Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1988-12-16
1990-05-15
Parker, Roscoe V.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
51268, B24B 2300, B24B 5504
Patent
active
049246356
ABSTRACT:
In a portable machine tool comprising a protective hood mounted by means of a holding part for rotation on a clamping neck of the portable machine tool, in order to prevent unintentional adjustment of the protective hood, it is proposed that the holding part of the protective hood and a locking part facing the holding part and held in a rotationally fixed manner on a grinder housing in the region of the clamping neck be provided with locking elements which can be brought into engagement with one another, that the holding part or locking part comprise at least one locking element and the respective other part several locking elements, and that the locking elements be disengageable against the force of a spring member.
REFERENCES:
patent: 1850137 (1932-03-01), Pursell
patent: 3969856 (1976-07-01), Zerrer
patent: 4059930 (1977-11-01), Alessio
patent: 4060940 (1977-12-01), DeWitt
patent: 4574532 (1986-03-01), Haberle
Huttle Maschinenbau, Part A, vol. 28, p. 144.
Blutharsch Walter
Rudolf Boris
C. & E. Feini GmbH & Co.
Parker Roscoe V.
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