Systems Patents (Class 137/561R)
- Pumped fluid control (Class 137/565.11)
- Combined with fluid receiver (Class 137/565.17)
- And jet-aspiration type pump (Class 137/565.22)
- Vacuum pump (Class 137/565.23)
- Resiliently mounted pump (Class 137/565.24)
- Hand pump (Class 137/565.25)
- Multiple inlet with multiple outlet (Class 137/565.26)
- Downstream cyclic distributor (Class 137/565.27)
- Plural (Class 137/565.29)
- With pump bypass (Class 137/565.35)
- Drain valve actuator mounted on pump (Class 137/565.36)
- Sequential distributor or collector type (Class 137/625.11)
- Sequentially progressive opening or closing of plural ports (Class 137/625.12)
- Selective reciprocation or rotation (Class 137/625.17)
- Plural noncommunicating flow paths (Class 137/625.18)
- Supply and exhaust (Class 137/625.2)
- Dividing into parallel flow paths with recombining (Class 137/625.28)
- Multiple inlet with single outlet (Class 137/625.4)
- Selective opening of plural ports (Class 137/625.42)
- Four port reversing valves (Class 137/625.43)
- Pivoted valve unit (Class 137/625.44)
- Rotary valve unit (Class 137/625.46)
- Reciprocating valve unit (Class 137/625.48)
- With fluid coupling (e.g., railway car hose coupling, truck-trailer oil system coupling, etc.) (Class 137/599.02)
- System having plural inlets (Class 137/599.03)
- Having digital flow controller (Class 137/599.05)
- With multi way valve having serial valve in at least one branch (Class 137/599.08)
- Fluid pressure regulator in at least one branch (Class 137/599.09)
- Flow passage with bypass (Class 137/599.11)
- Second valve assembly carried by first valve head (Class 137/599.16)
- With foam controlling means (e.g., beer, soda faucets) (Class 137/600)
- With common operator (Class 137/601.01)
- Fluid actuated or retarded (Class 137/601.13)
- Electrical actuator (Class 137/601.14)
- Mechanical movement between actuator and valve (Class 137/601.15)
- Rotary valve (Class 137/601.16)
- Having guide or restrictor (Class 137/601.18)
- Having direct response valve (e.g., check valve, etc.) (Class 137/601.2)
- With common valve operator (Class 137/862)
- With valve or movable deflector at junction (Class 137/872)
- Biased valve (Class 137/877)
- Single inlet with multiple distinctly valved outlets (Class 137/883)
- Sectional block structure (Class 137/884)
- With fluid actuator (Class 137/885)
- With threaded actuator (Class 137/886)
- Containing rotary valve (Class 137/887)
- Separable flow path section, valve or closure in each (Class 137/614)
- Common actuator (Class 137/614.11)
- One valve head provides seat for other head (Class 137/614.16)
- One valve head carries other valve head (Class 137/614.18)
- Biased valve with external operator (Class 137/614.19)
- Direct response normally closed valve limits direction of flow (Class 137/614.2)
- Coaxial oppositely directed seats (Class 137/614.21)