Claims
- 1. A metal gasket disposed between a cylinder head and a cylinder block of an internal combustion engine comprising a metallic base plate defining a plurality of openings including at least one combustion opening, and having a bead formed around said combustion opening,
- said base plate being disposed such that a protruding, tip end of said bead faces one of said cylinder head and said cylinder block,
- wherein said base plate further includes a plurality of auxiliary beads formed around said plurality of openings with the exception of said combustion opening, and a peripheral bead formed around substantially the entire outer periphery of said base plate, and wherein a spring constant of a portion of said peripheral bead spaced from said auxiliary beads, by a predetermined distance, is smaller than the spring constant of a portion of said peripheral bead located more distant from said auxiliary beads than said predetermined distance.
Priority Claims (3)
Number |
Date |
Country |
Kind |
2-198183 |
Jul 1990 |
JPX |
|
2-202999 |
Jul 1990 |
JPX |
|
2-206026 |
Aug 1990 |
JPX |
|
Parent Case Info
This is a division of application No. 08/156,948 filed Nov. 24, 1993, now abandoned which is a continuation of application No. 07/736,323 filed Jul. 26, 1991, now abandoned.
US Referenced Citations (16)
Foreign Referenced Citations (31)
Number |
Date |
Country |
0230804 |
Aug 1987 |
EPX |
0369033 |
May 1990 |
EPX |
0459060 |
Dec 1991 |
EPX |
0465268 |
Jan 1992 |
EPX |
2136701 |
Dec 1972 |
FRX |
3741344 |
Jun 1989 |
DEX |
59-188351 |
Dec 1984 |
JPX |
59-188955 |
Dec 1984 |
JPX |
60-18247 |
Feb 1985 |
JPX |
61-41960 |
Mar 1986 |
JPX |
0255251 |
Nov 1986 |
JPX |
62-86459 |
Jun 1987 |
JPX |
0261761 |
Nov 1987 |
JPX |
62-278375 |
Dec 1987 |
JPX |
61-14748 |
Jan 1988 |
JPX |
112261 |
Jul 1988 |
JPX |
0210464 |
Sep 1988 |
JPX |
0246572 |
Oct 1988 |
JPX |
64-8556 |
Jan 1989 |
JPX |
64-35057 |
Feb 1989 |
JPX |
35057 |
Feb 1989 |
JPX |
0079471 |
Mar 1989 |
JPX |
0153872 |
Jun 1989 |
JPX |
1141354 |
Sep 1989 |
JPX |
26855 |
Jan 1990 |
JPX |
0118274 |
May 1990 |
JPX |
0118275 |
May 1990 |
JPX |
156155 |
Jul 1991 |
JPX |
268267 |
Aug 1950 |
CHX |
954327 |
Apr 1964 |
GBX |
1370125 |
Oct 1974 |
GBX |
Divisions (1)
|
Number |
Date |
Country |
Parent |
156948 |
Nov 1993 |
|
Continuations (1)
|
Number |
Date |
Country |
Parent |
736323 |
Jul 1991 |
|