Fluid handling – Self-proportioning or correlating systems – Self-controlled branched flow systems
Patent
1978-01-20
1980-05-20
Cline, William R.
Fluid handling
Self-proportioning or correlating systems
Self-controlled branched flow systems
1376255, 13762418, F16K 1110, F16K 3136
Patent
active
042034590
ABSTRACT:
Automatic valve for controlling the passage of an in-feed pressure fluid to be delivered in predetermined quantities into one receiver. After delivery of the predetermined quantity, the flow to the one receiver is cut off and the flow is directed to the next receiver. The receivers may be sequential nozzles of a sprinkler system. The automatic control valve comprises two tandem-joined piston cylinders. The first piston cylinder comprises two cavities of different volumes. The second piston cylinder comprises only one cavity. There is placed a piston in each of the cavities of the first piston cylinder, which pistons have different diameters and the circumferential surfaces spaced from the inside walls defining the respective cavities of the first piston cylinder to afford flow of pressure fluid past the pistons. The cavity of the second piston cylinder comprises a shock-absorbing device, or dash pot connected with a common piston rod carrying also both the pistons in the cavities of the first piston cylinder. The piston in the cavity of bigger volume of the first piston cylinder is fixed to the common piston rod, whereas the piston in the cavity of smaller volume of the first piston cylinder is shiftable on the common piston rod between two limit stops.
REFERENCES:
patent: 2059126 (1936-10-01), Malthaner
patent: 2090246 (1937-08-01), Alexander
patent: 2208682 (1940-07-01), O'Brien
patent: 3243155 (1966-03-01), Valente
patent: 3732889 (1973-05-01), Conery et al.
patent: 3850078 (1974-11-01), Polizzi
Cline William R.
Firma Marcel Boschung
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