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 JP4801837
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:
JP2000519219A
Publication Date:
October 26, 2011
Filing Date:
October 28, 1998
Export Citation:
Assignee:
Philips Screw Company
International Classes:
F16B23/00; B21K1/46; B25B15/00
Domestic Patent References:
| JP5747013A | ||||
| JP55144975A |
Foreign References:
| US5598753 | ||||
| FR1339685A1 |
Attorney, Agent or Firm:
Tetsuro Ikuta