Abstract: The piston made in accordance with the teachings herein includes a primary compression ring groove, a bottom and rear wall surface of which are hardened by the method of laser hardening. The method includes the steps of spraying the primary groove with a graphite spray and then directing an angled elliptical in cross section laser beam at the bottom surface of the groove while rotating the cylinder head at predetermined parameters.
Type:
Grant
Filed:
December 5, 1994
Date of Patent:
May 14, 1996
Assignee:
Clark Industries, Inc.
Inventors:
Richard J. Clark, Richard K. Clark, Dennis E. Clark, Richard W. Budd, Norman A. Moon
Abstract: The unitary cylinder liner incorporating a water jacket is vertically cast as a one piece unit. The water jacket is draftless, allowing water to circulate therethrough more efficiently, increasing cooling capabilities. Such vertical one piece casting is made possible by the novel two piece core which eliminates the need for welding of metal bands onto an outer surface of the liner to produce the water jacket thereof. A novel method of vertical casting is also provided by use of the two piece core.
Type:
Grant
Filed:
July 15, 1994
Date of Patent:
November 14, 1995
Assignee:
Clark Industries, Inc.
Inventors:
Richard J. Clark, Richard K. Clark, Dennis E. Clark
Abstract: The unitary cylinder head and liner combination, is vertically cast as a one piece unit. The liner incorporates a water jacket therein. The water jacket is draftless, allowing water to circulate therethrough more efficiently, increasing cooling capabilities. Such vertical one piece casting is made possible by a novel two piece core which eliminates the need for welding of metal bands onto an outer surface of the liner to produce the water jacket thereof. A novel method of vertical casting is also provided which allows the cylinder head to be cast integral with the liner, allows for increased water capacity in the liner and integral head passages, and allows for a plurality of enlarged air intake channels to be provided.
Type:
Grant
Filed:
January 18, 1994
Date of Patent:
November 8, 1994
Assignee:
Clark Industries, Inc.
Inventors:
Richard J. Clark, Richard K. Clark, Dennis E. Clark
Abstract: The unitary cylinder liner incorporating a water jacket is vertically cast as a one piece unit. The water jacket is draftless, allowing water to circulate therethrough more efficiently, increasing cooling capabilities. Such vertical one piece casting is made possible by the novel two piece core which eliminates the need for welding of metal bands onto an outer surface of the liner to produce the water jacker thereof. A novel method of vertical casting is also provided by use of the two piece core.
Type:
Grant
Filed:
March 11, 1993
Date of Patent:
August 16, 1994
Assignee:
Clark Industries, Inc.
Inventors:
Richard J. Clark, Richard K. Clark, Dennis E. Clark
Abstract: The unitary cylinder head and liner combination, is vertically cast as a one piece unit. The liner incorporates a water jacket therein. The water jacket is draftless, allowing water to circulate therethrough more efficiently, increasing cooling capabilities. Such vertical one piece casting is made possible by a novel two piece core which eliminates the need for welding of metal bands onto an outer surface of the liner to produce the water jacket thereof. A novel method of vertical casting is also provided which allows the cylinder head to be cast integral with the liner, allows for increased water capacity in the liner and integral head passages, and allows for a plurality of enlarged air intake channels to be provided.
Type:
Grant
Filed:
July 12, 1993
Date of Patent:
April 12, 1994
Assignee:
Clark Industries, Inc.
Inventors:
Richard J. Clark, Richard K. Clark, Dennis E. Clark