ROLLER CUTTERS AS USED ON

Brand	Owner	Address	Description
DUROCUTTER	ROBBINS COMPANY, THE	HAZEL AND SCHOOL STREETS ATTLEBORO MA	roller cutters as used on tunneling and mining machines;Cutter;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

An expandable drill bit comprises a body for mounting on a support string and two roller cutters mounted on the body. The cutters are movable between a smaller diameter first configuration and a larger diameter second configuration. In one embodiment the bit is adapted to drill with the cutters in both the first and second configurations.