Sanding apparatus with a brake system

Details Sanding apparatus with a brake system Sanding apparatus with a brake system

1997-03-07

1998-09-29

Rose, Robert A.

Abrading

Machine

Rotary tool

451357, B24B 2303

Patent

active

058139036

ABSTRACT:
A sander (1) has a motor (3) with a motor shaft (4) mounted in a bearing box (11) via an eccentric ball bearing (10). Coupled to the bearing box (11) is a pad (12) having a bulged square shape in a horizontal cross section. The sander (1) further includes a skirt (6) with an opening (6a) on which a synthetic (polyurethane rubber) brake ring (17) is mounted. The brake ring (17) comprises an outer peripheral portion (18) and a plurality of contact portions (19) disposed at regular intervals around the outer peripheral portion (18). Each contact portion (19) is bulged toward the center of the brake ring (17) with both ends connected to the outer peripheral portion (18). Also, the contact portions (19) are elastic so as to deform in the radial direction. The contact portions (19) together form a through-hole (21) which is slightly smaller than the bearing box (11) for receiving the bearing box.

REFERENCES:
patent: 5018314 (1991-05-01), Fushiya et al.
patent: 5317838 (1994-06-01), Bourner
patent: 5384984 (1995-01-01), Smith
patent: 5392568 (1995-02-01), Howard, Jr. et al.

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