Title:
分離したねじスパイラル及び異なる部分フランク角を備えるねじ形成ボルト
Document Type and Number:
Japanese Patent JP6526342
Kind Code:
B2
Abstract:
A thread-forming screw has a shank which, in a front region of the shank, has a tip for insertion into a bore in a substrate, and in a rear region of the shank, has a drive for transmitting a torque to the shank. The shank has a spiral-shaped groove and a thread spiral which is inserted into the spiral-shaped groove. The spiral-shaped groove has a front flank and a rear flank disposed opposite the front flank. The front flank, at least regionally, has a different part flank angle than the rear flank.
Inventors:
Hakenholt, Christoph
Winkler, Bernhard
Schneider, roland
Spring, Robert
Nguyen, Phu Toan
Winkler, Bernhard
Schneider, roland
Spring, Robert
Nguyen, Phu Toan
Application Number:
JP2018535252A
Publication Date:
June 05, 2019
Filing Date:
October 04, 2016
Export Citation:
Assignee:
Maschinenbau Hilti OHG
International Classes:
F16B33/02; F16B35/00
Domestic Patent References:
| JP2013542381A | ||||
| JP2008502855A |
Foreign References:
| US6276883 | ||||
| US4040326 | ||||
| US2745457 | ||||
| CN102052378A |
Attorney, Agent or Firm:
Patent Corporation Nagato & Partners