Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1982-01-21
1983-08-09
Lusignan, Michael R.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
156 60, 1562731, 156281, 1563082, 427 35, 427 58, 427185, 427195, 427250, 4273742, 4273743, 4273744, 427375, 427379, 4273881, 307400, 29592E, 29399, B05D 512
Patent
active
043977022
ABSTRACT:
A sensing probe unit includes an electrically nonconductive polymeric layer charged with a permanent electric charge to form an electret and intimately bonded to a compensating metal electrode. In the fabrication, the polymeric layer is cleaned and the metal electrode affixed to one surface by vapor deposition, lamination or baking. The polymeric layer may also be applied by coating the electrode with dielectric particles and then heating the subassembly to fuse the particles into an integral layer and to bond the fused layer to the electrode. The subassembly is thermally destressed and the polymeric layer is thereafter charged by triboelectric charging, corona discharge or electron beam charging, or by liquid contact charging processes. In the latter, a Freon-type or other similar liquid having good wetting properties and high evaporation rate is used as a contact charging liquid which creates a particularly stable electret. The sensing probe is stored to prevent loss of charge and sensitivity. The sensing probe unit in a pollutant and combustion detection apparatus is mounted within a suitable apertured ground shield unit with an exposed dielectric sensing surface to form an electrostatic sensor or a capacitor sensor. The compensating electrode is connected to a high impedance detection amplifier.
REFERENCES:
patent: 2844489 (1958-07-01), Gemmer
patent: 3189802 (1965-06-01), Zisman
patent: 3208868 (1965-09-01), Strobel et al.
patent: 3851183 (1974-11-01), Lewiner et al.
patent: 3924324 (1975-12-01), Kodera
patent: 4037310 (1977-07-01), van Turnhout
patent: 4127681 (1978-11-01), Ferren et al.
Buchanan Stuart R.
Klein Carl F.
Klimek David L.
Thoma Paul E.
Bueker Richard
Johnson Controls Inc.
Lusignan Michael R.
LandOfFree
Fabrication of non-conductive charged sensing probe unit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fabrication of non-conductive charged sensing probe unit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fabrication of non-conductive charged sensing probe unit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-585994