The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 29, 1988
Filed:
Mar. 25, 1986
Applicant:
Inventor:
James C Muth, Milwaukee, WI (US);
Assignee:
Milcor Incorporated, Lima, OH (US);
Primary Examiner:
Int. Cl.
CPC ...
E06B / ; E05F / ;
U.S. Cl.
CPC ...
52204 ; 49-5 ; 49213 ;
Abstract
This disclosure relates to an access door assembly for a ceiling. The assembly includes a frame adapted to be attached to supports of the ceiling and mounted in a generally horizontal position, and a door which fits within the frame. Tracks on the frame receive rollers on the door for mounting the door for movement between open and closed position. The tracks are sloped to gravity actuate the door to the closed position.