Portable grinder with quick-acting chucking device

Details Portable grinder with quick-acting chucking device Portable grinder with quick-acting chucking device

1992-01-09

1992-10-27

Parker, Roscoe V.

Abrasive tool making process, material, or composition

With carbohydrate or reaction product thereof

51377, 403349, 83666, 83698, 279904, B24B 2302, B24B 4500

Patent

active

051578735

ABSTRACT:
A portable grinder (10) has a motor-driven drive shaft (15) and a quick-acting chucking device for a grinding tool (43), which comprises a spindle (20), coaxial with the drive shaft (15), which is braced against the drive shaft (15) by a spring (24) in the axial direction and can be displaced in the axial direction relative to the drive shaft (15) by means of a clamping lever (32). One external free end of the spindle (20) retains the grinding tool (43), which in a released position--with the free end of the spindle (20) extended and the spring (24) tensioned--can be removed from the free end, and in a tightened position--with the free end of the spindle (20) retracted and the spring (24) partly relaxed--is non-rotatably joined to the drive shaft. The free end is configured as a bayonet end (40) which extends though the grinding tool (43). An attachment collet (41) with a bayonet opening can be placed from outside onto the bayonet end (40).

REFERENCES:
patent: 2611621 (1952-09-01), Patterson et al.
patent: 2789402 (1957-04-01), Tocci-Guilbert
patent: 3691900 (1972-09-01), Novak et al.
patent: 3912411 (1975-10-01), Moffat
patent: 4497141 (1985-02-01), Jarby
patent: 4989374 (1991-02-01), Rudolf et al.
patent: 5058909 (1991-10-01), Rudolf et al.

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