| 摘要 |
An improved cutting tool for cutting asphalt composition shingles that are commonly utilized as a roofing material. In the preferred embodiment, the cutting tool has a handle section with a hand grippable handle, a head section with a head body attached at one end of the handle, a cutting blade pivotally attached to the head body and a vibrating mechanism disposed in the head body to vibrate the cutting blade so as to cut composition shingles faster and with less effort. The cutting blade can have one or more cutting edges for rearward or forward direction cutting. The vibrating mechanism can be disposed in the handle and can comprise an pneumatically or electrically powered motor that drives an eccentric weight. The head body and handle can be integral. One or more batteries disposed in the handle can provide electrical power to the electric motor.
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