CA2240801A1 - Self-torquing nut - Google Patents

Self-torquing nut Download PDF

Info

Publication number
CA2240801A1
CA2240801A1 CA 2240801 CA2240801A CA2240801A1 CA 2240801 A1 CA2240801 A1 CA 2240801A1 CA 2240801 CA2240801 CA 2240801 CA 2240801 A CA2240801 A CA 2240801A CA 2240801 A1 CA2240801 A1 CA 2240801A1
Authority
CA
Canada
Prior art keywords
nut
torque
shear
stud
pins
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
CA 2240801
Other languages
French (fr)
Other versions
CA2240801C (en
Inventor
Rodney Gibbons
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to CA 2240801 priority Critical patent/CA2240801C/en
Publication of CA2240801A1 publication Critical patent/CA2240801A1/en
Application granted granted Critical
Publication of CA2240801C publication Critical patent/CA2240801C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • F16B31/021—Screwed connections specially modified in view of tensile load; Break-bolts for indicating the attainment of a particular tensile load or limiting tensile load by means of a frangible part
    • 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
    • F16B41/00—Measures against loss of bolts, nuts, or pins; Measures against unauthorised operation of bolts, nuts or pins
    • F16B41/005—Measures against unauthorised operation of bolts, nuts or pins

Landscapes

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

Abstract

A tamper-proof, precision, torque limiting nut device is disclosed. The device comprises an inner collar member having a threaded bore to receive a bolt, stud or the like and an outer sleeve member interconnected to the collar by pins or by welds having a shear strength up to a predetermined torque value. The nut can be tightened on a bolt or stud up to the predetermined shear value, above which the pins or welds shear, to achieve tightening of the nut to the desired torque without the use of a torque wrench.
Overtorquing and undertorquing are prevented, and tampering with the nut is substantially obviated.
CA 2240801 1998-06-16 1998-06-16 Self-torquing nut Expired - Fee Related CA2240801C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA 2240801 CA2240801C (en) 1998-06-16 1998-06-16 Self-torquing nut

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA 2240801 CA2240801C (en) 1998-06-16 1998-06-16 Self-torquing nut

Publications (2)

Publication Number Publication Date
CA2240801A1 true CA2240801A1 (en) 1999-12-16
CA2240801C CA2240801C (en) 2003-04-01

Family

ID=4162559

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2240801 Expired - Fee Related CA2240801C (en) 1998-06-16 1998-06-16 Self-torquing nut

Country Status (1)

Country Link
CA (1) CA2240801C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1527799A2 (en) * 2003-10-29 2005-05-04 G. Participations Permanent safety anchoring device with secured fastening
DE102008048319A1 (en) 2008-09-22 2010-04-01 Ejot Gmbh & Co. Kg Torque transmission member
US20150082798A1 (en) * 2013-09-25 2015-03-26 Rolls-Royce Plc Component for attaching to a wall

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1527799A2 (en) * 2003-10-29 2005-05-04 G. Participations Permanent safety anchoring device with secured fastening
EP1527799A3 (en) * 2003-10-29 2005-07-27 G. Participations Permanent safety anchoring device with secured fastening
DE102008048319A1 (en) 2008-09-22 2010-04-01 Ejot Gmbh & Co. Kg Torque transmission member
US20150082798A1 (en) * 2013-09-25 2015-03-26 Rolls-Royce Plc Component for attaching to a wall
US9903589B2 (en) * 2013-09-25 2018-02-27 Rolls-Royce Plc Component for attaching to a wall

Also Published As

Publication number Publication date
CA2240801C (en) 2003-04-01

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20130618