Title:
【発明の名称】トルク衝撃供給動力工具
Document Type and Number:
Japanese Patent JP3038221
Kind Code:
B2
Abstract:
A torque impulse power tool primarily intended for tightening threaded joints comprises a housing (10), a rotation motor (11), a torque impulse generating mechanism (13), and a reduction gearing (12) coupling the impulse mechanism (13) to the motor (11). A torsion spring (21) is associated with the reduction gearing (12) to reduce substantially the difference in deceleration between the motor (11) and the impulse mechanism (13) by yielding elastically to the driving and inertia forces of the motor (11) and the gearing (12) during each impulse generation. The torsion spring (21) is connected to absorb the reaction torque peaks developed in the gearing (12) or the driving torque peaks between the gearing (12) and the impulse mechanism (13).
Inventors:
Gunner Christer Hanson
Application Number:
JP29409689A
Publication Date:
May 08, 2000
Filing Date:
November 14, 1989
Export Citation:
Assignee:
ATLAS COPCO TOOLS AKTIE BOLAG
International Classes:
B23B45/16; B25B21/00; B25B21/02; B25D15/00; (IPC1-7): B25B21/02
Domestic Patent References:
| JP528599A | ||||
| JP3910644B1 |
Attorney, Agent or Firm:
Shigeru Yagita (3 outside)