Title:
ネジ山付留め具のための渦巻型駆動システム
Document Type and Number:
Japanese Patent JP5536163
Kind Code:
B2
Abstract:
A spiral drive system for threaded fasteners includes driver-engageable surfaces on the head end of the fastener in which at least some of the driver-engageable surfaces are defined by a spiral segment configured to maximize torque transmission while spreading the driving load over a broad driver-fastener interface to reduce the risk of development of high stress regions. Drivers and related tooling also are disclosed.
Inventors:
W Dodd Stacy
Application Number:
JP2012194230A
Publication Date:
July 02, 2014
Filing Date:
September 04, 2012
Export Citation:
Assignee:
Philips Screw Company
International Classes:
B25B15/00; B21J5/02; B21K1/46; F16B23/00
Domestic Patent References:
| JP55144975A | ||||
| JP57048481A | ||||
| JP59183365U | ||||
| JP29015420Y1 |
Foreign References:
| US5598753 |
Attorney, Agent or Firm:
Tetsuro Ikuta