Power working machine with internal combustion engine having...

Details Power working machine with internal combustion engine having... Power working machine with internal combustion engine having...

2005-02-22

2005-02-22

Yuen, Henry C. (Department: 3747)

Internal-combustion engines

Accessories

Covers, trays, vibrators, corrosion inhibitors, air filters

Reexamination Certificate

active

06857413

ABSTRACT:
A spark plug guard can be switched between a spark-plug covering position to protect a spark plug and a spark-plug opening position. An operator displaces the spark plug guard from the spark-plug covering position to the spark-plug opening position, thereby obtaining a wide working space to perform the maintenance and inspection of the spark plug efficiently. The spark plug guard has a function of fixing a predetermined part in the spark-plug covering position. Consequently, the need for a part fixing member which was conventionally required for fixing the predetermined part to the engine body is eliminated, thus contributing to a decrease in the weight of the whole internal combustion engine and to cost reduction.

REFERENCES:
patent: 2012699 (1935-08-01), Walters
patent: D200774 (1965-04-01), Livingston
patent: 3650249 (1972-03-01), Honda
patent: 3738345 (1973-06-01), Gumtow
patent: 4373478 (1983-02-01), Rifat
patent: 7-30913 (1995-07-01), None

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