Cutting by use of rotating axially moving tool – With product handling or receiving means – Ejector
Reexamination Certificate
2003-06-06
2008-05-13
Carter, Monica (Department: 3722)
Cutting by use of rotating axially moving tool
With product handling or receiving means
Ejector
C408S058000, C408S059000, C408S204000, C408S207000, C279S143000, C173S073000, C173S198000
Reexamination Certificate
active
07371034
ABSTRACT:
A drilling attachment for use in wet and dry drilling operations includes a housing having first and second fluid conduits, and a drive shaft mounted within the housing and having fluid transmitting first and second end portions in fluid communication with a respective first and second fluid conduit. In one embodiment, at any time one end of the drive shaft is coupled to a drive unit and the other end of the drive shaft is coupled to a core drill bit. In a dry drilling operation, dust is extracted from the core of the drill bit, is passed through the drive shaft and exits the housing via one of the fluid conduits. In a wet drilling operation, fluid such as water is passed through the other of the fluid conduits, through the drive shaft and into the core of the drill bit.
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Carter Monica
Tarolli, Sundheim Covell & Tummino LLP
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