Internal-combustion engines – Igniters – Sparkers
Patent
1998-03-05
1999-09-07
Arola, Dave W.
Internal-combustion engines
Igniters
Sparkers
285 38, 285316, F02P 100
Patent
active
059470712
ABSTRACT:
The present invention is a tool free quick change spark plug mechanism. It includes a head insert, a spark plug and a locking housing. The head insert has a threaded base to be inserted into a spark plug port of an internal combustion engine. It is generally cylindrical and hollow, and has either a locking groove or an extended locking mechanism on its outside wall above the threaded base. The plug is generally cylindrical and elongated with an electrode for sparking and a terminal for a wire attachment, and has a seal with a greater diameter than the lower end of the plug for seating within the head insert. The locking housing is hollow and cylindrical to fit over the spark plug and head insert, and has on its inside wall, the other of the locking groove and extended locking mechanism. It also has an upper portion and a lower portion; these being telescopically interconnected and having a first, locked position wherein the upper portion engages the locking mechanism to secure the locking housing to the head insert, and a second, unlocked position.
REFERENCES:
patent: 1007806 (1911-11-01), Smith
patent: 1131154 (1915-03-01), Mosler
patent: 2081571 (1937-05-01), Baade
patent: 2297548 (1942-09-01), Fox
patent: 3747583 (1973-07-01), Spengler et al.
patent: 3761117 (1973-09-01), Shendure
patent: 4574620 (1986-03-01), Cohl
Arola Dave W.
Glynn, Esq. Kenneth P.
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