Inventor
HERTELL SIEGFRIED
20 patents
⚠️ This page may combine multiple inventors who share the name “HERTELL SIEGFRIED”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
BARMAG BARMER MASCHF
19 patentsUS4648810AMar 10, 1987
Control apparatus for a positive displacement reciprocating pump
BARMAG BARMER MASCHF94 citations96
US4813853AMar 21, 1989
Internal gear pump
BARMAG BARMER MASCHF37 citations92
US4772185ASep 20, 1988
Rotary vane pump having a plurality of inlet and outlet slots in a rotating sleeve
BARMAG BARMER MASCHF26 citations92
US4737087AApr 12, 1988
Drive shaft seal for gear pump and method
BARMAG BARMER MASCHF30 citations92
US4604041AAug 5, 1986
Rotary vane pump
BARMAG BARMER MASCHF26 citations92
US4478562AOct 23, 1984
Oil lubrication of vacuum pump with pulsating oil feed
BARMAG BARMER MASCHF29 citations92
US4523901AJun 18, 1985
Control apparatus for a positive displacement reciprocating pump
BARMAG BARMER MASCHF26 citations81
US4515512AMay 7, 1985
Seal for high pressure pump or the like
BARMAG BARMER MASCHF21 citations75
US4770617ASep 13, 1988
Gear pump with leakage fluid intermittently communicated to expanding fluid cells
BARMAG BARMER MASCHF8 citations73
US4674964AJun 23, 1987
Gear pump having multiple outputs
BARMAG BARMER MASCHF6 citations73
US4462302AJul 31, 1984
Motor fuel feed pump
BARMAG BARMER MASCHF11 citations73
US4255098AMar 10, 1981
Rotary vane pump assembly
BARMAG BARMER MASCHF17 citations73
US4231728ANov 4, 1980
Rotary vane pump
BARMAG BARMER MASCHF8 citations73
US4164384AAug 14, 1979
Rotary vane vacuum pump with filter means for inlet
BARMAG BARMER MASCHF7 citations73
US4303091ADec 1, 1981
Hydraulic control apparatus for load independent flow regulation
BARMAG BARMER MASCHF12 citations70
US4355655AOct 26, 1982
Hydraulic control apparatus for load independent flow regulation
BARMAG BARMER MASCHF9 citations67
US4850814AJul 25, 1989
Hydraulic gear pump
BARMAG BARMER MASCHF5 citations62
US4780070AOct 25, 1988
Gear pump having multiple outputs
BARMAG BARMER MASCHF3 citations62
US4459091AJul 10, 1984
Rotary vane pump
BARMAG BARMER MASCHF2 citations62