Mining or in situ disintegration of hard material – Hard material disintegrating machines – Sidewall-working
Patent
1987-09-03
1989-04-04
Weidenfeld, Gil
Mining or in situ disintegration of hard material
Hard material disintegrating machines
Sidewall-working
279 48, B23B 3104
Patent
active
048179728
ABSTRACT:
A collet chuck including a chuck body, a collet which is fitted into the chuck body thereof, a fastening nut for chucking a cutting tool which is screwed into the main body of the chuck when the fastening nut is attachably connected to the collet and the collet is adapted to be reduced in diameter and wherein an external flange is provided around the collet, a pair of internal flanges are provided on the fastening nut, and fitting of these flanges into one another permits the collet and the fastening nut to be detachably connected to one another while a pair of notched portions opposite each are formed on the inward flanges of the fastening nut so that mounting and detaching can be easily performed.
REFERENCES:
patent: 2346706 (1944-04-01), Stoner
patent: 3451686 (1969-06-01), Hammond
patent: 3652100 (1972-03-01), Baturka
patent: 3726532 (1973-04-01), Zeilinger
patent: 3810641 (1974-05-01), Benjamin
patent: 4607989 (1986-08-01), Kitamura
Daishowa Seiki Co., Ltd.
Howell Daniel W.
Weidenfeld Gil
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