FR2301723A1 - Torque indicative nuts or bolts - have ribs projecting radially from apices yielding at limit torque to cause spanner slip - Google Patents

Torque indicative nuts or bolts - have ribs projecting radially from apices yielding at limit torque to cause spanner slip

Info

Publication number
FR2301723A1
FR2301723A1 FR7505402A FR7505402A FR2301723A1 FR 2301723 A1 FR2301723 A1 FR 2301723A1 FR 7505402 A FR7505402 A FR 7505402A FR 7505402 A FR7505402 A FR 7505402A FR 2301723 A1 FR2301723 A1 FR 2301723A1
Authority
FR
France
Prior art keywords
torque
nuts
apices
bolts
yielding
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.)
Granted
Application number
FR7505402A
Other languages
French (fr)
Other versions
FR2301723B1 (en
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.)
OUEST CIE
Original Assignee
OUEST CIE
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 OUEST CIE filed Critical OUEST CIE
Priority to FR7505402A priority Critical patent/FR2301723A1/en
Publication of FR2301723A1 publication Critical patent/FR2301723A1/en
Application granted granted Critical
Publication of FR2301723B1 publication Critical patent/FR2301723B1/fr
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B31/00—Screwed connections specially modified in view of tensile load; Break-bolts
    • F16B31/02—Screwed connections specially modified in view of tensile load; Break-bolts for indicating the attainment of a particular tensile load or limiting tensile load

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Abstract

The torque indicative nuts or bolts, are for precision tightening with lower strength materials, and are accessible for re-tightening or unfastening. Ribs (4) project radially from each of the apices of conventioanl hexagonal nuts (3) to induce slipping of the spanner at specific torque by yeilding elastically. The nut is flanged (2) and has two sections, one flanged and one (1) of solid conventional hexagonal from, for retightening or unfastening. The ribs (4) are cold metal formed or plastic injection moulded.
FR7505402A 1975-02-21 1975-02-21 Torque indicative nuts or bolts - have ribs projecting radially from apices yielding at limit torque to cause spanner slip Granted FR2301723A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7505402A FR2301723A1 (en) 1975-02-21 1975-02-21 Torque indicative nuts or bolts - have ribs projecting radially from apices yielding at limit torque to cause spanner slip

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7505402A FR2301723A1 (en) 1975-02-21 1975-02-21 Torque indicative nuts or bolts - have ribs projecting radially from apices yielding at limit torque to cause spanner slip

Publications (2)

Publication Number Publication Date
FR2301723A1 true FR2301723A1 (en) 1976-09-17
FR2301723B1 FR2301723B1 (en) 1978-02-03

Family

ID=9151526

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7505402A Granted FR2301723A1 (en) 1975-02-21 1975-02-21 Torque indicative nuts or bolts - have ribs projecting radially from apices yielding at limit torque to cause spanner slip

Country Status (1)

Country Link
FR (1) FR2301723A1 (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0001935A1 (en) * 1977-11-09 1979-05-16 V.S.I. Corporation Threaded fasteners, threaded fastener elements and fastening processes using same
US4189976A (en) * 1978-06-29 1980-02-26 Fargo Manufacturing Company, Inc. Dual head fastener
FR2515301A1 (en) * 1981-09-14 1983-04-29 Utilisation Ration Gaz IMPROVEMENT IN FLOW LIMITERS FOR GAS BOTTLES
EP0217746A1 (en) * 1985-09-18 1987-04-08 HILTI Aktiengesellschaft Wall tie
EP0219456A1 (en) * 1985-09-18 1987-04-22 HILTI Aktiengesellschaft Wall tie
FR2658109A1 (en) * 1990-02-13 1991-08-16 Rasmussen Gmbh DEVICE FOR ENSURING THE APPLICATION OF A PREDETERMINED ROTATION TORQUE WHEN TIGHTENING A SCREW OR THE LIKE.
US5452974A (en) * 1993-03-04 1995-09-26 Air Industries Corporation Deformable locking fastener system and method of use
US5692419A (en) * 1993-03-04 1997-12-02 Air Industries Corporation Deformable locking fastener system and method of use
FR2839640A1 (en) * 2002-05-14 2003-11-21 Xavier Renard Bone screw for use in orthopaedic surgery, e.g. to join to bones together or a ligament or plate with a bone has cylindrical part of tip that separates from hole in threaded shaft when set torsional force is exceeded
DE102021209796A1 (en) 2021-09-06 2023-03-09 Zf Friedrichshafen Ag Screw plug, in particular screw plug of an outlet opening of a housing

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2204243A5 (en) * 1972-10-20 1974-05-17 Elco Industries Inc

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2204243A5 (en) * 1972-10-20 1974-05-17 Elco Industries Inc

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0001935A1 (en) * 1977-11-09 1979-05-16 V.S.I. Corporation Threaded fasteners, threaded fastener elements and fastening processes using same
US4189976A (en) * 1978-06-29 1980-02-26 Fargo Manufacturing Company, Inc. Dual head fastener
FR2515301A1 (en) * 1981-09-14 1983-04-29 Utilisation Ration Gaz IMPROVEMENT IN FLOW LIMITERS FOR GAS BOTTLES
EP0217746A1 (en) * 1985-09-18 1987-04-08 HILTI Aktiengesellschaft Wall tie
EP0219456A1 (en) * 1985-09-18 1987-04-22 HILTI Aktiengesellschaft Wall tie
FR2658109A1 (en) * 1990-02-13 1991-08-16 Rasmussen Gmbh DEVICE FOR ENSURING THE APPLICATION OF A PREDETERMINED ROTATION TORQUE WHEN TIGHTENING A SCREW OR THE LIKE.
US5452974A (en) * 1993-03-04 1995-09-26 Air Industries Corporation Deformable locking fastener system and method of use
US5692419A (en) * 1993-03-04 1997-12-02 Air Industries Corporation Deformable locking fastener system and method of use
FR2839640A1 (en) * 2002-05-14 2003-11-21 Xavier Renard Bone screw for use in orthopaedic surgery, e.g. to join to bones together or a ligament or plate with a bone has cylindrical part of tip that separates from hole in threaded shaft when set torsional force is exceeded
DE102021209796A1 (en) 2021-09-06 2023-03-09 Zf Friedrichshafen Ag Screw plug, in particular screw plug of an outlet opening of a housing

Also Published As

Publication number Publication date
FR2301723B1 (en) 1978-02-03

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Legal Events

Date Code Title Description
ST Notification of lapse