Fluid Handling Patents (Class 137)
- Responsive to condition external of system (Class 137/804)
- Utilizing diverse fluids (Class 137/806)
- Utilizing particular fluid (Class 137/807)
- Means to cause rotational flow of fluid (e.g., vortex generator) (Class 137/808)
- System comprising plural fluidic devices or stages (Class 137/814)
- Plural power inputs to single device (Class 137/822)
- Means to regulate or vary operation of device (Class 137/825)
- Structure of body of device (Class 137/833)
- Device including passages having V over T configuration (Class 137/834)
- Device including passages having V over gamma configuration (Class 137/841)
- Device including linearly-aligned power stream emitter and power stream collector (Class 137/842)
- Mixture condition maintaining or sensing (Class 137/88)
- Fuel controlled by boiler or water system condition (Class 137/94)
- Self-proportioning flow systems (Class 137/98)
- Supply and exhaust type (Class 137/102)
- Self-controlled branched flow systems (Class 137/109)
- Liquid level responsive (Class 137/87.02)
- Flow rate responsive (Class 137/87.03)
- Plural sensors (Class 137/87.05)
- Plural (Class 137/124)
- With discharge-controlling receiver (Class 137/130)
- Periodic or accumulation responsive discharge (Class 137/132)
- With strainer, filter, separator or sediment trap (Class 137/140)
- With recorder, register, signal, indicator or inspection window (Class 137/141)
- With flow starting, stopping or maintaining means (Class 137/142)
- With means for mounting and/or positioning relative to siphon chamber (Class 137/152)
- Elements (Class 137/153)
- Gas lift valves for wells (Class 137/155)
- Gas pressure discharge of liquids feed traps (e.g., to boiler) (Class 137/156)
- Foam control in gas charged liquids (Class 137/170.1)
- Fluid separating traps or vents (Class 137/171)
- Liquid filling by evacuating container (Class 137/205)
- Main line flow displaces additive from shunt reservoir (Class 137/205.5)
- Gas pressure storage over or displacement of liquid (Class 137/206)
- Sequentially filled and emptied (e.g., holding type) (Class 137/256)
- With housings, supports or stacking arrangements (Class 137/259)
- Battery or electrolytic cell replenishment (Class 137/260)
- Flow dividing compartments (Class 137/262)
- Tank type manifold (i.e., one tank supplies or receives from at least two others) (Class 137/263)
- Tank within tank (Class 137/264)
- With cross connecting passage (Class 137/265)
- With manifold or grouped outlets (Class 137/266)
- Water crane type (Class 137/273)
- Plural riser (Class 137/280)
- Expansible chamber operated by valve actuator for draining riser (Class 137/281)
- With pump or ejector (Class 137/282)
- Removable valve and valve seat (Class 137/283)
- Removable valve with supplemental check valve (Class 137/285)
- Movable riser actuated valve (Class 137/286)
- Balanced valve (Class 137/289)
- Valve actuator extends laterally from bottom of riser (Class 137/290)
- Valve actuator outside riser (Class 137/291)
- With casing (Class 137/294)
- With actuator lubricating means (Class 137/298)
- With valve at outlet (Class 137/299)
- With supplemental valve (Class 137/300)
- Protection against freezing (Class 137/301)
- Blow out preventer or choke valve device (e.g., oil well flow controlling device, etc.) (Class 137/315.02)
- Solenoid or electromagnetically operated valve (Class 137/315.03)
- Pressure regulating type valve (Class 137/315.04)
- Gas or water meter replacing (Class 137/315.06)
- Assembling or disassembling flexible tube or sleeve type valve (Class 137/315.07)
- Assembling or disassembling float or float valve (Class 137/315.08)
- Assembling or disassembling multi way valve (Class 137/315.09)
- Assembling, disassembling, or removing cartridge type valve (e.g., insertable and removable as a unit, etc.) (Class 137/315.11)
- Assembling or disassembling pivoted valve (Class 137/315.16)
- Assembling or disassembling rotary valve (Class 137/315.17)
- Assembling or disassembling reciprocating valve (Class 137/315.27)
- Assembling or disassembling check valve (Class 137/315.33)
- With mechanical movement between actuator and valve (Class 137/315.35)
- Tool for applying or removing valve or valve member (Class 137/315.41)
- With holding means functioning only during transportation assembly or disassembly (Class 137/316)
- Tapping a pipe, keg, or apertured tank under pressure (Class 137/317)
- Foot valve extraction from top of enclosure (Class 137/326)
- With disassembly tool engaging feature (Class 137/327)
- With provision of alternate wear parts (Class 137/329)
- Removable valve with normally disabled supplemental check valve (Class 137/329.1)
- With burner (Class 137/335)
- Hot and cold water system having a connection from the hot to the cold channel (Class 137/337)
- Air heated or cooled (fan, fins, or channels) (Class 137/338)
- With diversion of part of fluid to heat or cool the device or its contents (Class 137/339)
- Circulating fluid in heat exchange relationship (Class 137/340)
- With electric heating element (Class 137/341)
- Washing machine cycle control (Class 137/387)
- Liquid excluding devices for gas inlet or outlets (Class 137/388)
- With second diverse control (Class 137/389)
- Control of both inflow and outflow of tank (Class 137/391)
- Electrical characteristic sensing (Class 137/392)
- With control fluid connection at desired liquid level (Class 137/393)
- Control of outflow from tank (Class 137/395)
- With supplemental or safety closing means or bias (Class 137/400)
- By weight of accumulated fluid (Class 137/403)
- By float controlled valve (Class 137/409)
- Barometric (Class 137/453)
- Safety cut-off requiring reset (Class 137/456)
- Fluid opened valve requiring reset (Class 137/467)
- Consistency responsive (Class 137/467.5)
- Thermal responsive (Class 137/468)
- Pop valves (Class 137/469)
- Combustion engine induction type (Class 137/479)
- Line flow effect assisted (Class 137/484.2)
- Pilot or servo controlled (Class 137/485)
- Bi-directional flow valves (Class 137/493)
- With separate connected fluid reactor surface (Class 137/494)
- Direct response valves (i.e., check valve type) (Class 137/511)
- Non-valved flow dividers (Class 137/561A)
- Faucet connected, sink drained (Class 137/562)
- Closed circulating system (Class 137/563)
- Main line as motive fluid for follower-type feeder (Class 137/564.5)
- With pump (Class 137/565.01)
- Plural tanks or compartments connected for serial flow (Class 137/571)
- Tank with movable or adjustable outlet or overflow pipe (Class 137/577)
- With running joint between movable parts of system (Class 137/580)
- Movable tank (Class 137/581)
- With antisplash means not in flow passage (Class 137/582)
- System with plural openings, one a gas vent or access opening (Class 137/583)
- Tank with internally extending flow guide, pipe or conduit (Class 137/590)
- Head-establishing standpipe or expansion chamber (e.g., surge tanks) (Class 137/593)
- Programmer or timer (Class 137/624.11)
- Line condition change responsive release of valve (Class 137/624.27)
- Multi-way valve unit (Class 137/625)
- Plural petcocks (Class 137/626)
- Sequential distributor or collector type (Class 137/627)
- Sequentially closing and opening alternately seating flow controllers (Class 137/627.5)
- Sequentially progressive opening or closing of plural valves (Class 137/628)
- With preselecting means for plural valve actuator (Class 137/635)
- With selective motion for plural valve actuator (Class 137/636)
- Valves with separate, correlated, actuators (Class 137/637)
- Plural noncommunicating flow paths (Class 137/594)
- Supply and exhaust (Class 137/596)
- Multiple inlet with multiple outlet (Class 137/597)
- Hydraulic brake line (e.g., hill holders) (Class 137/598)
- Dividing into parallel flow paths with recombining (Class 137/599.01)
- Multiple inlet with single outlet (Class 137/602)
- With flow control means for branched passages (Class 137/861)
- Flow path with serial valves and/or closures (Class 137/613)
- Articulated or swinging flow conduit (Class 137/615)
