Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
Reexamination Certificate
2006-10-31
2006-10-31
Porta, David (Department: 2884)
Radiant energy
Invisible radiant energy responsive electric signalling
Infrared responsive
C250S338100, C250S336100, C250S340000
Reexamination Certificate
active
07129490
ABSTRACT:
A detection apparatus is discloses comprising an emitter for emitting a plurality of optical pulses; a detector for receiving the optical pulses from the emitter; and a controller connected to the emitter and the detector, the controller comparing a difference between at least one pulse received at the detector and at least one other pulse received at the detector with a threshold to detect the presence of an object between the emitter and detector. Also discloses is an object processing system, which automatically detects the presence of objects at at least one predetermined location during object processing, comprising an object processing subsystem; and an object detection subsystem communicatively connected to the object processing subsystem. The object detector is particularly useful in medical/pharmaceutical dispensing systems, automated manufacturing and production systems, food processing systems, commercial and industrial food service systems, packaging systems, and a variety of other commercial, industrial, municipal and residential systems, for sensing the presence, absence or flow of various objects or material.
REFERENCES:
patent: 5495103 (1996-02-01), Utiger et al.
patent: RE35762 (1998-04-01), Zimmerman
patent: 6384402 (2002-05-01), Hair, III et al.
patent: 2001/0039804 (2001-11-01), Newman et al.
Ham Eardly L.
Olson Gary
Pichotta Andrew J.
Control Products
Porta David
Skinner and Associates
Sung Christine
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