Plug cap for insertion into a bore

Details Plug cap for insertion into a bore Plug cap for insertion into a bore

1995-08-17

1997-09-02

Dolinar, Andrew M.

Internal-combustion engines

Igniters

174152G, 248 56, 277212C, 277213, H01T 1304

Patent

active

056620950

ABSTRACT:
A plug cap freely mountable on or removable from an elongated bore, especially for a spark plug in internal combustion engines or the like. The plug cap is provided with a rain cover, seal, and a pipe-holding portion. The latter has, on its internal face, a circular groove and a plurality of protrusions projecting radially inwardly. These grooves and protrusions, and the deflection thereof on insertion into the bore, give elasticity to the seal and to the pipe-holding portion. When the plug cap is pressed into the bore, there is no curling up of the pipe-holding portion, thereby ensuring a reliable seal. After insertion, the protrusions of the pipe-holding portion, which are formed integrally with the seal, are pressed against the external face of the ignition pipe, so that the latter can be held more reliably.

REFERENCES:
patent: 3243240 (1966-03-01), Arthur
patent: 4637358 (1987-01-01), Yano et al.
patent: 4703136 (1987-10-01), Hauff
patent: 4906202 (1990-03-01), Germ
patent: 5377640 (1995-01-01), Kobayashi
patent: 5454573 (1995-10-01), Nijland

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