Internal-combustion engines – Valve – Reciprocating valve
Reexamination Certificate
2008-07-22
2008-07-22
Cronin, Stephen K. (Department: 3747)
Internal-combustion engines
Valve
Reciprocating valve
C123S188800, C029S888400
Reexamination Certificate
active
10566624
ABSTRACT:
A cylinder head for internal combustion engines, comprising a metallic valve seat ring that is formed by a thermally sprayed homogeneous layer made of a basic Co or Co/Mo alloy. The sum of the Co content and Mo content in the alloy exceeds 50 percent by weight while the Fe content lies below 5 percent by weight. Also disclosed is a method for thermally spraying said valve seat ring by means of an arc wire spraying process with the aid of at least two filler wires and/or composite wires, the essential Co portion in the deposited layer being delivered by the jacket of the filler wire and/or the matrix of the composite wire.
REFERENCES:
patent: 4724819 (1988-02-01), Fleri
patent: 5915743 (1999-06-01), Palma
patent: 6240639 (2001-06-01), Hycner
patent: 6763576 (2004-07-01), Watchko et al.
patent: 198 41 618 (2000-12-01), None
patent: 0 227 634 (1987-07-01), None
patent: 0 338 204 (1989-10-01), None
patent: 0 927 816 (1999-07-01), None
patent: 1 172 452 (2002-01-01), None
patent: 01138095 (1989-05-01), None
Popoola et al.: “Novel Powertrain Applications of Thermal Spray Coatings,” Surface Engineering, 1998, pp. 107-112, vol. 14, No. 2, The Institute Of Materials, London.
Esswein Ernst
Grau Stefan
Haug Tilmann
Sagel Alexander
Ali Hyder
Cronin Stephen K.
Daimler AG
Patent Central LLC
Pendorf Stephan
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