Conveyors: power-driven – With means to facilitate working – treating – or inspecting... – Condition responsive control of conveyor or station apparatus
Reexamination Certificate
2005-12-27
2005-12-27
Bidwell, James R. (Department: 3651)
Conveyors: power-driven
With means to facilitate working, treating, or inspecting...
Condition responsive control of conveyor or station apparatus
C198S460100, C198S476100, C198S478100
Reexamination Certificate
active
06978877
ABSTRACT:
An automatic machine for processing articles, and having a conveyor which feeds the articles along a path in a given feed direction and has a movable member; and a reading device for determining the position of the movable member; the reading device cooperates with a permanent magnet housed inside the movable member and positioned with its polar axis perpendicular to the feed direction, and has two linear Hall-effect sensors arranged side by side parallel to the feed direction so as to have zero sensitivity in a direction parallel to the feed direction; and the instant in which the movable member is in a definite detection position with respect to the reading device is detected by determining the instant in which the output signal of the Hall-effect sensor downstream with respect to the travelling direction of the movable member inverts.
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English Abstract of WO 02/095334 dated Nov. 28, 2002.
Spatafora Mario
Tommasini Bruno
Bidwell James R.
G.D Societa ' per Azioni
Ladas and Parry LLP
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