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Class Information
Number: 175/278
Name: Boring or penetrating the earth > Cutter element laterally shiftable below ground (e.g., expansible) > With shifting mechanism spring biased to operative position > With separate latch > Latch holds mechanism retracted > Latch return shifting mechanism to inoperative position
Description: Apparatus in which the movable latch member also acts on the mechanism to cause the mechanism to be moved to its inactive or inoperative position to permit retraction of the cutter element.

Patents under this class:

Patent Number Title Of Patent Date Issued
7823663 Expandable reamer Nov. 2, 2010

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