초록 ▼

An improved roll-form vent for buildings comprises a sequentially thermoformed polymeric vent which provides multiple venting air flow paths between the interior of a building and ambient atmosphere. The vent includes projections extending from a web and a plurality of vent openings that cooperate w

An improved roll-form vent for buildings comprises a sequentially thermoformed polymeric vent which provides multiple venting air flow paths between the interior of a building and ambient atmosphere. The vent includes projections extending from a web and a plurality of vent openings that cooperate with screening to bar entry into the building of water, insects and foreign matter. A method of making the vent includes steps of providing a web of material of indeterminate running length, heating the web, sequentially thermoforming the web, cooling the web and rolling the formed vent for storage, shipment and use.

대표청구항 ▼

[ We claim:] [1.] A method of manufacturing a roof vent suited for venting the ridge line of a roof, comprising the steps of:providing an elongate single sheet web of indeterminate length of thermoformable material,advancing a predetermined length of said single sheet web into a thermoforming die,dr

[ We claim:] [1.] A method of manufacturing a roof vent suited for venting the ridge line of a roof, comprising the steps of:providing an elongate single sheet web of indeterminate length of thermoformable material,advancing a predetermined length of said single sheet web into a thermoforming die,drawing said single sheet web length into said thermoforming die to form projections transverse to the plane of the web,ejecting said formed single sheet web length from said die, androlling said formed single sheet web into a roll, such that the roof vent is formed by said formed single sheet web and such that adjacent convolutions of said formed single sheet web in said roll contact one another.