Combustion-type power tool

Details Combustion-type power tool Combustion-type power tool

2006-10-17

2006-10-17

Smith, Scott A. (Department: 3721)

Elongated-member-driving apparatus

Explosive-type driving means

With plunger

C227S130000

Reexamination Certificate

active

07121442

ABSTRACT:
A combustion-type nail driver uses a motor for driving a fan. A motor holder formed from plastic accommodates the motor. A cylinder head has a motor holder receiving portion in which the motor holder is slidably movably disposed. A coil spring has one end secured to the motor holder and another end secured to the cylinder head to thereby support the motor holder. Initial acceleration applied to the motor when combustion occurs can be suppressed and impact imparted upon the motor can also be suppressed by friction between the outer periphery of the motor holder and the inner periphery of the motor holder receiving portion. A heat shielding plate is interposed between the lower end surface of the motor and the cylinder head in order to prevent hot air combustion gas from entering into the motor.

REFERENCES:
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patent: 7040520 (2006-05-01), Turk
patent: 2004/0050901 (2004-03-01), Turk
patent: 2004/0173657 (2004-09-01), Turk
patent: 1 488 891 (2004-12-01), None

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