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Inventor: Welch, Jr.; Johnnie C.
Address: Arlington, TX
No. of patents: 2
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 7553258 |
Excavation machine with constant power output control for torque-converter driven working elemen |
June 30, 2009 |
| A controller for crawlers of a trencher receives an indication of the speed of an engine and the speed of an output of a torque converter coupling the engine to an excavating element for digging a trench. Based on the ratio of the speed of the engine and the speed of the output of th |
| 6547337 |
Trencher with foldable rock saw wheel |
April 15, 2003 |
| A trencher with a rock saw wheel has a foldable section that may be pivoted to one side during transport of the trencher on a truck or trailer, in order to decrease the overall height of the trencher during transport, or can be removed to reduce transport weight. |
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