Geometrical instruments – Miscellaneous – Light direction
Reexamination Certificate
2009-04-17
2011-11-29
Guadalupe-McCall, Yaritza (Department: 2841)
Geometrical instruments
Miscellaneous
Light direction
C033S501030
Reexamination Certificate
active
08065806
ABSTRACT:
A digital torque wrench includes a position sensor assembly which measures the movement of a load beam with respect to an indicator beam to determine the torque being applied to a working element by the torque wrench. The position sensor assembly includes a first position sensor portion having multiple rotatable pinion gears coupled to a potentiometer, and includes a second position sensor portion having a rack gear that engages one of the pinion gears of the first position sensor portion. The first and second position sensor portions are attached to different ones of the load beam and the indicator beam so that at least one of the pinion gears rotates along the rack gear in response to force (torque) being applied through the load beam to the working element. Rotation of the pinion gears causes rotation of a potentiometer element, which produces a signal indicative of the relative displacement of the load beam with respect to the indicator beam. This displacement is then converted to a torque measurement and is displayed to a user via a display. The use of multiple pinion gears enables a high degree of resolution with respect to the torque measurements, while reducing the width profile of the torque wrench.
REFERENCES:
patent: 1925219 (1933-09-01), Weigt
patent: 2007880 (1935-07-01), Sharp
patent: 2159373 (1939-05-01), Dunn
patent: 2250941 (1941-07-01), Zimmerman
patent: 2269503 (1942-01-01), Zimmerman
patent: 2367224 (1945-01-01), Larson et al.
patent: 3274827 (1966-09-01), Sturtevant
patent: 3304772 (1967-02-01), Campbell
patent: 3525256 (1970-08-01), Stasiek et al.
patent: 3550279 (1970-12-01), Fapiano
patent: 3726134 (1973-04-01), Grabovac
patent: 4073187 (1978-02-01), Avdeef
patent: 4558601 (1985-12-01), Stasiek et al.
patent: 4664001 (1987-05-01), Denman
patent: 4665756 (1987-05-01), Snyder
patent: 4762007 (1988-08-01), Gasperi et al.
patent: 4805464 (1989-02-01), Grabovac
patent: 6070506 (2000-06-01), Becker
patent: 6276243 (2001-08-01), Jenkins
patent: 6463811 (2002-10-01), Putney
patent: 6481272 (2002-11-01), Kieselbach
patent: 6732438 (2004-05-01), Enzinna
patent: 7017274 (2006-03-01), Stobbe
patent: 7082865 (2006-08-01), Reynertson, Jr.
patent: 7089834 (2006-08-01), Reynertson et al.
patent: 7367250 (2008-05-01), Rainone et al.
patent: 7765702 (2010-08-01), Schirp et al.
patent: 2003/0182809 (2003-10-01), Enzinna
patent: 2007/0095155 (2007-05-01), Rainone et al.
patent: 2011/0000744 (2011-01-01), Smith
patent: 2110206 (2009-10-01), None
Extended European Search Report for EP Application No. 09158175.1-1262, dated Jul. 16, 2009.
Baxter Daniel
Hovanky Thao D.
Rainone Michael D.
Brown Line Metal Works, LLC
Guadalupe-McCall Yaritza
Marshall & Gerstein & Borun LLP
LandOfFree
Multi-pinion gear digital beam torque wrench does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Multi-pinion gear digital beam torque wrench, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-pinion gear digital beam torque wrench will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4293297