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:
Jul. 21, 1998
Filed:
Jun. 06, 1997
Applicant:
Inventors:
Bradley Kent Gustafson, Burlington, VT (US);
Robert Arthur Horr, Fairfax, VT (US);
David James Miller, Essex Junction, VT (US);
Frederick Charles Ringer, Jr, Essex Junction, VT (US);
Conrad Wexelblatt, South Burlington, VT (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F05F / ;
U.S. Cl.
CPC ...
454369 ; 160-1 ; 160-6 ; 454170 ;
Abstract
A damper door system that includes an opening in a planar wall, a retractable damper door and a track extending through said opening. The damper door includes slots that are conformable to the track when the door is in a closed position. In addition, the slots in the damper door include an intumescent material for sealing the door shut in the event of a fire.