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US 5,725,304 AGranted
Battery concrete vibrator
AssigneeMakita Corporation
InventorMasahiko Inai
Life of this patent
Estimating the term…
Abstract
A concrete vibrator 10 having a direct current motor 3 and a battery pack 19 mounted in a handle housing 17. The battery pack 19 is attached to a hook 75 provided in an opening of the handle housing 17, and a battery cover 80 is attached to completely cover the battery pack 19. Air inlet ports 41, 42 and air exhaust ports 43, 44, 45 are formed in a lower side of a concrete vibrator body between the lower end of handle housing 17 and the lower forward end of a motor housing 11.
Claims7
A concrete vibrator comprising:
- a concrete vibrator body including a motor housing with a forward end and a rear end and a handle housing connected to the rear end of said motor housing, and said concrete vibrator body having a lower side;
- a vibration rod projecting from the forward end of said motor housing;
- a direct current motor being housed in said motor housing for driving said vibration rod about a rotational axis;
- and
- a battery being housed in said handle housing for powering said motor;
- wherein said handle housing includes a lower part for accommodating said battery;
- and
- air inlet ports and air exhaust ports are provided in the lower side of said concrete vibrator body and located between the lower end of said handle housing and the forward end of said motor housing.
5 more elements
Dependencies are inferred from the claim text.