| Patent Number |
Title Of Patent |
Date Issued |
| 6488263 |
Valve stem and method of manufacture; improved stem packing |
December 3, 2002 |
| A valve stem has a thickness of hardfaced material on its outer diameter in the area contacting the stem packing where the seal is formed which prevents corrosion, erosion and/or scratching of the valve stem, thereby preventing formation of leak paths. A valve packing comprises a vertica |
| 6386230 |
Position sensing system for butterfly valves |
May 14, 2002 |
| A butterfly valve comprises a valve housing, a valve member mounted within the valve housing, and a valve stem supporting the valve member within the valve housing for rotation between open and closed positions. At least one magnet is mounted on the valve stem for rotation with the valve |
| 6276393 |
Position sensing system for butterfly valves |
August 21, 2001 |
| A butterfly valve comprises a valve housing, a valve member mounted within the valve housing, and a valve stem supporting the valve member within the valve housing for rotation between open and closed positions. At least one magnet is mounted on the valve stem for rotation with the valve |
| 6250604 |
Valve stem and method of manufacturing, improved stem packing |
June 26, 2001 |
| A valve stem has a thickness of hardfaced material on its outer diameter in the area contacting the stem packing where the seal is formed which prevents corrosion, erosion and/or scratching of the valve stem, thereby preventing formation of leak paths. A valve packing comprises a vertica |
| 6195890 |
Method of making a valve stem |
March 6, 2001 |
| A valve stem has a thickness of hardfaced material on its outer diameter in the area contacting the stem packing where the seal is formed which prevents corrosion, erosion and/or scratching of the valve stem, thereby preventing formation of leak paths. |
| 6182690 |
Position sensing system for butterfly valves |
February 6, 2001 |
| A butterfly valve comprises a valve housing, a valve member mounted within the valve housing, and a valve stem supporting the valve member within the valve housing for rotation between open and closed positions. At least one magnet is mounted on the valve stem for rotation with the valve |
| 6068018 |
Valve stem and method of manufacture |
May 30, 2000 |
| A valve stem has a thickness of hardfaced material on its outer diameter in the area contacting the stem packing where the seal is formed which prevents corrosion, erosion and/or scratching of the valve stem, thereby preventing formation of leak paths. |
| 5931044 |
Torque/position transducer |
August 3, 1999 |
| A torque/position transducer is positioned between the valve stem of a valve and a valve operator and includes a body section including an input lug mated with the output lug of the valve operator and an output lug mated with the valve stem of the valve. Strain gauges mounted on the body |
| 5722286 |
Torque/position transducer |
March 3, 1998 |
| A torque/position transducer is positioned between the valve stem of a valve and a valve operator adapted to open and close the valve and includes a body section including an input lug adapted for mating the engagement with the output lug of the valve operator and an output lug adapt |
