Patent Number: 7,131,404

Title: Combustion-type power tool having gas canister cooling arrangement

Abstract: A combustion-type power tool having a cooling arrangement for cooling a gas canister. The tool includes a housing having a gas canister accommodating section in which a gas canister is accommodated. An air passage is defined between the gas canister accommodating section and the gas canister accommodated therein. The gas canister accommodating section is formed with an air inlet port in communication with the air passage for introducing air into the air passage. Since air flows along the gas canister, the gas canister can be cooled. If the tool is provided with a fan, the rotation of the fan causes air suction passing through the air passage.

Inventors: Nishikawa; Tomomasa (Hitachinaka, JP), Akiba; Yoshitaka (Hitachinaka, JP), Hirai; Shoichi (Hitachinaka, JP), Fujisawa; Haruhisa (Hitachinaka, JP)

Assignee: Hitachi Koki Co., Ltd.

International Classification: F02B 71/00 (20060101); F02P 5/00 (20060101)

Expiration Date: 2019-11-07 0:00:00