The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 22, 1999
Filed:
Jun. 05, 1995
Applicant:
Inventor:
David Francis Fletcher-Jones, Burley, GB;
Assignee:
Wellworthy Limited, , GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02F / ; F02F / ;
U.S. Cl.
CPC ...
92219 ; 92258 ; 29888042 ; 29888044 ; 1231934 ;
Abstract
A method is described of making a piston crown, the method comprises the steps of making a lower crown portion, the lower crown portion also having piston pin bosses, making an upper crown portion which co-operates with the lower crown portion and joining the lower and upper crown portions together to form an oil retaining chamber. The upper and lower crown portions may be made by a precision casting technique in a ferrous alloy and may be joined by a brazing operation. The piston crown may be part of an articulated piston or may further include integral skirt portions.