Safety mechanism for a rotary hammer

Details Safety mechanism for a rotary hammer Safety mechanism for a rotary hammer

2008-04-28

2009-02-10

Gerrity, Stephen F (Department: 3721)

Tool driving or impacting

Automatic control of power operated means

C073S494000, C073S514040, C173S176000, C173S183000, C408S006000

Reexamination Certificate

active

07487845

ABSTRACT:
An improved method is provided for controlling a power tool having a rotary shaft. The method includes: disposing an inertial mass in a housing of the power tool, such that the inertial mass is freely rotatable about an axis of rotation which is axially aligned with the rotary shaft; monitoring rotational motion of the power tool in relation to the inertial mass during operation of the power tool; and activating a protective operation based on the rotational motion of the power tool in relation to the inertial mass.

REFERENCES:
patent: 4066133 (1978-01-01), Voss
patent: 4152833 (1979-05-01), Phillips
patent: 4249117 (1981-02-01), Leukhardt et al.
patent: 4267914 (1981-05-01), Saar
patent: 4316512 (1982-02-01), Kibblewhite
patent: 4448261 (1984-05-01), Kousek et al.
patent: 4502549 (1985-03-01), Hornung et al.
patent: 4573556 (1986-03-01), Anderasson
patent: 4638870 (1987-01-01), Kousek et al.
patent: 4871033 (1989-10-01), Odoni et al.
patent: 5201373 (1993-04-01), Bloechle
patent: 5358062 (1994-10-01), Uhl et al.
patent: 5385052 (1995-01-01), Hofmann
patent: 5401124 (1995-03-01), Hettich
patent: 5584619 (1996-12-01), Guzzella et al.
patent: 5704435 (1998-01-01), Meyer et al.
patent: 5879111 (1999-03-01), Stock et al.
patent: 5914882 (1999-06-01), Yeghiazarians
patent: 5954457 (1999-09-01), Stock et al.
patent: 5984020 (1999-11-01), Meyer et al.
patent: 5996707 (1999-12-01), Thome et al.
patent: 6055484 (2000-04-01), Lysaght
patent: 6111515 (2000-08-01), Schaer et al.
patent: 6311786 (2001-11-01), Giardino et al.
patent: 6968908 (2005-11-01), Tokunaga et al.
patent: 2001/0042630 (2001-11-01), Kristen et al.
patent: 2006/0124331 (2006-06-01), Stirm et al.
patent: 0759343 (1997-05-01), None
patent: 55-5201 (1980-01-01), None

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