Inventor
VAN SPIJK JOHANNES GERARDUS LU
NL17 patents
⚠️ This page may combine multiple inventors who share the name “VAN SPIJK JOHANNES GERARDUS LU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
DOORNES TRANSMISSIE BV
15 patentsUS6280357B1Aug 28, 2001
Continuously variable transmission
DOORNES TRANSMISSIE BV24 citations92
US5941786AAug 24, 1999
Continuously variable transmission with at least two pumps connected in series/parallel
DOORNES TRANSMISSIE BV20 citations90
US5800299ASep 1, 1998
Continuously variable transmission
DOORNES TRANSMISSIE BV27 citations86
US5833445ANov 10, 1998
Rotary pump having a compensating coupling
DOORNES TRANSMISSIE BV8 citations73
US6312243B1Nov 6, 2001
Roller vane pump having straight line segments on the rotor
DOORNES TRANSMISSIE BV5 citations71
US6152711ANov 28, 2000
Roller vane pump having a suction port through the cam ring
DOORNES TRANSMISSIE BV8 citations71
US7431674B2Oct 7, 2008
Continuously variable transmission
DOORNES TRANSMISSIE BV7 citations65
US6962542B2Nov 8, 2005
Continuously variable transmission and pulley
DOORNES TRANSMISSIE BV5 citations62
US6835056B2Dec 28, 2004
Roller vane pump incorporating a bearing bush
DOORNES TRANSMISSIE BV2 citations61
US6464482B1Oct 15, 2002
Mechanically driven roller vane pump
DOORNES TRANSMISSIE BV3 citations61
US6413066B1Jul 2, 2002
Mechanically driven roller vane pump with aperture end parts providing for gradual pressure changes in the pump chambers
DOORNES TRANSMISSIE BV2 citations61
US6382924B1May 7, 2002
Mechanically driven roller vane pump with enlarged surface area of the apertures
DOORNES TRANSMISSIE BV1 citations61
US7175554B2Feb 13, 2007
Hydraulically controllable constant speed drive and method for the design thereof
DOORNES TRANSMISSIE BV3 citations60
US6652399B2Nov 25, 2003
Continuously variable transmission
DOORNES TRANSMISSIE BV2 citations60
US6375445B1Apr 23, 2002
Roller vane pump having a partly curved vane slot
DOORNES TRANSMISSIE BV1 citations60