DRIVE TOOL Russian patent published in 2014 - IPC A01B3/04 

FIELD: process engineering.

SUBSTANCE: drive tool comprises working member and main case. Said main case comprises first assembly and second assembly spinning about said first one, starting control element, starting interaction switch, starting locking element and locking interacting element. Locking control element can be manipulated by the user between locked and unlocked position to inhibit rotation of said first and second assemblies at as-locked position and allow it at as-unlocked position. Locking interacting switch is connected in power supply circuit to make said circuit with locked locking control element and to break it when it is unlocked. Besides, it incorporates extra mutual locking mechanism to allow displacement of starting control element to starting position with unlocked locking control element. Besides, the latter prevents displacement of locking control element to locked position with starting control element is at starting position.

EFFECT: more friendly use.

8 cl, 10 dwg