Title:
【発明の名称】動力計ねじまたはナット
Document Type and Number:
Japanese Patent JP3237847
Kind Code:
B2
Abstract:
PCT No. PCT/SE92/00519 Sec. 371 Date May 16, 1995 Sec. 102(e) Date May 16, 1995 PCT Filed Jul. 15, 1992 PCT Pub. No. WO94/02749 PCT Pub. Date Feb. 3, 1994A torque nut or screw that allows the nut to be tightened to a preset maximum torque, but prevents excess tightening. The nut or screw includes inner and outer threaded elements that extend along the same axis. The outer threaded element is tapered with respect to the axis. The fastener includes an inner fastening member (7) having fastening threads (8) and an outer female member (10) that is rotatable by means of a spanner, a pair of pliers, a screw driver, or other tool. The female member is connected to the inner fastening member by a coupling (13) having a sufficient strength to transfer to the inner fastening member a torque of a magnitude for which the fastening device is designed. The outer female member (10) is designed to be released upon tightening of the coupling and rotated relative to the inner fastening member (7), but not until the predetermined torque is exceeded. The coupling between the outer female (10) and the inner fastening member (7) includes a conical screw coupling.
Inventors:
Wetterbeck, Paul, Gunnar
Application Number:
JP50396994A
Publication Date:
December 10, 2001
Filing Date:
July 15, 1992
Export Citation:
Assignee:
Excelsior Development Inc.
International Classes:
F16B31/02; F16B; (IPC1-7): F16B31/02
Domestic Patent References:
| JP341206A | ||||
| JP5670215U |
Attorney, Agent or Firm:
Nobuyuki Kaneda (2 others)