ROBERT FRANCIS VALLI
Vehicle Board in Philipsburg, PA
License number
Pennsylvania MV102345L
Category
Vehicle Board
Type
Vehicle Salesperson
Address
Address
Philipsburg, PA 16866
Professional information
Vibration Dampened Table Bushing Assembly For Rotary Drilling Machines
US Patent:
5119890, Jun 9, 1992
Filed:
Jul 23, 1990
Appl. No.:
7/561543
Inventors:
Robert F. Valli - Philipsburg PA
Assignee:
Reichdrill, Inc. - Philipsburg PA
International Classification:
F16C 2706
US Classification:
175 57
Abstract:
A table bushing is used with a rotary drilling machine of the type having a table through which a drill steel passes. The table bushing uses an automotive tire, or like resilient annular tube, to center the table bushing within an oversized hole in the table. The tire, the pressure of which can be varied according to the operating conditions, dampens vibrations generated while drilling under high thrust loads.