| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 11 | |
| #2 | United Kingdom | 2 | |
| #3 | Canada | 1 | |
| #4 | Germany | 1 | |
| #5 | EPO (European Patent Office) | 1 | |
| #6 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machines | |
| #3 | Engines, pumps and turbines | |
| #4 | Control |
| # | Technology | |
|---|---|---|
| #1 | Servomotors | |
| #2 | Unspecified technologies | |
| #3 | Springs | |
| #4 | Pistons and sealings | |
| #5 | Machines | |
| #6 | Unspecified technologies | |
| #7 | Venting or aerating devices | |
| #8 | Control or regulating systems |
| # | Name | Total Patents |
|---|---|---|
| #1 | Herner Ray H | 7 |
| #2 | Bolt David J | 5 |
| #3 | Wright Lee A | 5 |
| #4 | A Wright Lee | 1 |
| #5 | Rediess David J | 1 |
| #6 | Bethke Richard J | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US5224413A | Impact dampening means for power cylinders | |
| US5154207A | Pressure control valve and transducer package | |
| US5424941A | Apparatus and method for positioning a pneumatic actuator | |
| US4825746A | Universal power cylinder | |
| US4726393A | Power valve assembly | |
| US4409886A | Self-returning cylinder | |
| GB1448548A | Impact damping means for fluid actuators | |
| US3913460A | Impact damping means for fluid cylinders | |
| CA988109A | Impact dampening means for fluid cylinders | |
| US3648568A | Signal valve | |
| US3620016A | Machine control system | |
| US3603348A | Valve improvements |