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:
Feb. 23, 1988
Filed:
Apr. 28, 1986
Applicant:
Inventor:
Stephen C Inglis, New Hartford, NY (US);
Assignee:
Carrier Corporation, Syracuse, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
251127 ; 251298 ; 181258 ; 98 382 ;
Abstract
Low frequency noise and turbulence are reduced in a damper structure by providing a perforate screen extension onto the damper blade so as to extend across the flow path when the damper is open. Additionally, a perforate screen is located immediately downstream of the damper and spaced from the wall so as to define a chamber therewith as well as defining a boundary of the flow path.