Assignee
HARTWELL CORP
US116 patents
Top patents by PatentIndex Score
US6343815B1Feb 5, 2002
Cinch-up latch
HARTWELL CORP185 citations99
US5620212AApr 15, 1997
Low profile hook latch assembly
HARTWELL CORP182 citations98
US4828299AMay 9, 1989
Latch
HARTWELL CORP129 citations98
US5413391AMay 9, 1995
Self-closing latch
HARTWELL CORP125 citations97
US5984382ANov 16, 1999
Extended reach latch
HARTWELL CORP173 citations96
US5754412AMay 19, 1998
Circuit board standoff connector
HARTWELL CORP108 citations96
US5213381AMay 25, 1993
Draw latch
HARTWELL CORP87 citations96
US4786225ANov 22, 1988
Stand-off fastener
HARTWELL CORP71 citations96
US4183564AJan 15, 1980
Externally accessible adjuster for flush latches
HARTWELL CORP57 citations96
US4116479ASep 26, 1978
Adjustable flush mounted hook latch
HARTWELL CORP133 citations96
US4114509ASep 19, 1978
Fastener plunger entry resistance means
HARTWELL CORP75 citations96
US3964364AJun 22, 1976
Initially single piece rotatable fastener
HARTWELL CORP69 citations96
US6513841B1Feb 4, 2003
Blowout latch
HARTWELL CORP63 citations95
US4602812AJul 29, 1986
Adjustable double hook latch
HARTWELL CORP92 citations95
US4502193AMar 5, 1985
Stand-off fastener
HARTWELL CORP55 citations95
US4365831ADec 28, 1982
Channel latch
HARTWELL CORP58 citations95
US6042156AMar 28, 2000
Overcenter double jaw latch mechanism
HARTWELL CORP62 citations94
US5820175AOct 13, 1998
Self-closing latch
HARTWELL CORP76 citations94
US5765883AJun 16, 1998
Adjustable pressure relief latch
HARTWELL CORP99 citations94
US4318557AMar 9, 1982
Latching mechanism
HARTWELL CORP80 citations94
US6866226B2Mar 15, 2005
Pressure responsive blowout latch
HARTWELL CORP58 citations93
US6279971B1Aug 28, 2001
Latch with sensor
HARTWELL CORP123 citations93
US4986576AJan 22, 1991
Locking door latch
HARTWELL CORP50 citations93
US4911486AMar 27, 1990
Tamper proof slide bolt locking apparatus
HARTWELL CORP42 citations93
US4570290AFeb 18, 1986
Hinge having a laterally outwardly extending flat spring
HARTWELL CORP47 citations93
US4455711AJun 26, 1984
Hinge having a laterally outwardly extending flat spring
HARTWELL CORP43 citations93
US7255376B2Aug 14, 2007
Pressure sensing dead bolt
HARTWELL CORP39 citations92
US7252311B2Aug 7, 2007
Motor driven latch
HARTWELL CORP40 citations92
US7131672B2Nov 7, 2006
Latch mechanism
HARTWELL CORP20 citations92
US6913297B2Jul 5, 2005
Rotary latch mechanism
HARTWELL CORP49 citations92
US6866227B2Mar 15, 2005
Pressure responsive blowout latch with reservoir
HARTWELL CORP39 citations92
US6755448B2Jun 29, 2004
Blowout latch
HARTWELL CORP81 citations92
US6095573AAug 1, 2000
Translating handle assembly
HARTWELL CORP28 citations92
US5016931AMay 21, 1991
Latching mechanism having a pre-adjusted load
HARTWELL CORP31 citations92
US4826221AMay 2, 1989
Tension and shear latching mechanism
HARTWELL CORP53 citations92
US4674930AJun 23, 1987
Stand-off fastener
HARTWELL CORP41 citations92
US4307905ADec 29, 1981
Toggle latch assembly
HARTWELL CORP29 citations92
US4220364ASep 2, 1980
Flush type latches
HARTWELL CORP50 citations92
US3988808ANov 2, 1976
Readily mounted separable fastener
HARTWELL CORP110 citations92
US7185926B2Mar 6, 2007
Preloaded latch mechanism
HARTWELL CORP24 citations91
US5551737ASep 3, 1996
Single-point self-closing latch
HARTWELL CORP23 citations91
US10392830B2Aug 27, 2019
Clevis sensing lock
HARTWELL CORP12 citations90
US6629712B2Oct 7, 2003
Extendable latch
HARTWELL CORP21 citations90
US6189832B1Feb 20, 2001
Permanently connected remote latch mechanism
HARTWELL CORP48 citations90
US6123370ASep 26, 2000
Increased strength dogging mechanism
HARTWELL CORP44 citations90
US4530529AJul 23, 1985
Externally accessible adjuster for flush latches
HARTWELL CORP47 citations90
US7578475B2Aug 25, 2009
Pressure responsive blowout latch
HARTWELL CORP35 citations89
US4906036AMar 6, 1990
Pivoting adjustment screw
HARTWELL CORP30 citations89
US6382690B1May 7, 2002
Keeper mechanism
HARTWELL CORP33 citations88
US6059231AMay 9, 2000
Handle assembly for an aircraft door or the like
HARTWELL CORP44 citations88
Showing the top 50 of 116 patents by PatentIndex Score.