Electric heating – Heating devices – With heater-unit housing – casing – or support means
Patent
1975-06-09
1976-08-10
Mayewsky, Volodymyr Y.
Electric heating
Heating devices
With heater-unit housing, casing, or support means
219203, 219543, 219541, 219544, H05B 306
Patent
active
039743594
ABSTRACT:
A laminated glass-plastic glazing unit suitable for aircraft is disclosed. The unit comprises a pair of sheets of rigid transparent material such as glass and an interlayer of thermoplastic material that is susceptible to crack at low temperatures and that has a higher coefficient of thermal expansion than the sheets of rigid transparent material. Electrical resistance material preferably in the form of thin metal wire, is embedded within the interlayer and disposed locally in areas along a pair of opposite marginal edges of the interlayer and electrically energized to heat the interlayer portion adjacent thereto sufficiently to overcome the tendency of the interlayer to pull chips from the marginal portion of one or both of the rigid sheets when the unit is subjected to extremely low temperature conditions in a high-flying aircraft. The electroconductive material is embedded within the interlayer in spaced relation to a transparent electroconductive coating on one of the glass sheets for heating the glazing unit to dissipate mist or frost and is located relative to the thickness of the interlayer in a plane that is closer to the rigid sheet more likely to become damaged when the unit is exposed to the aforesaid low temperature conditions. The interlayer may also include a metal reinforcement frame in heat exchanging relation to the electroconductive material that extends to the edge of the interlayer to conduct heat received from the electroconductive material to the edge of the interlayer, thereby retarding the cooling of the edge of the interlayer to a temperature at which it cracks.
REFERENCES:
patent: 2490433 (1949-12-01), Gunning et al.
patent: 2507036 (1950-05-01), McCrumm et al.
patent: 2650976 (1953-09-01), Gaiser et al.
patent: 2813960 (1957-11-01), Egle et al.
patent: 2853589 (1958-09-01), Crooke
patent: 2991207 (1961-07-01), Miller
patent: 3356833 (1967-12-01), Orcutt
patent: 3749309 (1973-07-01), Gruss
Collier Kenneth C.
Orcutt Dee R.
Mates Edward I.
Mayewsky Volodymyr Y.
PPG Industries Inc.
LandOfFree
Electrically heated transparent laminated glazing 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 Electrically heated transparent laminated glazing unit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electrically heated transparent laminated glazing unit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1743960