Object position/presence sensor and method for detecting object

Details Object position/presence sensor and method for detecting object Object position/presence sensor and method for detecting object

1998-09-28

2000-07-11

Bollinger, David H.

Sheet feeding or delivering

Feeding

With means to interrupt feeding

271260, 27126501, B65H 702

Patent

active

060860642

ABSTRACT:
An object sensor includes at least one sensor device which is integrated with a fluid source. The object sensor includes a sensor housing having an object passage through which an object is moved. The object sensor further includes a fluid passage through which a flow of fluid passes. The object passage communicates with the fluid passage. A fluid source is positioned to generate a flow of fluid through the fluid passage. When an object, such as a paper sheet, moves through the object passage the object will obstruct or eclipse the flow of fluid produced by the fluid source and flowing through the fluid passage to diminish the flow of fluid. As a result, the impeded flow of fluid is sensed and one or more of a position, a presence and/or an absence of the object in the object passage is detected.

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C.F. Malacaria, A Thin, Flexible, Matrix-Based Pressure Sensor, Sensors, pp. 102-104, Sep. 1998.
C. Haverty et al., Enhancing Computer Game Joysticks with Smart Force Transducers, Sensors, pp.92-95, Sep. 1998.

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