Method for making a seal ring

Details Method for making a seal ring Method for making a seal ring

1998-09-15

2000-07-11

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

With severing, removing material from preform mechanically,...

2643289, 26432812, B29C 3700, B29C 4500

Patent

active

060868058

ABSTRACT:
In the manufacture of a seal ring having a cut portion at one position on the circumference by injecting a molten molding material from a gate into a cavity of a forming die, the gate is provided at a position apart from the opposite position to the cut, portion of the seal ring. In the case of a seal ring with a weld portion, the weld portion is set away from the cut portion.

REFERENCES:
patent: 2199144 (1940-04-01), Tegarty
patent: 4432925 (1984-02-01), Holtzberg et al.
patent: 4511184 (1985-04-01), Schauf et al.
patent: 5225136 (1993-07-01), Furugohir et al.
patent: 5628519 (1997-05-01), Kakehi
A. Whelan, "Injection Moulding Machines", Elsevier Applied Science Publishers, pp. 251, 285-286, 1984.

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