Inventor
MERZ JOHANN
DE24 patents
⚠️ This page may combine multiple inventors who share the name “MERZ JOHANN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ZAHNRADFABRIK FRIEDRICHSHAFEN
22 patentsUS4437819AMar 20, 1984
Controllable vane pump
ZAHNRADFABRIK FRIEDRICHSHAFEN30 citations92
US5466135ANov 14, 1995
Rotary vane-cell pump
ZAHNRADFABRIK FRIEDRICHSHAFEN26 citations88
US4752195AJun 21, 1988
Rotary vane type of pump with elongated damping chambers
ZAHNRADFABRIK FRIEDRICHSHAFEN19 citations82
US4709666ADec 1, 1987
Regulatable fan drive
ZAHNRADFABRIK FRIEDRICHSHAFEN20 citations82
US4516784AMay 14, 1985
Seal assembly with radially undulated sealing element
ZAHNRADFABRIK FRIEDRICHSHAFEN26 citations82
US4344717AAug 17, 1982
Means for mutual positioning of members
ZAHNRADFABRIK FRIEDRICHSHAFEN27 citations82
US6254358B1Jul 3, 2001
Positive-displacement pump
ZAHNRADFABRIK FRIEDRICHSHAFEN7 citations73
US6095773AAug 1, 2000
Vane cell pump
ZAHNRADFABRIK FRIEDRICHSHAFEN7 citations73
US4443169AApr 17, 1984
Gear pump
ZAHNRADFABRIK FRIEDRICHSHAFEN14 citations73
US4416598ANov 22, 1983
Rotary vane pump with pressure biased flow directing end plate
ZAHNRADFABRIK FRIEDRICHSHAFEN16 citations73
US4385870AMay 31, 1983
Radial piston pump
ZAHNRADFABRIK FRIEDRICHSHAFEN8 citations73
US4772190ASep 20, 1988
Vane cell pump having resilient sealing means biasing the pressure plate
ZAHNRADFABRIK FRIEDRICHSHAFEN10 citations69
US6179157B1Jan 30, 2001
Container
ZAHNRADFABRIK FRIEDRICHSHAFEN6 citations62
US6033190AMar 7, 2000
Flat faced bearing housing engaging flat faced pump rotor housing
ZAHNRADFABRIK FRIEDRICHSHAFEN3 citations62
US4676333AJun 30, 1987
Servo steering for vehicles
ZAHNRADFABRIK FRIEDRICHSHAFEN2 citations62
US4553908ANov 19, 1985
High pressure pump with a flow control valve
ZAHNRADFABRIK FRIEDRICHSHAFEN5 citations62
US4380272AApr 19, 1983
Oil reservoir particularly for hydraulic steering system
ZAHNRADFABRIK FRIEDRICHSHAFEN3 citations62
US4310289AJan 12, 1982
Hydraulically operated steering system with pressure control
ZAHNRADFABRIK FRIEDRICHSHAFEN2 citations62
US5795142AAug 18, 1998
Hydraulically balanced vane cell pump
ZAHNRADFABRIK FRIEDRICHSHAFEN5 citations60
US5086942AFeb 11, 1992
Cover with locking device
ZAHNRADFABRIK FRIEDRICHSHAFEN2 citations59
US5800135ASep 1, 1998
Sliding vane pump using a drive shaft as a flow divider for enhanced oil circulation
ZAHNRADFABRIK FRIEDRICHSHAFEN1 citations52
US6004110ADec 21, 1999
Displacement pump
ZAHNRADFABRIK FRIEDRICHSHAFEN0 citations31