초록 ▼

Expandable vent closure apparatus for a greenhouse comprising a clear inflatable mat, the opposed surfaces of which are sealed to one another to form a plurality of horizontal tubular members and a plurality of internal air passages connecting one to the other. Air means connected to the uppermost t

Expandable vent closure apparatus for a greenhouse comprising a clear inflatable mat, the opposed surfaces of which are sealed to one another to form a plurality of horizontal tubular members and a plurality of internal air passages connecting one to the other. Air means connected to the uppermost tubular section inflates the mat within a wall mounted support assembly from the top down to seal the vent opening or upon deflation to open the vent.

대표청구항 ▼

A vent closure system for providing outside ventilation to the interior of a building comprising in combination: (a) a hollow sealed mat having a plurality of horizontal tubular sections formed adjacent to one another and incrementally sealed together by spot seals disposed between the length of eac

A vent closure system for providing outside ventilation to the interior of a building comprising in combination: (a) a hollow sealed mat having a plurality of horizontal tubular sections formed adjacent to one another and incrementally sealed together by spot seals disposed between the length of each section on alternating sides of the longitudinal axis of each section, and including a plurality of air passages opening internally between each of said spot seals; (b) means for inflating and deflating mat; and (c) means mountable to an outside wall of said building adjacent a vent opening for supporting said mat in covering relation thereto when inflated and in uncovered relation when deflated.