Geometrical instruments – Distance measuring – Opposed contacts
Patent
1995-06-07
1997-02-04
Bennett, G. Bradley
Geometrical instruments
Distance measuring
Opposed contacts
33657, G01B 714
Patent
active
055986390
ABSTRACT:
Disclosed is a roll nip tool for making nip width measurements within a high temperature roll nip. The tool includes a first thin section for inserting into the high temperature roll nip. The first thin section includes a first surface that has a first portion of an electrical circuit formed thereon. The first thin section also includes a second thin member that has a second surface and a second portion of the electrical circuit formed thereon. The first thin member and the second thin member are attached together to form a pocket, and are arranged together such that the first and the second portions of the electrical circuit can be brought together into circuit closing contact within the pocket. The first thin section of the tool further includes a mechanism or suitable means such as pressurized air within the pocket for normally keeping the electrical circuit open by controllably separating the first and the second portions of the electrical circuit. The tool then includes a second section connected to the first thin section for indicating the achievement of closing contact between the first and the second portions of the electrical circuit.
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Lindenfelser, William M., "Fuser Nip Length Sensor"Xerox Disclosure Journal, vol. 15, No. 4 Jul. 1 Aug. 1990, pp. 231-232.
Fromm, Paul Michael, "Dynamic Nip Width Determination With FRS Sensor", Xerox Disclosure Journal, vol. 15, Nov./Dec., 1990, pp. 441-442.
Lindensfelser, William M., "A Fuser Nip Sensor for Determining Nip Pressure and Length", Xerox Disclosure Journal, vol. 18, No. 4 Jul/Aug. 1993, pp. 359-361.
Bennett G. Bradley
Xerox Corporation
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