Acoustics – Sound-modifying means – Muffler – fluid conducting type
Reexamination Certificate
2006-06-06
2006-06-06
San Martin, Edgardo (Department: 2837)
Acoustics
Sound-modifying means
Muffler, fluid conducting type
C181S216000, C181S253000, C181S271000, C181S277000, C181S219000, C060S312000, C060S226300, C381S071500
Reexamination Certificate
active
07055648
ABSTRACT:
An assembly useful in reducing aircraft engine noise such as turbofan engine noise (730) comprises: (i) at least one tube “H-Q” having an inlet end (738), an outlet end (740) and a central tube portion therebetween; and (ii) at least one actuator operatively interconnected to at least one tube, wherein the actuator is capable of causing dynamic response by the tube. The assembly of this invention may be used in a method for reducing noise, the method comprising: (a) providing means for generating non-uniform noise energy about an inner surface and within a disclosure having at least an inlet; (b) providing an assembly for reducing noise comprising; (i) at least one having an inlet end, an outlet end and a central tube portion therebetween, and (ii) at least one actuator operatively interconnected to at least one tube, wherein the actuator is capable of causing dynamic response by the tube; and (c) directing at least a portion of the non-uniform noise into the assembly.
REFERENCES:
patent: 3637140 (1972-01-01), Palovchik
patent: 3951566 (1976-04-01), Mattei et al.
patent: 4531362 (1985-07-01), Barry et al.
patent: 5271224 (1993-12-01), Cruickshank
patent: 5732547 (1998-03-01), Olsen et al.
patent: 5952621 (1999-09-01), Curtis et al.
patent: 6003301 (1999-12-01), Bratkovich et al.
patent: 6112514 (2000-09-01), Burdisso et al.
patent: 6234758 (2001-05-01), Pawelski
patent: 6595320 (2003-07-01), Hwang et al.
patent: 6633646 (2003-10-01), Hwang
patent: 728617 (1942-11-01), None
patent: 4341951 (1992-12-01), None
patent: 1 067 511 (2001-01-01), None
patent: 1067511 (2001-01-01), None
patent: 1 298 069 (1972-11-01), None
patent: 06348280 (1994-12-01), None
patent: 2003106134 (2003-04-01), None
EP Exam. Report for EP 01 997 991.3, Dec. 8, 2004.
Byrne Stuart
Moe Jeffrey W.
Goodwin & Procter LLP
Martin Edgardo San
Rohr Inc.
LandOfFree
Assembly and method for fan noise reduction from turbofan... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Assembly and method for fan noise reduction from turbofan..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Assembly and method for fan noise reduction from turbofan... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3635400