Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1992-08-31
1994-03-15
Cuchlinski, Jr., William A.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277236, 277215, 277231, 298883, F16J 1506
Patent
active
052941353
ABSTRACT:
This invention provides a metal gasket and its production method which prevents damage to folded portions by fold-machining and damage to metal materials after fastening, and expands the range of selection of materials for elastic metal plates, by reducing the thickness of a predetermined region of a elastic metal plate at which folded portions are to be formed. The thickness of the folded portion of the elastic metal plate is reduced from the folding side in an inner region of folded base portions and in regions in which folded free ends are positioned. Bend-machining is made gently at the folded base portions subjected to fold-bend machining, and the folded base portions each have a gap there-inside. The folded free ends do not come into contact with the elastic metal plate due to recessed surfaces. Accordingly, cracks and wrinkles do not occur at the folded base portions, and the folded free ends do not leave friction traces on the elastic metal plate.
REFERENCES:
patent: 3053544 (1962-09-01), Gorsica
patent: 4121846 (1978-10-01), Skrycki
patent: 4213620 (1980-07-01), Kennedy et al.
patent: 4836562 (1989-06-01), Yoshino
Inoue Kunitoshi
Kawaguchi Shigeru
Kubouchi Kenji
Uemura Hiroshi
Cuchlinski Jr. William A.
Folker James K.
Nippon Gasket Co. Ltd.
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