Title:
MANUAL BOOSTER TIGHTENING DEVICE
Document Type and Number:
Japanese Patent JPH0985635
Kind Code:
A
Abstract:
To provide a manual booster tightening device of small and lightweight type capable of generating the prescribed torque.
A plurality of planetary gears 22A to 22C revolving under rotation between an internal gear 20 and a sun gear 21 laid at the center thereof are arranged around the sun gear 21. The planetary gears 22A to 22C respectively have roller bearings 28 around shafts 23A to 23C, thereby restraining the occurrence of a torque loss due to a slip.
Inventors:
KOIZUMI YUJI
SHIGETOMI NAGAMICHI
YAGAWA SHOJI
NAKANO MASATERU
NAKATSUKA TOMOYUKI
SHIGETOMI NAGAMICHI
YAGAWA SHOJI
NAKANO MASATERU
NAKATSUKA TOMOYUKI
Application Number:
JP24006395A
Publication Date:
March 31, 1997
Filing Date:
September 19, 1995
Export Citation:
Assignee:
HITACHI BUILDING SYST CO LTD
International Classes:
B25B17/00; (IPC1-7): B25B17/00
Attorney, Agent or Firm:
Kenjiro Take (2 outside)