Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10072652 | Reciprocating positive displacement pump with electric reversing motor | Timothy S. Roman | 2018-09-11 |
| 8392028 | Distributed monitoring and control fluid handling system | Christopher M. Lange, William C. Scherer, Fred A Sutter, Gary Parnes | 2013-03-05 |
| 8299373 | Display module | Derek R. Shaw, John C. Holman, Christopher M. Lange, Nicholas Long, Michael L. Kashmark | 2012-10-30 |
| D593962 | Control module | Daniel P. Ross | 2009-06-09 |
| 7089958 | Damper vane | Robert Schlosser, Robert C. Knutson, Dennis R. Grabowski | 2006-08-15 |
| 7025672 | Bi-directional connections for daisy-chained dampers | Robert Schlosser, Marvin D. Nelson, Robert C. Knutson, Dennis R. Grabowski | 2006-04-11 |
| 7021072 | Current control loop for actuator and method | Scott McMillan | 2006-04-04 |
| 6997799 | Damper including a stepper motor | Scott McMillan | 2006-02-14 |
| 6979965 | Spring return actuator for a damper | Scott McMillan, Christopher M. Lange | 2005-12-27 |
| 6954044 | Electric motor with speed control | Scott McMillan | 2005-10-11 |
| 6940241 | Circuit using current limiting to reduce power consumption of actuator with DC brush motor | Christopher M. Lange | 2005-09-06 |
| 6880799 | Self-adjusting system for a damper | — | 2005-04-19 |
| 6822409 | Circuit using current limiting to reduce power consumption of actuator with DC brush motor | Christopher M. Lange | 2004-11-23 |
| 6593716 | Circuit using current limiting to reduce power consumption of actuator with DC brush motor | Christopher M. Lange | 2003-07-15 |
| 6441693 | Circuit for voltage to linear duty cycle conversion | Christopher M. Lange | 2002-08-27 |
| 6369540 | Bypass circuit for use in DC brush motor control | Christopher M. Lange | 2002-04-09 |