Issued Patents All Time
Showing 1–25 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6681943 | Railcar draft gear assembly and system | Ronald E. Barker, Charles E. Burkhart, Marlin E. Clark, John F. Deppen, V. Terrey Hawthorne +3 more | 2004-01-27 |
| 6446820 | Railcar draft gear assembly and system | Ronald E. Barker, Charles E. Burkhart, Marlin E. Clark, John F. Deppen, V. Terrey Hawthorne +3 more | 2002-09-10 |
| 6360906 | Slackless railway coupler with buff/draft gear | John J. Steffen | 2002-03-26 |
| 6324995 | Railway car center filler plate | Douglas L. Compton, Leonard D. Thomason, Jeffery R. Ladendorf, Brian A. Toussaint | 2001-12-04 |
| 6305298 | Light weight draft sill | Douglas L. Compton, Brian A. Toussaint, Ronald G. Butler, Jeffery R. Ladendorf | 2001-10-23 |
| 6305561 | Draft sill with locking center pin | Jeffery R. Ladendorf, John F. Oesch | 2001-10-23 |
| 6167813 | Tapered wear liner and articulated connector with tapered wear liner | John J. Steffen | 2001-01-02 |
| 5931101 | Light weight draft sill | Douglas L. Compton, Brian A. Toussaint, Ronald G. Butler | 1999-08-03 |
| 5850929 | Ring seat removal system for a railcar articulated connector | John J. Steffen | 1998-12-22 |
| 5833086 | Alliance coupler lock lifter securing arm | — | 1998-11-10 |
| 5809898 | Ring seat removal system for a railcar articulate connector | John J. Steffen | 1998-09-22 |
| 5809899 | Draft sill and wheel truck connection | John J. Steffen, Franklin S. McKeown, Jr. | 1998-09-22 |
| 5582307 | Railway car coupler knuckle | V. Terry Hawthorne, George G. Schwinn | 1996-12-10 |
| 5454475 | Lubrication means for slack-free railcar connections | — | 1995-10-03 |
| 5312007 | Slackless railway coupler with draft/buff gear | John J. Steffen, David John Jarvis, David Greg Anderson, Ronald G. Butler | 1994-05-17 |
| 5305899 | Coupler follower with elastomeric wear pad for preventing metal to metal contact between the follower and the center sill side walls | — | 1994-04-26 |
| 5232106 | Railway drawbar with fabricated section | V. Terrey Hawthorne | 1993-08-03 |
| 5193699 | Center sill with short yoke member for converting from coupler to drawbar arrangement without modifying center sill | John J. Steffen | 1993-03-16 |
| 5133467 | Wedge shim and follower block for a railcar articulated connector | V. Terrey Hawthorne, John F. Oesch | 1992-07-28 |
| 5115926 | Coupler member retention in a railway vehicle | — | 1992-05-26 |
| 5035338 | Slackless railcar connections with extractable wedge | Russell G. Altherr | 1991-07-30 |
| 5002192 | Bearing arrangement for railway drawbar connection | — | 1991-03-26 |
| 5000330 | Railway vehicle rotary drawbar arrangement | John W. Kaim, Russell G. Altherr | 1991-03-19 |
| 4976362 | Pulling lug for railway vehicle coupler | — | 1990-12-11 |
| 4946052 | Gravity wedge for slackless railcar connections | John W. Kaim | 1990-08-07 |