Inventor
Robert A. Van Fossen
Inventor
Auburn, IN, US
Overview
Patents· 7 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
F16Kprimary
F16KValves21%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests21%
Y10TTechnical subjects covered by former us classification21%
H01HElectric switches14%
F01MLubricating of machines or engines in general7%
G01LMeasuring force, stress, torque, work, mechanical power, mechanical efficiency, or fluid pressure7%
G05DSystems for controlling or regulating non-electric variables7%
PatentTitleYear
5,250,768'Float switch with snap action member'19935,091,612'Magnetically actuated proximity flow switch'19925,024,294'Differential pressure transducer'19914,754,920'Compact operator for gas control valves'19884,335,750'Reversing valve construction and piston head assembly therefor and methods of making the same'19824,324,273'Reversing valve construction and piston head assembly therefor and methods of making the same'19824,245,670'Reversing valve construction and piston head assembly therefor and methods of making the same'1981Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1981–1982Patents assigned to ROBERTSHAW CONTROLS CO (3)· patent assignee history
1981–1982Based in Richmond, VA, US· patent location history
1988Patents assigned to HAMILTON STANDARD CONTROLS (1)· patent assignee history
1988–1993Based in Auburn, IN, US· patent location history
1991–1993Patents assigned to JOHNSON SERVICE CO (3)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| JOHNSON SERVICE CO | 3 | 1991–1993 |
| ROBERTSHAW CONTROLS CO | 3 | 1981–1982 |
| HAMILTON STANDARD CONTROLS | 1 | 1988 |
Locations
| Location | Patents | Span |
|---|---|---|
| Auburn, IN, US | 4 | 1988–1993 |
| Richmond, Virginia, US | 3 | 1981–1982 |