or atmospheric pressure into a negative pressure chamber (7) formed between the diaphragm and the actuator case (2) so as to actuate a device connected to the diaphragm plate. The diaphragm is formed with one or both of an annular rib (5e) having a thick-walled section and an annular expansive portion (5d) having a curved section. Therefore, the diaphragm is hard to be disengaged from the diaphragm plate even if an immoderate force is applied on the diaphragm.
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Cited Art Landscape
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