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:
Apr. 14, 1998
Filed:
Dec. 13, 1996
Hiroshi Matsuoka, Yamato, JP;
Takahiro Tsubonuma, Yokohama, JP;
Isuzu Motors Limited, Tokyo, JP;
Abstract
In this piston structure with a heat insulated combustion chamber, a combustion chamber structure is fixed to a piston body stably and firmly by a pre-stressed holding member. The combustion chamber structure which constitutes a combustion chamber provided on an outer circumferential part of a lower portion thereof with a flange made integral therewith, and which comprises a heat resisting material, is fixed by a holding member fused to the piston body. After the piston body and holding member have been welded, the holding member is pre-stressed by a press so that the fixed condition of the combustion chamber structure with respect to the piston body during an operation of the engine is stabilized.