Closure plugs

Details Closure plugs Closure plugs

1996-05-09

1997-07-22

Solis, Erick R.

Internal-combustion engines

Accessories

Covers, trays, vibrators, corrosion inhibitors, air filters

123 4115, 277207R, 411915, F01P 1100

Patent

active

056495110

ABSTRACT:
A washerless closure plug for closing althreaded opening in the block of automotive engines includes an externally threaded nipple surrounded by a sharp shoulder, which shoulder is provided with a pair of forwardly facing ribs. When the nipple is screwed into an engine block the ribs form a seal with the block wall to resist leakage from the block and to damp the transmission of vibrational forces from the block to the closure plug which tend to unscrew the closure plug from the block.

REFERENCES:
patent: 1227529 (1917-05-01), Clarke
patent: 2824945 (1958-02-01), Derumaux
patent: 2832916 (1958-04-01), Morse
patent: 3171016 (1965-02-01), Sukala
patent: 4159138 (1979-06-01), Melone
patent: 4657460 (1987-04-01), Bien
patent: 4828275 (1989-05-01), Udagawa
patent: 4948318 (1990-08-01), Nottelmann et al.

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