Material or article handling – With weighing
Patent
1987-03-30
1988-05-17
Paperner, Leslie J.
Material or article handling
With weighing
177211, 177229, 414331, 901 46, B65G 6500
Patent
active
047447095
ABSTRACT:
A tactile pick includes a base and a lever attached beneath the base by a pivot. A load sensing device including a strain gauge is located between the base and the portion of the lever on one side of the pivot; the portion of the lever on the other side of the pivot is adapted to receive a semiconductor wafer. Rotation of the lever about the pivot induced by the weight of a wafer causes an actuator to depress a flexible member on which a strain gauge is mounted. The output signal of the strain gauge is processed by a controller to provide an output signal which varies monotonically with the magnitude of the weight placed on the wafer receiving portion of the lever. The pick is employed in connection with the wafer transport system which transfers wafers from a cassette to the pick lever.
REFERENCES:
patent: 565271 (1896-08-01), Henrich
patent: 1380199 (1921-05-01), Felix
patent: 2842633 (1958-07-01), Roach
patent: 3059710 (1962-10-01), Pien
patent: 3218695 (1963-01-01), Fisher
patent: 4132318 (1979-01-01), Wang et al.
patent: 4519130 (1985-05-01), Schaefer
patent: 4558757 (1985-12-01), Mori et al.
patent: 4616511 (1986-10-01), Gindy et al.
patent: 4621331 (1986-11-01), Iwata
patent: 4636140 (1987-01-01), Aldridge
Hertel Richard J.
Klos Leo V.
Cole Stanley Z.
Dooher Terrence E.
Fisher Gerald M.
Millman Stuart J.
Paperner Leslie J.
LandOfFree
Low deflection force sensitive pick does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Low deflection force sensitive pick, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low deflection force sensitive pick will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1878480