Inventor
NEFF JAMES A
US35 patents
⚠️ This page may combine multiple inventors who share the name “NEFF JAMES A”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MAC VALVES INC
33 patentsUS4574844AMar 11, 1986
Four-way poppet valve
MAC VALVES INC77 citations95
US6543481B2Apr 8, 2003
Pilot operated pneumatic valve
MAC VALVES INC24 citations92
US6192937B1Feb 27, 2001
Pilot operated pneumatic valve
MAC VALVES INC48 citations92
US6095184AAug 1, 2000
Pressure regulator with integrated control valve, adjustable downstream pressure build and quick exhaust
MAC VALVES INC22 citations92
US5092365AMar 3, 1992
Valve with adjustable valve seat
MAC VALVES INC38 citations92
US4880033ANov 14, 1989
Poppet valve
MAC VALVES INC42 citations92
US4770210ASep 13, 1988
Valve manifold stacking base
MAC VALVES INC45 citations92
US4485846ADec 4, 1984
Four-way valve with integral flow controls, common exhaust, and cartridge type pilot valve
MAC VALVES INC44 citations92
US4453565AJun 12, 1984
Four-way valve with cover mounted pressure regulating and flow control valve
MAC VALVES INC32 citations92
US4298027ANov 3, 1981
Three-way normally closed pilot valve
MAC VALVES INC37 citations92
US4257572AMar 24, 1981
Valve with internal accumulator and check valve
MAC VALVES INC40 citations92
US4195552AApr 1, 1980
Pressure reducer and flow control valve
MAC VALVES INC39 citations92
US5192936AMar 9, 1993
Solenoid
MAC VALVES INC33 citations91
US4267862AMay 19, 1981
Directional control valve with flow path through valve spool
MAC VALVES INC52 citations89
US4522374AJun 11, 1985
Valve spool
MAC VALVES INC21 citations82
US4407323AOct 4, 1983
Cartridge type pilot valve
MAC VALVES INC22 citations82
US4279271AJul 21, 1981
Pressure regulator and flow control valve with pre-exhaust
MAC VALVES INC23 citations82
US4100519AJul 11, 1978
Alignment means for a moveable pole-plunger assembly
MAC VALVES INC26 citations82
US4770209ASep 13, 1988
Valve base with integral flow controls
MAC VALVES INC9 citations74
US4579042AApr 1, 1986
Selective air pressure control system for welding and like apparatus
MAC VALVES INC20 citations74
US4566490AJan 28, 1986
Direct solenoid operated valve with minimal tolerance accumulation
MAC VALVES INC12 citations74
US4465100AAug 14, 1984
Four-way stacking valve with common electrical conduit and individual body mounted exhaust flow controls
MAC VALVES INC8 citations74
US4462427AJul 31, 1984
Four-way stacking valve with common electrical conduit and body mounted individual exhaust flow controls that project through the cover
MAC VALVES INC10 citations74
US4438418AMar 20, 1984
Low-wattage solenoid
MAC VALVES INC14 citations74
US4381797AMay 3, 1983
Flow control valve with a non-rising stem
MAC VALVES INC8 citations74
US4271864AJun 9, 1981
Pressure regulating valve
MAC VALVES INC12 citations74
US4271868AJun 9, 1981
Pilot operated pilot valve
MAC VALVES INC17 citations74
US4197874AApr 15, 1980
Pressure regulator and flow control valve with pre-exhaust vent means
MAC VALVES INC19 citations74
US4177840ADec 11, 1979
Pressure regulation and flow control valve with combination needle and check valves
MAC VALVES INC9 citations73
US4491151AJan 1, 1985
Four-way stacking valve with common electrical conduit and individual body mounted exhaust flow controls
MAC VALVES INC4 citations63
US4491152AJan 1, 1985
Four-way stacking valve with common electrical conduit and body mounted individual exhaust flow controls that project through the cover
MAC VALVES INC3 citations63
US4182360AJan 8, 1980
Pressure regulating and flow control valve
MAC VALVES INC6 citations63
US4453697AJun 12, 1984
Remote air operator for an air valve, with manual override and indicator
MAC VALVES INC1 citations52