Electric chuck

Details Electric chuck Electric chuck

1999-07-27

2000-11-07

Ramirez, Nestor

Electrical generator or motor structure

Dynamoelectric

Rotary

279 404, 165DIG139, H02K 900

Patent

active

061441236

ABSTRACT:
An electric chuck constituted by an electric motor coupled to a chuck in which the rotating tool is engaged; the electric motor being provided with a cooling device for the rotor located within the interior of the casing of the electric motor; the cooling device being constituted by an annular heat sink fitted to the shaft of the rotor in contact with the armature of the rotor, and a calibrated nozzle for directing a jet of air over the annular heat sink; the chuck being provided with a release device for the rotating tool operated pneumatically and controlled by a source of air under pressure, and the said calibrated nozzle being connected to this source of air under pressure.

REFERENCES:
patent: 3818778 (1974-06-01), Seely et al.
patent: 3824684 (1974-07-01), Wheeler
patent: 3844341 (1974-10-01), Bimshas, Jr. et al.
patent: 4715732 (1987-12-01), Sanders
patent: 4855558 (1989-08-01), Ramsbro
patent: 5594623 (1997-01-01), Schwegler
patent: 5909882 (1999-06-01), Schill
Patent abstract of Japan, pub. No. 07185994, Nov. 30, 1995.
Patent abstract of Japan, pub. No. 08300239, Nov. 19, 1996.
Patent abstract of Japan, pub. No. 09261924, Oct. 3, 1993.
Patent abstract of Japan, pub. No. 55-077351, Jun. 11, 1980.

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