| 摘要 |
1532776 Abrasive tools M MARTON 5 Jan 1976 [26 Nov 1975] 12491/78 Divided out of 1532772 Heading B3D The subject matter of this Specification is substantially identical with that described in Specification 1,532,772 but the main claim is directed to a loader for use in affixing an abrasive sanding disc to a back-up pad of a vacuum sander comprising a loader housing of circular configuration having a bottom wall and a peripheral side wall, a vertical centring pin mounted in the centre of the bottom wall, spring means concentrically positioned in association with the centring pin, and a centring plate mounted on the spring means and having a surface contour conforming the surface contour of the bottom of a pad and paper being loaded therein. |
