Portable boring and welding machine

Metal working – Plural diverse manufacturing apparatus including means for... – Type of machine

Reexamination Certificate

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Details

C029S560000, C228S045000, C228S119000, C219S076100, C408S024000, C408S138000, C408S238000, C408S124000, C408S129000, C408S137000

Reexamination Certificate

active

07020942

ABSTRACT:
A portable boring and welding machine includes a tool shaft adapted to mount tools for boring and welding workpieces. The shaft extends along an axis and is driven by an electric motor. The motor and the shaft are connected by a helical gearwheel and worm pair, the helical gearwheel being connectable to the tool shaft, and the worm being connected to a drive shaft of the motor itself.

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patent: 6653589 (2003-11-01), Dolton et al.
patent: 244 733 (1998-08-01), None
Shigley et al., Mechanical Engineering Design, 4thed., 1993, McGraw-Hill, Inc., pp. 570, 632, and 648.

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