Title:
フライホイール作動形手持ち式工具用速度コントローラ
Document Type and Number:
Japanese Patent JP2004523995
Kind Code:
A
Abstract:
A speed controller operates a DC-powered fastener drive assembly to efficiently drive fasteners from a DC power supply, thereby achieving a fully portable hand tool. In particular, the speed controller accelerates a flywheel with a DC motor to a target speed appropriate for the type of fastener and user selection. Thereafter, the speed controller causes the kinetic energy from the flywheel to be imparted to a linearly moving fastener driver. The speed controller is responsive to the rotational speed of the flywheel to ensure a consistent depth of drive and to actuate a clutch for an appropriate amount of time to couple the flywheel to the fastener driver. Thereby, consistent drives are achievement across a range of operating conditions (e.g., battery state of charge, type of fastener, mechanical tolerances and wear, motor performance, etc.).
Inventors:
Adams, Shane
Application Number:
JP2002552718A
Publication Date:
August 05, 2004
Filing Date:
December 21, 2001
Export Citation:
Assignee:
Senco Products, Inc.
International Classes:
B25C1/00; B25C1/06; B25C5/15; H02P1/18; H02P3/08; H02P7/29; (IPC1-7): H02P1/18; B25C1/06; B25C5/15; H02P5/17
Domestic Patent References:
| JPH08197455A | 1996-08-06 | |||
| JPH10328898A | 1998-12-15 | |||
| JPH04270098A | 1992-09-25 | |||
| JPS61255795A | 1986-11-13 | |||
| JPH0850671A | 1996-02-20 | |||
| JPH09507172A | 1997-07-22 | |||
| JPS5639881A | 1981-04-15 |
Foreign References:
| EP0546834A1 | 1993-06-16 |
Attorney, Agent or Firm:
Michiteru Soga
Michiharu Soga
Hidetoshi Furukawa
Suzuki Kenchi
Kajinami order
Nakamura Rei
Michiharu Soga
Hidetoshi Furukawa
Suzuki Kenchi
Kajinami order
Nakamura Rei