Land vehicles: bodies and tops – Bodies – Seats with body modifications
Patent
1983-10-26
1985-10-15
Joyce, Harold
Land vehicles: bodies and tops
Bodies
Seats with body modifications
49 38, 98 214, 98 413, 98 881, 296152, 296216, F24F 700
Patent
active
045466939
ABSTRACT:
A vent window assembly or filter comprises a continuous channel frame mountable within an opening in a building for a door or window, or within an opening in a vehicle body at the side, roof or rear window area. A laminate consisting of a pair of transparent sheets of plastic material and an intermediate thin plastic screen is nested and retained within the frame. Each of the sheets have a plurality of vertically spaced rows of longitudinally spaced apertures therethrough of a dimension considerably larger than the screen apertures. The apertures in the sheets are in alignment to permit flow of air therethrough, the screen restricting the flow of dirt particles and insects. A vent closure sheet of transparent material is slidably mounted within the frame snugly engaging one of the sheets having therein a corresponding series of similar apertures aligned with the sheet apertures and adjustable for progressively displacing its apertures relative to the laminate apertures for closing off the flow of air.
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