Patent ID: 6312322
Filing Date: 2001-11-06
Classification: B24B

Abstract:
A hand held grinder comprising:a hollow cowl (10);a vibration absorber (30) mounted in said cowl (10), said vibration absorber (30) including a longitudinal through hole (31) defined through a center thereof and being parallel to a central axis of said cowl (10), and a radial through hole (33) defined in said vibration absorber (30) and communicating with said longitudinal through hole (31);a socket (32) defined in said vibration absorber (30) and communicating with said longitudinal through hole (31) and said radial through hole (33);a transmission device (20) extending through said vibration absorber (30) and forming a pivot (21) pivotally received in said socket (32) of said vibration absorber (30), said transmission device (20) having a first end forming a hollow threaded shaft (22) and a second end forming a neck (23);a main shaft (40) eccentrically connecting and driving said transmission device (20), said main shaft (40) including an enlarged end (41) and a shank (43) extending from said enlarged end (41) along an axis of said main shaft (40), said enlarged end (41) having a diameter that is greater than that of said shank (43) and an end eccentrically containing an eccentric recess (42) to receive said neck (23) of said transmission device (20);a hollow central body (50) having a first end and a second end, said first end of said central body (50) attached to said cowl (10) and receiving said main shaft (40);a connecting shaft (60) attached to a free end of said shank (43) of said main shaft (40); anda hollow root (70) attached to said second end of said central body (50) and receiving said connecting shaft (60).