JPS6426011A - Screw device - Google Patents

Screw device

Info

Publication number
JPS6426011A
JPS6426011A JP17965887A JP17965887A JPS6426011A JP S6426011 A JPS6426011 A JP S6426011A JP 17965887 A JP17965887 A JP 17965887A JP 17965887 A JP17965887 A JP 17965887A JP S6426011 A JPS6426011 A JP S6426011A
Authority
JP
Japan
Prior art keywords
screw
driven
hexagonal prism
neck
recess
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP17965887A
Other languages
Japanese (ja)
Inventor
Kenichi Ishikawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MIYAGAWA KINZOKU KOGYO
MIYAGAWA KINZOKU KOGYO KK
Original Assignee
MIYAGAWA KINZOKU KOGYO
MIYAGAWA KINZOKU KOGYO KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MIYAGAWA KINZOKU KOGYO, MIYAGAWA KINZOKU KOGYO KK filed Critical MIYAGAWA KINZOKU KOGYO
Priority to JP17965887A priority Critical patent/JPS6426011A/en
Publication of JPS6426011A publication Critical patent/JPS6426011A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To enable a one-way screw to be taken out only by a special method without damaging other things by providing a hidden screw driven out means on the screw head. CONSTITUTION: A screw shaft 1 has a screw head 2 at one end. A hexagonal prism 5 is arranged on the top surface of the screw head 2 via a neck 4. The neck 4 and the hexagonal prism 5, as a setting-up tool, form the screw driven means B. A recess 6 as a hidden screw driven-out means C is arranged at the back of the screw head 2. The screw A can be set up by engaging the hexagonal prism 5 in the distal end of a box wrench and the like. After the setting, the hexagonal prism 5 is taken away by cutting off the neck 4. To drive out the screw, it is necessary to cut the periphery of the screw A with a file to expose the recess 6 at one side. The screw can then be driven out by a special screw driven-out tool such as turning around a protrusion engaged in the recess 6.
JP17965887A 1987-07-17 1987-07-17 Screw device Pending JPS6426011A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17965887A JPS6426011A (en) 1987-07-17 1987-07-17 Screw device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17965887A JPS6426011A (en) 1987-07-17 1987-07-17 Screw device

Publications (1)

Publication Number Publication Date
JPS6426011A true JPS6426011A (en) 1989-01-27

Family

ID=16069620

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17965887A Pending JPS6426011A (en) 1987-07-17 1987-07-17 Screw device

Country Status (1)

Country Link
JP (1) JPS6426011A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0522254U (en) * 1991-09-06 1993-03-23 日本精工株式会社 Tilt type steering device
JP2003254312A (en) * 2002-03-04 2003-09-10 Hironobu Kuroda Fastener component for preventing tampering and fastening structure
JP2014062604A (en) * 2012-09-21 2014-04-10 Toyota Motor Corp Bolt fastening structure for vehicle

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6056812B2 (en) * 1976-08-03 1985-12-12 シユ−ベルト、ウント、ザルツエル、マシ−ネンフアブリ−ク、アクチエンゲゼルシヤフト Method and device for removing separated contaminants from open-end spinning equipment

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6056812B2 (en) * 1976-08-03 1985-12-12 シユ−ベルト、ウント、ザルツエル、マシ−ネンフアブリ−ク、アクチエンゲゼルシヤフト Method and device for removing separated contaminants from open-end spinning equipment

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0522254U (en) * 1991-09-06 1993-03-23 日本精工株式会社 Tilt type steering device
JP2003254312A (en) * 2002-03-04 2003-09-10 Hironobu Kuroda Fastener component for preventing tampering and fastening structure
JP2014062604A (en) * 2012-09-21 2014-04-10 Toyota Motor Corp Bolt fastening structure for vehicle

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