Acoustics – Sound-modifying means – Muffler – fluid conducting type
Reexamination Certificate
2005-09-21
2010-06-22
Donels, Jeffrey (Department: 2832)
Acoustics
Sound-modifying means
Muffler, fluid conducting type
C181S212000
Reexamination Certificate
active
07740105
ABSTRACT:
A sheet metal is rolled double to form a cylinder having an inner plate2and an outer plate3, and form an overlapped portion4, with their circumferential end portions2aand3acrossed in the circumferential direction. Between the inner plate2and the outer plate3, a plurality of line grooves5are formed to extend outward of an outer tube1, with their tip end portions facing with each other to be apart from each other by a predetermined distance from a peripheral edge of one of the inner plate and outer plate, and these line grooves5are arranged in parallel with each other along a longitudinal direction of the outer plate3. And, at least one portion of the overlapped portion positioned between the neighboring line grooves is joined by welding W.
REFERENCES:
patent: 3087580 (1963-04-01), Powers et al.
patent: 4333545 (1982-06-01), Roberts
patent: 4851298 (1989-07-01), Fukuda
patent: 5173577 (1992-12-01), Clegg et al.
patent: 5422445 (1995-06-01), Baird et al.
patent: 6575267 (2003-06-01), Stiles et al.
patent: 6892855 (2005-05-01), Warmenhoven
patent: 7293628 (2007-11-01), Takahashi
patent: 7364013 (2008-04-01), Nitta et al.
patent: 2005/0252713 (2005-11-01), Takahashi
patent: 2006/0042871 (2006-03-01), Yasuda et al.
patent: 2007/0051558 (2007-03-01), Okawara et al.
patent: 2007/0215408 (2007-09-01), Kimata
patent: U-57-142124 (1981-02-01), None
patent: A-59-162318 (1984-09-01), None
patent: U-01-173412 (1989-12-01), None
patent: 03047421 (1991-02-01), None
patent: A-03-267519 (1991-11-01), None
patent: A-06-269884 (1994-09-01), None
patent: A-10-306721 (1998-11-01), None
patent: A-2001-082125 (2001-03-01), None
patent: A-2004-285969 (2004-10-01), None
Donels Jeffrey
Oliff & Berridg,e PLC
Phillips Forrest M
Sango Co. Ltd.
LandOfFree
Outer tube of exhaust system part does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Outer tube of exhaust system part, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Outer tube of exhaust system part will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4224759