Rock core drill bit
OwnerWerner Britten, Hans-Werner Bongers-Ambrosius +1inventors
InventorsWerner Britten, Hans-Werner Bongers-Ambrosius, Steven Moseley
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Abstract
A core drill bit (1) for working brittle material has an axially extending tubular shaft (2) with a rotation driver (4) coaxially fitted to a trailing end portion (3a) and a plurality of had material inserts (5a, 5b) arranged on the opposite open leading end portion (3b), which are formed with a defined cutting edge, whereby each individual hard material insert (5a, 5b) is fitted on precisely one intermediate carrier members (6a, 6b) associated therewith, which is fitted on the leading open end portion (3b) of the tubular shaft (2).
Claims8
A core drill bit for working brittle materials such as rock, concrete and masonry comprises an axially extending tubular shaft (2) having an open leading end (3b) and a trailing end (3a), a coaxial rotation driver secured to the trailing end (3a) of said tubular shaft (2) and a plurality of hard material inserts (5a, 5b) arranged on the leading end thereof, said hard material inserts having a defined cutting edge, each of said hard material inserts (5a, 5b) is fitted on a separate intermediate carrier members (6a, 6b) associated therewith, and said intermediate carrier members are fitted to the leading end (3b) of said tubular shaft.
Dependencies are inferred from the claim text.