Inventor
HAYAKAWA HISASHI
JP17 patents
⚠️ This page may combine multiple inventors who share the name “HAYAKAWA HISASHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NTN TOYO BEARING CO LTD
14 patentsUS5482262AJan 9, 1996
Hydraulic autotensioner
NTN TOYO BEARING CO LTD53 citations96
US4940447AJul 10, 1990
Autotensioner for adjusting the tension of a timing belt
NTN TOYO BEARING CO LTD80 citations94
US7775921B2Aug 17, 2010
Chain tensioner
NTN TOYO BEARING CO LTD31 citations92
US6935978B2Aug 30, 2005
Chain tensioner
NTN TOYO BEARING CO LTD38 citations92
US4950209AAug 21, 1990
Autotensioner
NTN TOYO BEARING CO LTD31 citations92
US4904230AFeb 27, 1990
Belt autotensioner
NTN TOYO BEARING CO LTD39 citations92
US7775923B2Aug 17, 2010
Chain tensioner for two-wheeled vehicle engine
NTN TOYO BEARING CO LTD11 citations84
US7677999B2Mar 16, 2010
Chain tensioner
NTN TOYO BEARING CO LTD12 citations84
US7527572B2May 5, 2009
Chain tensioner
NTN TOYO BEARING CO LTD17 citations84
US7037229B2May 2, 2006
Hydraulic tensioner
NTN TOYO BEARING CO LTD12 citations84
US7559863B2Jul 14, 2009
Chain tensioner
NTN TOYO BEARING CO LTD16 citations82
US4986796AJan 22, 1991
Hydraulic autotensioner
NTN TOYO BEARING CO LTD20 citations81
US5632474AMay 27, 1997
Compact hydraulic autotensioner with return spring mounted around a sleeve
NTN TOYO BEARING CO LTD13 citations74
US5607368AMar 4, 1997
Autotensioner
NTN TOYO BEARING CO LTD14 citations72