Inventor
Howard Sommerfeld
Inventor
Oak Forest, IL, US
Overview
Patents· 44 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B61Gprimary
B61GCouplings32%
B60TVehicle brake control systems or parts thereof19%
Y10TTechnical subjects covered by former us classification15%
B61HBrakes or other retarding devices specially adapted for rail vehicles14%
F16LPipes7%
G05GControl devices or systems insofar as characterised by mechanical features only4%
F16DCouplings for transmitting rotation3%
B43LArticles for writing or drawing upon1%
B60DVehicle connections1%
F16CShafts1%
PatentTitleYear
9,187,066'Electrically driven set and release hand brake for rail cars'20158,469,464'Parking brake assembly for railway vehicle brake system'20138,307,955'Mechanical release of release holding mechanism for hand brake'20128,256,584'Parking brake assembly for railway vehicle brake system'20128,230,985'Parking brake assembly for railway vehicle brake system'20128,070,002'Two piece draft gear housing having an integral yoke'20118,070,001'Two piece draft gear housing having a integral yoke'20118,006,815'Parking brake assembly for railway vehicle brake system'20117,900,785'Taper under tapered plate to increase side force on the movable plate'20117,802,662'Slack adjuster for railway vehicle brake rigging'20107,588,154'Two piece draft gear housing having an integral yoke'20097,540,387'Draft gear assembly'20097,487,695'Release holding mechanism for ASR hand brake'20097,467,812'Brake hose lifting apparatus'20087,467,724'Locking arrangement for a bearing assembly of a male connection member for an articulated coupling apparatus'20087,461,867'Brake hose lifting apparatus'20087,461,869'Air brake hose coupling with locking device'20087,448,651'Brake hose lifting apparatus'20087,419,065'Light weight high capacity friction draft gear assembly'20087,384,072'Brake hose lifting apparatus'20087,311,215'Positional variable orifice pin for hydraulic pressure control in a draft gear'20077,287,655'Energy dissipating elastomer damper'20077,281,635'Friction draft gear housing having a removable end wall'20077,264,130'Housing for long travel high capacity friction draft gear assembly'20077,258,243'Arrangement for preventing energy absorbing material degradation on draft gears'20077,216,940'Adaptation of TMX for axle motion III truck application'20077,175,036'Long travel high capacity friction draft gear assembly'20077,156,471'Two-stage cylinder for applying automatic set and release hand brake'20077,097,055'Long buff short draft travel draft gear for use in a 24.625 inch pocket'20067,093,694'Release hold mechanism with gravity weighted indicator flag'20067,021,430'Release hold mechanism for a hand brake having a quick release mechanism'20067,011,190'Hand brake assembly for an ankle motion III truck bogie'20066,981,599'High capacity shear mechanism'20066,923,331'High capacity draft gear'20056,702,073'Hand brake lever interface for single-cylinder truck-mounted railway car brake'20046,325,465'Quick release mechanism for a railway car hand brake'20016,298,749'Jointed hand brake release handle'20015,529,194'Variable angle friction clutch mechanism for a draft gear assembly'19965,501,347'Variable angle friction clutch mechanism for a draft gear assembly'19965,495,957'Variable angle friction clutch mechanism for a draft gear assembly'19965,452,814'Variable angle friction clutch mechanism for a draft gear assembly'19955,443,170'Variable angle friction clutch mechanism for a draft gear assembly'19955,152,409'Draft gear assembly'19924,645,187'Draft gear assembly'1987Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1987–2015Based in Oak Forest, IL, US· patent location history
1992–2001Patents assigned to WESTINGHOUSE AIR BRAKE CO (7)· patent assignee history
2001–2006Patents assigned to WESTINGHOUSE AIR BRAKE TECH CORP (6)· patent assignee history
2006–2013Patents assigned to WABTEC HOLDING CORP (28)· patent assignee history
2006–2013Patents assigned to SOMMERFELD HOWARD (6)· patent assignee history
2011–2013Patents assigned to MEYER DAVID (5)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| WABTEC HOLDING CORP | 28 | 2006–2013 |
| WESTINGHOUSE AIR BRAKE CO | 7 | 1992–2001 |
| SOMMERFELD HOWARDself | 6 | 2006–2013 |
| WESTINGHOUSE AIR BRAKE TECH CORP | 6 | 2001–2006 |
| MEYER DAVID | 5 | 2011–2013 |
Locations
| Location | Patents | Span |
|---|---|---|
| Oak Forest, Illinois, US | 44 | 1987–2015 |