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US 4,804,392 AGranted
Clean air facility
OwnerCharles W. Spenglerinventor
Life of this patent
Estimating the term…
Abstract
An environmental clean air facility formed of a clear vinyl material secured to a frame formed by PVC pipes and fittings so that the clear vinyl material may be formed and draped over or attached to the frame to form a clean air enclosure. A power unit section including a blower motor having a prefilter unit on opposite ends through which air is drawn from the surrounding medium and directs the air through a HEPA filter, through an air delivery duct and into or out of the enclosure. The frame may be used for delivering air to the room or exhausting air from the room.
Claims18
A portable clean air facility which includes:
- a support frame;
- said support frame including front and rear end vertically directed spaced uprights and horizontally directed spaced upper cross pieces that separate said front end from said rear end;
- an enclosure including an upper panel, a front end panel, a rear end panel and opposite side panels each formed by clear vinyl sheeting adapted to be secured to each other in an air tight manner by use of compatible fastening means and secured to said support frame;
- at least one door formed of a vinyl sheet secured to an opening in one of said panels by use of Velcro applied to edges of said opening and said vinyl sheet;
- said enclosure includes a tee-shaped footer for securing said enclosure to a supporting floor and for admitting or exhausting air from said enclosure;
- and
- means for directing clean air into or out of said enclosure.
4 more elements
Dependencies are inferred from the claim text.