US2003097805A1PendingUtilityA1

Retractable in house open stairwell cover

Priority: Nov 26, 2001Filed: Nov 26, 2001Published: May 29, 2003
Est. expiryNov 26, 2021(expired)· nominal 20-yr term from priority
E04F 11/02E04F 19/08
44
PatentIndex Score
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Claims

Abstract

Purpose of cover is to seal basement stairwell opening when basement is not in use. Benefit of cover over basement stairwell is to seal out of living space any and all dampness or cold air drafts, especially in winter climates that come up from basement. Also to save on energy usage, during cold winter months of the year, due to cold air drafts coming up from basement.

Claims

exact text as granted — not AI-modified
1 . A Retractable in House Open Stairwell Cover is to be used for residential or commercial buildings that have been or will be constructed with an open stairwell, within the interior of construction. 
 Cover can be made in different sizes to accommodate various stairwell openings.    Electric motor operation is for ease of opening and closing cover to access basement stairs when necessary. 
 Cover assembly can be made three ways: 
 1.) Pre-construction, where as electric motor cover assembly can be installed into the wall.  
 2.) Existing construction, where as electric motor cover assembly made self-contained and mounted to outside of wall.  
 3.) Manual, where as cover to be made as just a retractable cover. Cover assembly made same as drawings and description of invention with the exception of the electric motor.

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