Felt member as a technical accessory and process and apparatus for the manufacture thereof
OwnerJack Brandinventor
Life of this patent
Estimating the term…
Abstract
A felt member, in particular a felt ring as a technical accessory for polishing and grinding operations, characterized in that the felt member contains at least 35% of a natural fiber material and polishing grains of a grain size of below 1000 .mu.m are enclosed in cavities in the tangled structure of the natural fiber material.
Claims17
A process for the manufacture of a felt member, in particular a felt ring as a technical accessory for polishing and grinding operations, which comprises providing a felt blank with at least 35% wool or the like hair elements and with a stiffening or bracing means added thereto, including abrasive grains introduced into water at a level of concentration of up to 500 grams per liter of water to provide a working fluid, dipping the blank into the working fluid, connecting the blank to a vacuum and subjecting the blank to said vacuum at one side thereof and pressing the working fluid into the blank, and drying the blank.
Apparatus for the manufacture of a felt member, in particular a felt ring as a technical accessory for polishing and grinding apparatus, which comprises a felt blank with at least 35% wool or the like hair elements and with a stiffening or bracing means added thereto, a fluid vessel for holding a working fluid including abrasive grains introduced into water at a level of concentration of up to 500 grams per liter of water, a holder for holding the felt blank which can dip the felt blank into the working fluid, and conveyor conduit for a pressure fluid connected to the felt blank operative to subject the felt blank to a vacuum at one side thereof to press the working fluid into the blank.
Dependencies are inferred from the claim text.