Hand-held device

Details Hand-held device Hand-held device

1997-11-12

1999-03-09

Howell, Daniel W.

Cutting by use of rotating axially moving tool

With randomly-actuated stopping means

Responsive to condition of tool or tool-drive

408 9, 408124, B23B 4500

Patent

active

058791116

ABSTRACT:
A motor-operated hand-held device (1), such as a drilling device, has a rotary spindle (6) located within and projecting out of a housing (2). Rotational movement of a driving motor (8) is transmitted to a tool (7) secured to the end of the rotary spindle (6). A safety device (11) within the housing (2) prevents a deflection of the housing about an axis (A) of the rotary spindle (6) in the event the tool (7) becomes suddenly jammed. The safety device (11) can be activated by a detection device (12) if the tool (7) becomes jammed. An overload slip clutch (10) is provided in the drive (9) between the driving motor (8) and the rotary spindle (6). The safety device (11) is arranged in series with the overload slip clutch (10) and is located in the drive (9) adjacent the overload slip clutch (10). When activated, the safety device (11) couples the housing (2) with the drive (9) for the rotary spindle so that the housing (2) and the drive (9) are fixed with respect to rotation relative to one another.

REFERENCES:
patent: 2941414 (1960-03-01), Lee
patent: 3135137 (1964-06-01), Cunningham
patent: 3649129 (1972-03-01), King
patent: 4085337 (1978-04-01), Moeller
patent: 4090802 (1978-05-01), Bilz
patent: 5155473 (1992-10-01), Oketani et al.
patent: 5584619 (1996-12-01), Guzzella

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