Inventor · disambiguated record
Howard Sommerfeld
Also filed as: SOMMERFELD HOWARD · SOMMERFELD HOWARD R
44 granted patents·4 pending applications·363 citations·filing 1984–2013
98Inventor score
Files withWABTEC HOLDING CORP23WESTINGHOUSE AIR BRAKE CO7WESTINGHOUSE AIR BRAKE TECH CORP6SOMMERFELD HOWARD5MEYER DAVID2
Top patents by PatentIndex Score
48 records- 0195US8006815B2Parking brake assembly for railway vehicle brake systemWABTEC HOLDING CORP·Filed 2008·Granted Aug 30, 2011·19 cites·18 claims
- 0293US7802662B2Slack adjuster for railway vehicle brake riggingWABTEC HOLDING CORP·Filed 2007·Granted Sep 28, 2010·22 cites·9 claims
- 0391US8230985B2Parking brake assembly for railway vehicle brake systemSOMMERFELD HOWARD·Filed 2011·Granted Jul 31, 2012·8 cites·13 claims
- 0487US8256584B2Parking brake assembly for railway vehicle brake systemSOMMERFELD HOWARD·Filed 2011·Granted Sep 4, 2012·6 cites·6 claims
- 0586US8469464B2Parking brake assembly for railway vehicle brake systemSOMMERFELD HOWARD·Filed 2011·Granted Jun 25, 2013·5 cites·21 claims
- 0680US7419065B2Light weight high capacity friction draft gear assemblyWABTEC HOLDING CORP·Filed 2006·Granted Sep 2, 2008·9 cites·20 claims
- 0780US4645187ADraft gear assemblyAMERICAN STANDARD INC·Filed 1984·Granted Feb 24, 1987·38 cites·16 claims
- 0877US7467724B2Locking arrangement for a bearing assembly of a male connection member for an articulated coupling apparatusWABTEC HOLDING CORP·Filed 2005·Granted Dec 23, 2008·6 cites·20 claims
- 0976US8070002B2Two piece draft gear housing having an integral yokeMEYER DAVID·Filed 2009·Granted Dec 6, 2011·6 cites·20 claims
- 1074US7467812B2Brake hose lifting apparatusWABTEC HOLDING CORP·Filed 2005·Granted Dec 23, 2008·5 cites·9 claims
- 1173US6325465B1Quick release mechanism for a railway car hand brakeWESTINGHOUSE AIR BRAKE TECH CORP·Filed 2000·Granted Dec 4, 2001·15 cites·22 claims
- 1271US7461869B2Air brake hose coupling with locking deviceWABTEC HOLDING CORP·Filed 2007·Granted Dec 9, 2008·5 cites·11 claims
- 1371US5529194AVariable angle friction clutch mechanism for a draft gear assemblyWESTINGHOUSE AIR BRAKE CO·Filed 1995·Granted Jun 25, 1996·23 cites·9 claims
- 1471US5443170AVariable angle friction clutch mechanism for a draft gear assemblyWESTINGHOUSE AIR BRAKE CO·Filed 1994·Granted Aug 22, 1995·21 cites·4 claims
- 1570US7588154B2Two piece draft gear housing having an integral yokeWABTEC HOLDING CORP·Filed 2005·Granted Sep 15, 2009·3 cites·12 claims
- 1670US7311215B2Positional variable orifice pin for hydraulic pressure control in a draft gearWABTEC HOLDING CORP·Filed 2005·Granted Dec 25, 2007·4 cites·20 claims
- 1769US7258243B2Arrangement for preventing energy absorbing material degradation on draft gearsWABTEC HOLDING CORP·Filed 2004·Granted Aug 21, 2007·12 cites·28 claims
- 1868US6702073B2Hand brake lever interface for single-cylinder truck-mounted railway car brakeWESTINGHOUSE AIR BRAKE TECH CORP·Filed 2002·Granted Mar 9, 2004·12 cites·18 claims
- 1968US5152409ADraft gear assemblyWESTINGHOUSE AIR BRAKE CO·Filed 1990·Granted Oct 6, 1992·28 cites·19 claims
- 2067US7216940B2Adaptation of TMX for axle motion III truck applicationWABTEC HOLDING CORP·Filed 2004·Granted May 15, 2007·8 cites·7 claims
- 2166US7264130B2Housing for long travel high capacity friction draft gear assemblyWABTEC HOLDING CORP·Filed 2004·Granted Sep 4, 2007·10 cites·26 claims
- 2266US7156471B2Two-stage cylinder for applying automatic set and release hand brakeWABTEC HOLDING CORP·Filed 2004·Granted Jan 2, 2007·10 cites·21 claims
- 2366US7093694B2Release hold mechanism with gravity weighted indicator flagWABTEC HOLDING CORP·Filed 2003·Granted Aug 22, 2006·11 cites·20 claims
- 2462US7287655B2Energy dissipating elastomer damperWABTEC HOLDING CORP·Filed 2005·Granted Oct 30, 2007·2 cites·14 claims
- 2561US8307955B2Mechanical release of release holding mechanism for hand brakeSOMMERFELD HOWARD R·Filed 2005·Granted Nov 13, 2012·3 cites·2 claims
- 2661US7021430B2Release hold mechanism for a hand brake having a quick release mechanismWESTINGHOUSE AIR BRAKE TECH CORP·Filed 2003·Granted Apr 4, 2006·7 cites·17 claims
- 2758US7487695B2Release holding mechanism for ASR hand brakeWABTEC HOLDING CORP·Filed 2004·Granted Feb 10, 2009·6 cites·15 claims
- 2858US6923331B2High capacity draft gearWESTINGHOUSE AIR BRAKE TECH CORP·Filed 2003·Granted Aug 2, 2005·6 cites·8 claims
- 2957US9187066B2Electrically driven set and release hand brake for rail carsBRABB DAVID C·Filed 2013·Granted Nov 17, 2015·2 cites·20 claims
- 3057US6981599B2High capacity shear mechanismWESTINGHOUSE AIR BRAKE TECH CORP·Filed 2003·Granted Jan 3, 2006·6 cites·10 claims
- 3156US7175036B2Long travel high capacity friction draft gear assemblyWABTEC HOLDING CORP·Filed 2004·Granted Feb 13, 2007·5 cites·11 claims
- 3255US8070001B2Two piece draft gear housing having a integral yokeMEYER DAVID·Filed 2009·Granted Dec 6, 2011·0 cites·6 claims
- 3355US7461867B2Brake hose lifting apparatusWABTEC HOLDING CORP·Filed 2007·Granted Dec 9, 2008·0 cites·11 claims
- 3455US7448651B2Brake hose lifting apparatusWABTEC HOLDING CORP·Filed 2007·Granted Nov 11, 2008·0 cites·7 claims
- 3555US7384072B2Brake hose lifting apparatusWABTEC HOLDING CORP·Filed 2007·Granted Jun 10, 2008·0 cites·5 claims
- 3655US5452814AVariable angle friction clutch mechanism for a draft gear assemblyWESTINGHOUSE AIR BRAKE CO·Filed 1995·Granted Sep 26, 1995·12 cites·8 claims
- 3752US7540387B2Draft gear assemblyWABTEC HOLDING CORP·Filed 2003·Granted Jun 2, 2009·3 cites·5 claims
- 3851US7011190B2Hand brake assembly for an ankle motion III truck bogieWESTINGHOUSE AIR BRAKE TECH CORP·Filed 2004·Granted Mar 14, 2006·5 cites·27 claims
- 3950US7281635B2Friction draft gear housing having a removable end wallWABTEC HOLDING CORP·Filed 2004·Granted Oct 16, 2007·2 cites·20 claims
- 4050US2006043731A1Locking device for an air brake hose coupling memberWABTEC HOLDING CORP·Filed 2005·Application pending·0 cites
- 4150US2009008352A1Draft gear assemblySOMMERFELD HOWARD·Filed 2008·Application pending·0 cites
- 4248US7097055B2Long buff short draft travel draft gear for use in a 24.625 inch pocketSOMMERFELD HOWARD·Filed 2004·Granted Aug 29, 2006·1 cites·13 claims
- 4347US7900785B2Taper under tapered plate to increase side force on the movable plateWABTEC HOLDING CORP·Filed 2008·Granted Mar 8, 2011·0 cites·15 claims
- 4442US5501347AVariable angle friction clutch mechanism for a draft gear assemblyWESTINGHOUSE AIR BRAKE CO·Filed 1995·Granted Mar 26, 1996·6 cites·7 claims
- 4541US2005252874A1Taper under taper plate to increase side force on the movable plateKING DENNIS W·Filed 2005·Application pending·0 cites
- 4640US2008134826A1Mechanical release of release holding mechanism for hand brakeNATSCHKE SCOTT·Filed 2005·Application pending·0 cites
- 4739US5495957AVariable angle friction clutch mechanism for a draft gear assemblyWESTINGHOUSE AIR BRAKE CO·Filed 1995·Granted Mar 5, 1996·5 cites·4 claims
- 4834US6298749B1Jointed hand brake release handleWESTINGHOUSE AIR BRAKE CO·Filed 1998·Granted Oct 9, 2001·6 cites·16 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →