US PATENT SUBCLASS 137 / 561 R
SYSTEMS

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

561 RSYSTEMS {32}
561 A  DF  .~> Non-valved flow dividers
562  DF  .~> Faucet connected, sink drained
563  DF  .~> Closed circulating system {1}
564.5  DF  .~> Main line as motive fluid for follower-type feeder
565.01  DF  .~> With pump {11}
571  DF  .~> Plural tanks or compartments connected for serial flow {5}
577  DF  .~> Tank with movable or adjustable outlet or overflow pipe {3}
580  DF  .~> With running joint between movable parts of system
581  DF  .~> Movable tank
582  DF  .~> With antisplash means not in flow passage
583  DF  .~> System with plural openings, one a gas vent or access opening {3}
590  DF  .~> Tank with internally extending flow guide, pipe or conduit {3}
593  DF  .~> Head-establishing standpipe or expansion chamber (e.g., surge tanks)
624.11  DF  .~> Programmer or timer {5}
624.27  DF  .~> Line condition change responsive release of valve
625  DF  .~> Multi-way valve unit {12}
626  DF  .~> Plural petcocks
627  DF  .~> Sequential distributor or collector type
627.5  DF  .~> Sequentially closing and opening alternately seating flow controllers
628  DF  .~> Sequentially progressive opening or closing of plural valves {4}
635  DF  .~> With preselecting means for plural valve actuator
636  DF  .~> With selective motion for plural valve actuator {4}
637  DF  .~> Valves with separate, correlated, actuators {3}
594  DF  .~> Plural noncommunicating flow paths {1}
596  DF  .~> Supply and exhaust {4}
597  DF  .~> Multiple inlet with multiple outlet
598  DF  .~> Hydraulic brake line (e.g., hill holders)
599  DF  .~> Dividing into parallel flow paths with recombining {4}
602  DF  .~> Multiple inlet with single outlet {4}
861  DF  .~> With flow control means for branched passages {8}
613  DF  .~> Flow path with serial valves and/or closures {7}
615  DF  .~> Articulated or swinging flow conduit {1}

Unofficial Alpha Subclasses: R A

DEFINITION

Classification: 137/561

(under the class definition) Systems comprising means for confining flowable material during its flow or making it available for flow and either causing or controlling its flow or potential flow, which means is (1) a combination of material containing or confining means, such as tanks or conduits, in flow relation with flow causing means, such as pumps, (2) combinations of two or more material confining devices in flow relation, including branched flow lines and hydrostatic devices, such as standpipes or vertically adjustable outlet and overflow conduits in open communication with the confined body of flowable material; and (3) combinations of material confining devices with flow controlling means when more of the material confining device is claimed than is necessary to mount the flow controlling means.

(1) Note. Flow controlling means comprise valves with or without actuating means, closures for flow passages, flow restrictors, baffles and guides.

(2) Note. Passages which divert material from the flow system for the purpose of actuating or controlling a pump or valve or similar part which is solely concerned with the mechanics of handling the main flow of the material are not considered flow confining means.

(3) Note. This subclass provides for flow dividers of the nonautomatic nonvalved, nonaccumulating type.

SEE OR SEARCH THIS CLASS, SUBCLASS:

115.01+, and 118.01+, for self controlled branching systems having plural outflows. See (3) Note. 262, for flow dividing by passage through or overflow from plural compartments. See (3) Note.

597, 599+ and 608, for flow dividing with combining or with valved passages. See (3) Note.

631+, for cyclically actuated valves. Lines With Other Classes and Within This Class, (2) Plural Valves, and Subclass References to the Current Class, for search notes on plural nonautomatic valves.

SEE OR SEARCH CLASS

73, Measuring and Testing,

863+, for a sampling system which obtains a predetermined portion of a mass of material to be tested.

222, Dispensing, appropriate subclasses, for subject matter which comprises distribution systems as defined above, but

which has in most instances particular application to the problems of vending or handling fluent solids.

251, Valves and Valve Actuation,

12+, for valve actuators which divert and use a part of the material being handled in the system to actuate or retard valves controlling the fluid flow in such systems. See (2) Note, above.

399, Electrophotography,

237+, for liquid developer applied to a latent image within an electrophotos:graphic device.