Washerless block heater

Details Washerless block heater Washerless block heater

1995-10-24

1996-09-10

Solis, Erick R.

Internal-combustion engines

With heating means

219208, 392453, 411915, F02N 1702

Patent

active

055535780

ABSTRACT:
A washerless block heater for 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 heater body which tend to unscrew the heater 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 (1979-05-01), 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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