Tool driving or impacting – Automatic control of power operated means – Drive means responsive to torque or speed condition
Patent
1998-07-09
1999-11-16
Smith, Scott A.
Tool driving or impacting
Automatic control of power operated means
Drive means responsive to torque or speed condition
173178, 173216, 81 571, 81 591, 81474, B25B 1700
Patent
active
059840226
ABSTRACT:
An automatic shaft lock is incorporated into the transmission or drive components of a power driving tool of the type commonly used to tighten or loosen threaded fasteners, for example. The automatic shaft lock operates to prevent an externally-applied rotational back-force or back-torque, such as results from use of the tool to manually tighten or loosen a fastener, from being transmitted all the way through the drive components to the tool's motor or armature shaft. The shaft lock also effectively reduces the amount of back-torque, functioning automatically in either rotational direction, due to being disposed at an intermediate location in the drive train, between an intermediate gear enmeshed for driving rotation with the tool's armature shaft and an output gear enmeshed in a driving relationship with the tool's output shaft.
REFERENCES:
patent: Re35617 (1997-09-01), Krivec
patent: 1016838 (1912-02-01), Luce
patent: 2249464 (1941-07-01), Etten
patent: 2408365 (1946-10-01), Biehl et al.
patent: 3110381 (1963-11-01), Leu
patent: 3240300 (1966-03-01), McKay
patent: 3243023 (1966-03-01), Boyden
patent: 3477521 (1969-11-01), Kiester et al.
patent: 3802518 (1974-04-01), Albert
patent: 4253554 (1981-03-01), Nisenson
patent: 4265347 (1981-05-01), Dischler
patent: 4441378 (1984-04-01), Ponczek
patent: 4448098 (1984-05-01), Totsu
patent: 4522270 (1985-06-01), Kishi
patent: 4653358 (1987-03-01), Lankry
patent: 4691786 (1987-09-01), Fujita et al.
patent: 4706791 (1987-11-01), Magliano
patent: 4883130 (1989-11-01), Dixon
patent: 5016501 (1991-05-01), Holzer, Jr.
patent: 5054588 (1991-10-01), Thorp et al.
patent: 5105924 (1992-04-01), Carlson
patent: 5134909 (1992-08-01), Sasaki
patent: 5248017 (1993-09-01), Schwarzbich
patent: 5385512 (1995-01-01), Moolenaar et al.
patent: 5406866 (1995-04-01), Badiali
patent: 5499559 (1996-03-01), Lin
patent: 5540629 (1996-07-01), Gotman
patent: 5586631 (1996-12-01), Benthin
patent: 5593210 (1997-01-01), Schwarzbich
patent: 5624013 (1997-04-01), Tsai
patent: 5632186 (1997-05-01), Lin
patent: 5651294 (1997-07-01), Shiao
patent: 5653294 (1997-08-01), Thurler
patent: 5692575 (1997-12-01), Hellstrom
patent: 5730232 (1998-03-01), Mixer
Cannaliato Michael F.
Harman, Jr. William G.
Wheeler Dale K.
Black & Decker Inc.
Smith Scott A.
LandOfFree
Automatic shaft lock does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Automatic shaft lock, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic shaft lock will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1312133