PORTABLE DRIVE Russian patent published in 2012 - IPC B25F5/02 B25G1/10 

FIELD: process engineering.

SUBSTANCE: invention relates to portable drive grip design. Proposed drive comprises casing and drive motor. Said casing comprises rear end flutes and two flutes of side surfaces. Rear end flute servers to receive user skin between thumb and forefinger. Rear end flute is made on casing rear end surface located on the side opposite the drive. Flutes of side surfaces serve to receive user thumb and forefinger. Flutes of side surfaces are made on both side surfaces of the casing. At least, one flute of side surfaces comprises variable-depth section. Note here that depth of, at least one flute of side surfaces decreased toward casing rear end surface.

EFFECT: decreased user tiredness in work.

13 cl, 17 dwg