B - Operations – Transporting – 24 – B
Patent
B - Operations, Transporting
24
B
B24B 3/33 (2006.01) B23Q 11/00 (2006.01) B24B 41/00 (2006.01) B24D 7/00 (2006.01) B24D 7/18 (2006.01)
Patent
CA 2136998
2136998 9325346 PCTABS00028 This invention relates to a vibration dampening grinding cup (1) for handheld grinding machines for the grinding of hard metal buttons on button bits, comprising a grinding head (2) and a shaft (3) made with a common axial channel (4) for cooling medium, which distinguishes in that the shaft (3) is formed with a driver part (5) at its free end and an annular groove (6) between this part and the grinding head, and that a bushing (7) of rubber is arranged on the shaft adjacent to the grinding head, and a holder (10) for such a grinding cup, which distinguishes in that it comprises a substantially cylindrical socket (11) with an axial through channel (12), whose one end is connected with the rotor of the handheld grinding machine and through the other end of which the shaft (3) of the grinding cup (1) is intended to be entered for installing the driver part (5) of the shaft in a correspondingly formed driving part (13) in the channel of the socket and to be fastened through introduction of balls (14) situated in holes in the wall of the socket at the other end of the socket into the annular groove (6) of the shaft at the inner edge of the groove by means of a between two stops axially movable sleeve (15) arranged about the socket and biassed towards the other end of the socket by a spring, whereby the bushing with fastened grinding cup rests elastically against the socket and against the grinding head.
Fetherstonhaugh & Co.
Uniroc Ab
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