US PATENT SUBCLASS 137 / 599
.~ Dividing into parallel flow paths with recombining

Current as of: June, 1999
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137 /   HD   FLUID HANDLING

561 R  DF  SYSTEMS {32}
599.~ Dividing into parallel flow paths with recombining {4}
599.1  DF  .~.~> Flow passage with bypass connections
599.2  DF  .~.~> Second valve assembly carried by first valve head
600  DF  .~.~> With foam controlling means (e.g., beer, soda faucets)
601  DF  .~.~> With common operator for valve in each path

DEFINITION

Classification: 137/599

(under subclass 561) Systems including a fluent material branched flow line having a single inlet or admission passage and a single outlet or exhaust passage, said admission and exhaust passages being joined by two or more flow lines or valve controlled passages.

(1) Note. It is not necessary that all the parallel flow passages be open simultaneously. One may even be broken or severed as for repair purposes.

(2) Note. By-passes established for power or control purposes in the system are not considered to constitute a parallel flow path within the flow system.

SEE OR SEARCH THIS CLASS, SUBCLASS:

89, for self-correlating systems involving mixture condition maintenance in which the flow is divided and recombined.

108, for pump unloader type self-correlating systems.

110, for self-controlled branch flow systems providing for dividing and recombining the flow. 115.01+, for self-correlating systems comprising a by-pass controlled by a main line condition.

170.5, for apparatus for controlling degree of frothing or foam formation in the handling of gas charged liquids, said apparatus including a trap for effecting the separation of gas from such liquids and reintroducing the gas into the flow path.

170.6, for apparatus for controlling the degree of frothing or foam formation in the handling of gas charged liquids, said apparatus including a conditioning trap and means to by-pass the trap.

171+, for fluid separating traps and vents, especially subclasses 175 and 197+ for restricted outlets for gas in diverse fluid containing pressure systems.

247.29, for divided and recombined passages in a liquid seal apparatus.

462, for safety cut-off valves reset by pressure equalizing

by-pass.

563+, for by-passes establishing a closed circulating path, and see the search notes to subclass 563.

569, for systems involving pump by-passes, and see the search notes thereto.

596.12+, for supply and exhaust valves having a by-pass around the motor ports.

597, for distribution systems which first combine flows and then divide.

625.28+, for valve units having similar passages. 629+, for sequentially operated valves for main and pressure-equalizing shunt valves.

801, for nozzles, spouts and terminal deflectors the mounting of which may involve a spider or bar in the flow path.

SEE OR SEARCH CLASS

138, Pipes and Tubular Conduits,

40+, for flow line restrictors which may involve dividing the line longitudinally.

166, Wells,

148, for a well conduit with a packer, the well conduit carrying a check valve and there being another valve means carried by the conduit for by-passing the check valve.

222, Dispensing,

318, and 443 for discharge assistant and stationary measuring trap by-passes.

251, Valves and Valves Actuation,

12+, for flow connected lines for diverting fluid for valve actuating power or control devices, especially subclasses 51 and 55 for by-passes for fluid dashpots or pressure chambers for valve actuation or retarding, subclass 117 for valve devices having a flow restrictor in a flow path parallel to another controlled path, and subclasses 118+ for material guides and restrictors which may comprise separation of a flow passage into plural parallel passages.