Fluid handling – Systems – Programmer or timer
Patent
1976-07-22
1978-05-23
Cohan, Alan
Fluid handling
Systems
Programmer or timer
137 82, G05D 1600
Patent
active
040905314
ABSTRACT:
A pneumatic control device for operating pneumatic apparatus in a pneumatic control system. The control device includes a pneumatic conduit having a bleed orifice therein, one end of the conduit being adapted to accommodate an air pressure source, a venting member for regulating the flow of air through the bleed orifice, the venting member being movable between a first position in which the flow of air through the orifice is unimpeded by the venting member and a second position in which substantially no air will flow through the orifice, a timing means activatable for a variable but predetermined time period which time period is selectable at the outset of activation, and a control means connected to the timing means and to the venting member for controlling the movement of the venting member between the first and second positions upon the activation and deactivation of the timing means.
REFERENCES:
patent: 2713900 (1955-07-01), Bloom
patent: 2827119 (1958-03-01), Mueller
patent: 3788593 (1974-01-01), Cohen
patent: 3931832 (1976-01-01), Holder
Cohan Alan
M.H. Rhodes, Inc.
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