Issued Patents All Time
Showing 25 most recent of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7195029 | Inflate and deflate valve | — | 2007-03-27 |
| 7171977 | Combination pressure relief and topping valve | Bob Venne | 2007-02-06 |
| 7025080 | Cross over valve | Robert Venne | 2006-04-11 |
| 7013911 | Internal cross over valve | Corey Krantz | 2006-03-21 |
| D470570 | Topping valve | — | 2003-02-18 |
| 6260570 | Puncture disc raft inflation valve having a one-piece valve body | Kurt Drewelow | 2001-07-17 |
| 6098320 | Front end loader attachment including forks and grapple for digging, dislodging and lifting materials | — | 2000-08-08 |
| 6071084 | Aspirator | Kurt Drewelow, Robert Venne, Alan Bohlig | 2000-06-06 |
| 6036169 | Self alignable threaded cap and threaded pressure relief valve | — | 2000-03-14 |
| 6009895 | Free rotating inlet check valve for inflatable devices | Kurt Drewelow, Russell G. Tretter | 2000-01-04 |
| 6007049 | High pressure gas valve having an inverted stem/seat design and a soft seated removable stem cartridge | Kurt Drewelow, Claes Granfelt | 1999-12-28 |
| 5971016 | Super high flow pressure relief valve | Russell G. Tretter | 1999-10-26 |
| 5860669 | Ball-exchange trailer hitch system | Michael Nelson, Kurt Drewelow | 1999-01-19 |
| 5741022 | Ball-exchange trailer hitch | Michael Nelson, Kurt Drewelow | 1998-04-21 |
| 5647390 | Thermal relief valve with improved bayonet | — | 1997-07-15 |
| 5570897 | Portable quick hitching device | — | 1996-11-05 |
| 5495865 | Temperature relief valve with thermal trigger | Kurt Drewelow | 1996-03-05 |
| 5458151 | Crash proof solenoid controlled valve with manual override valve | — | 1995-10-17 |
| 5341844 | Crash proof solenoid controlled valve with manual override valve | Michael R. Baird | 1994-08-30 |
| 5197671 | Pressure relief valve with thermal trigger and movable seal plug | Michael R. Baird | 1993-03-30 |
| 5197710 | Crash proof solenoid controlled valve for natural gas powered vehicles | Peter Nelson | 1993-03-30 |
| 5193580 | Crash proof solenoid controlled valve with manual override valve | Michael R. Baird | 1993-03-16 |
| 5161738 | Pressure and temperature relief valve with thermal trigger | — | 1992-11-10 |
| 4959034 | Puncture disc inflation valve with improved cutting bayonet | — | 1990-09-25 |
| 4595374 | Raft inflation valve | — | 1986-06-17 |