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1. (WO1991017865) DUST COLLECTOR AND SHIELD FOR ROTARY GRINDER
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/017865 International Application No.: PCT/US1991/003093
Publication Date: 28.11.1991 International Filing Date: 06.05.1991
Chapter 2 Demand Filed: 13.12.1991
IPC:
B24B 55/10 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
24
GRINDING; POLISHING
B
MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
55
Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
06
Dust extraction equipment on grinding or polishing machines
10
specially designed for portable grinding machines, e.g. hand-guided
Applicants:
BUSER, John, Paul [US/US]; US
COURSON, Michael [US/US]; US
Inventors:
BUSER, John, Paul; US
COURSON, Michael; US
Agent:
BROWN, Carl, R.; Brown, Martin, Haller & McClain 110 West "C" Street Suite 1300 San Diego, CA 92101, US
Priority Data:
524,13016.05.1990US
Title (EN) DUST COLLECTOR AND SHIELD FOR ROTARY GRINDER
(FR) COLLECTEUR DE POUSSIERES ET PROTECTION POUR PONCEUSE ROTATIVE
Abstract:
(EN) A shield attachment (10) for fitting on a rotating grinder (34) that encloses and shields the rotating grinder disc or pad (50, 51), and provides a tangential exhaust port (30) for exhausting dust in moving air created by the rotating disc. The shield (10) has an encircling skirt (14) that rests on the work surface, making an enclosed air cavity around the rotating disc that shields against particles being radiated at high speeds and also contains the air with contaminating dust in its restricted passage to the exhaust. The shield (10) has flexible means (24) for allowing vertical movement of the skirt to assure an enclosed chamber, and has separate air holes (22) for providing air flow to the chamber to replace the air passing through the exhaust port.
(FR) Accessoire de protection (10) destiné à être monté sur une ponceuse rotative (34) renfermant et protégeant le disque ou le patin de la ponceuse rotative (50, 51), et présentant un orifice d'évacuation tangentiel (30) destiné à évacuer les poussières dans l'air en mouvement créées par le disque rotatif. La protection (10) comporte une jupe d'encerclement (14) reposant sur la surface d'usinage, ménageant une cavité d'air fermée autour du disque rotatif assurant une protection contre les particules émises à des vitesses élevées, et contenant également l'air chargé de poussières contaminantes dans son passage limité jusqu'à l'évacuation. La protection (10) comporte un moyen souple (24) permettant un mouvement vertical de la jupe de manière à ménager une chambre fermée, et elle comporte des trous d'air séparés (22) destinés à produire un écoulement d'air jusque dans la chambre afin de remplacer l'air passant à travers l'orifice d'évacuation.
Designated States: CA, JP
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
Publication Language: English (EN)
Filing Language: English (EN)