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:
Sep. 27, 1983
Filed:
Mar. 20, 1981
Applicant:
Inventors:
Martin J Beck, Boxford, MA (US);
George F Boesel, Canton, MA (US);
Assignee:
Armstrong World Industries, Inc., Lancaster, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09F / ;
U.S. Cl.
CPC ...
52741 ; 52 39 ; 52698 ; 411340 ; 411346 ;
Abstract
A suspended ceiling is installed in position by the use of a special nail construction. The nail has a pivotally mounted end which will maintain its straight configuration when it is being driven into a solid ceiling material. Should the nail be driven into a hollow ceiling material, the end of the nail will be permitted to pivot within the hollow area and the end of the nail then functions as a retainer to hold the nail in position in the ceiling material so that the suspended ceiling may be suspended from the retained nail.