Cylinder head and crankcase manufacturing and assembly...

Metal working – Method of mechanical manufacture – Prime mover or fluid pump making

Reexamination Certificate

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C029S527600, C164S113000, C123S0650PD, C123S0650PE, C123S0650EM

Reexamination Certificate

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06842978

ABSTRACT:
A method of manufacturing a cylinder head and crankcase for a small engine. A crankcase and a cylinder head are cast to close tolerances and include as-cast mounting flanges, which are assembled in face-to-face contact by employing self-threading screws. Bearing recesses are cast into the crankcase. The cylindrical sidewalls of the bearing recesses are provided with as-cast flutes and roller bearings are press-fitted into the bearing recesses.

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patent: 4653161 (1987-03-01), Sanchez
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patent: 5025760 (1991-06-01), Webb et al.
patent: 6041499 (2000-03-01), Matsuura et al.
patent: 3800606 (1989-07-01), None
patent: 11-093770 (1999-04-01), None
“Prototyping for Die Cast Components” Diecasting Development Council. 1997 [online] http://www.magalumcorp.com/TECHINFO/bul3.htm.*
Chase, Herbert Die Castings Their Design, Composition, Application Specification, Testing and Finishing. John Wiley & Sons, 1934. pp. 12, 13, 136, 138, 180-181,2 25-227.*
Street, Arthure “Die-Castings A manual for the user, buyer and designer.” Emmott & Co., Limited. 1939. pp. 21-22, 62, 117.*
“Die Casting for Engineers” The New Jersey Zinc Co. 1953. pp. 60, 75, 80, 112, 116.*
Doehler, H. H. “Die Casting” McGraw-Hill. 1951, pp. 180-183, 191-194, 196, 220, 221, 226, 350-353.*
Herb, Charles “Die Casting” The Industrial Press, 1936. pp. 94-95.*
Chase, Herbert Die Castings Their Design, Composition, Application Specification, Testing and Finishing. John Wiley & Sons, 1934. pp. 132-133, 140-143.

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