H - Electricity – 05 – B
Patent
H - Electricity
05
B
309/5, 88/7
H05B 3/86 (2006.01) G02C 7/16 (2006.01) H05B 1/02 (2006.01)
Patent
CA 2020677
ABSTRACT An anti-fog light transmissive screen such as an eye protector, a vehicle cabin window or the like, comprising a panel of clear thermoplastic material carrying on one surface a network of electrical resistive conductors supplying heat to the panel when coupled to a suitable power source. The conductors are thermally embedded in the panel, lying in self-impressed channels which engage the respective conductors in a locking relationship to prevent conductor separation from the panel. The invention also extends to a method and an apparatus for manufacturing the anti-fog screen, comprising the steps of heating locally a surface of the panel to fuse thermoplastic material thereon, impressing the electrical conductors into the surface to create a series of open top channels with the respective conductors therein and pressing a resilient body against the surface for at least partially closing the channels around the conductors. Yet, the invention extends to a controller for regulating the amount of thermal energy supplied by an electric anti- fog circuit to a light transmissive screen, including a gate controlled semi-conductor switch responsive to a temperature dependent resistor. A resistive heating element, in series with the anti-fog circuit, is thermally coupled to a temperature responsive resistor to heat same at a temperature representative of the electrical current flowing through the anti-fog network.
Astroflex Inc.
Dery Normand
Fetherstonhaugh & Co.
LandOfFree
Method and an apparatus for manufacturing an anti-fog light... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and an apparatus for manufacturing an anti-fog light..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and an apparatus for manufacturing an anti-fog light... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1986894