2 results found
Donald Mains Greendale, WI
Professions & Specialties
Excavator • Industrial Operator
Experience & Education
| United States Patent | Inventor | Appl. No. | Assignee |
|---|---|---|---|
|
#4031440 Jun 21, 1977 Filed: May 20, 1976 |
Edward H. Christian (Brookfield, WI) Donald M. Mains (Greendale, WI) James H. Treiber (Milwaukee, WI) | 5/688488 |
Bucyrus-Erie Company (South Milwaukee, WI) |
| International Classification: | H02P 700 | 318432 |
Patent:
Transient load damping circuit for excavator
Abstract:
A Ward-Leonard drive system for a dragline excavator includes a feedback circuit which connects to ...
Donald Mains Greendale, WI
Professions & Specialties
Excavator • Industrial Operator
Experience & Education
| United States Patent | Inventor | Appl. No. | Assignee |
|---|---|---|---|
|
#4358719 Nov 9, 1982 Filed: Jul 18, 1980 |
Richard G. Currier (West Allis, WI) Donald M. Mains (Greendale, WI) | 6/170183 |
Bucyrus-Erie Company (South Milwaukee, WI) |
| International Classification: | H02K 702 | 318161 |
Patent:
Peak power limiter system for excavator
Abstract:
A motor drive system for a mining shovel includes three a. c. motors which are driven by...