Metal working – Method of mechanical manufacture – Prime mover or fluid pump making
Reexamination Certificate
2011-07-05
2011-07-05
Bryant, David P (Department: 3726)
Metal working
Method of mechanical manufacture
Prime mover or fluid pump making
C029S888040, C029S888044, C029S888048, C029S418000, C092S222000
Reexamination Certificate
active
07971355
ABSTRACT:
A method for attaching a ring element to a piston for an internal combustion engine, in which the ring element is screwed onto the piston body by a thread applied to the radially outer surface of a part of the piston crown, a circumferential groove that is open towards the top is formed into the piston crown in the region of the thread, the groove is filled with solder material, the piston is heated until the solder material liquefies and flows between the thread channels of the thread and subsequently, the piston is cooled. As a result, a secure screw connection between the basic piston body and the ring element is obtained. Furthermore, the cooling channel is sealed with regard to the combustion gases, which stand under high pressure and act on the piston crown.
REFERENCES:
patent: 2244008 (1941-06-01), Hazen et al.
patent: 3613521 (1971-10-01), Itano
patent: 4011797 (1977-03-01), Cornet
patent: 4651631 (1987-03-01), Avezou
patent: 4838149 (1989-06-01), Donnison et al.
patent: 2006/0278180 (2006-12-01), Scharp
patent: 830 127 (1952-01-01), None
patent: 30 32 671 (1952-08-01), None
patent: 24 34 902 (1975-02-01), None
patent: 1 23 962 (1977-01-01), None
patent: 30 32 671 (1982-03-01), None
patent: 82 25 318 (1983-01-01), None
patent: 195 01 416 (1996-07-01), None
patent: 199 15 782 (2000-11-01), None
patent: 100 63 568 (2002-07-01), None
patent: 101 28 737 (2003-01-01), None
patent: 102 09 331 (2003-09-01), None
patent: 103 25 914 (2004-12-01), None
patent: 103 40 292 (2005-04-01), None
patent: 699 26 583 (2006-01-01), None
patent: 10 2005 044 597 (2007-03-01), None
patent: 10 2007 005 268 (2007-08-01), None
patent: 600 35 835 (2007-12-01), None
patent: 0 330 005 (1989-08-01), None
patent: 916926 (1963-01-01), None
patent: WO 2004/111420 (2004-12-01), None
patent: WO 2005/024216 (2005-03-01), None
patent: WO 2009/033446 (2009-03-01), None
International Search Report of PCT/DE2008/002074 in German.
“Furnace Brazing of Steels; Assembly for Brazing,” in Metals Handbook, Ninth Edition, American Society for Metals, Jan. 1983, Welding, Brazing and Soldering, [Metals Handbook], vol. 6, pp. 939-943. XP-002532666. (ISR).
Bryant David P
Collard & Roe P.C.
Mahle International GmbH
Walters Ryan J
LandOfFree
Method for attaching a ring element to a piston for an... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for attaching a ring element to a piston for an..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for attaching a ring element to a piston for an... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2653127