GB2002865A - Lock nut - Google Patents

Lock nut

Info

Publication number
GB2002865A
GB2002865A GB7829865A GB7829865A GB2002865A GB 2002865 A GB2002865 A GB 2002865A GB 7829865 A GB7829865 A GB 7829865A GB 7829865 A GB7829865 A GB 7829865A GB 2002865 A GB2002865 A GB 2002865A
Authority
GB
United Kingdom
Prior art keywords
plates
lock nut
nut
box
threads
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
GB7829865A
Other versions
GB2002865B (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.)
NORMA SpA
Original Assignee
NORMA SpA
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 NORMA SpA filed Critical NORMA SpA
Publication of GB2002865A publication Critical patent/GB2002865A/en
Application granted granted Critical
Publication of GB2002865B publication Critical patent/GB2002865B/en
Expired 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
    • F16B39/00—Locking of screws, bolts or nuts
    • F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
    • F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
    • F16B39/284—Locking by means of elastic deformation
    • 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
    • F16B37/00—Nuts or like thread-engaging members
    • F16B37/12—Nuts or like thread-engaging members with thread-engaging surfaces formed by inserted coil-springs, discs, or the like; Independent pieces of wound wire used as nuts; Threaded inserts for holes

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bolts, Nuts, And Washers (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
  • Forging (AREA)
  • Transmission Devices (AREA)
  • Lining And Supports For Tunnels (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)
  • Dowels (AREA)

Abstract

A locknut comprises a hexagonal, apertured, nut box containing two stacked hexagonal dished plates which engage the inside wall of the box to prevent their rotation. Bent over flaps on the box hold the plates in place. Threads are formed in the bores of the plates by a die tap after assembly of the lock nut. The thread on each plate is at least 1.2t, where t is the helical pitch. Tightening the nut produces flexible distortion of the dished plates causing binding of their threads on a bolt. The lock nut is re-usable. <IMAGE>
GB7829865A 1977-07-14 1978-07-14 Lock nut Expired GB2002865B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT25722/77A IT1115369B (en) 1977-07-14 1977-07-14 SELF-LOCKING NUT DEVICE AND PROCEDURE FOR ITS MANUFACTURE

Publications (2)

Publication Number Publication Date
GB2002865A true GB2002865A (en) 1979-02-28
GB2002865B GB2002865B (en) 1982-09-02

Family

ID=11217536

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7829865A Expired GB2002865B (en) 1977-07-14 1978-07-14 Lock nut

Country Status (7)

Country Link
BR (1) BR7804534A (en)
DE (1) DE2829385A1 (en)
ES (1) ES244789Y (en)
FR (1) FR2397558A1 (en)
GB (1) GB2002865B (en)
IT (1) IT1115369B (en)
SE (1) SE7807795L (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0271305A1 (en) * 1986-12-08 1988-06-15 Pac-Fasteners Laminated nut with one way installation
EP0790417A1 (en) * 1996-02-13 1997-08-20 Urama S.r.l. Self-locking nut

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4383787A (en) * 1980-09-16 1983-05-17 Reynolds Richard L Free spinning laminated nut with automatic lock
US4940377A (en) * 1989-08-02 1990-07-10 Pac-Fasteners, A Michigan Partnership Laminated nut having cage with nested fingers and method of manufacture
US5785477A (en) * 1996-11-07 1998-07-28 Senco Products, Inc. Laminated internally threaded fastener

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0271305A1 (en) * 1986-12-08 1988-06-15 Pac-Fasteners Laminated nut with one way installation
EP0790417A1 (en) * 1996-02-13 1997-08-20 Urama S.r.l. Self-locking nut

Also Published As

Publication number Publication date
IT1115369B (en) 1986-02-03
ES244789Y (en) 1980-08-16
FR2397558B3 (en) 1981-02-13
ES244789U (en) 1980-03-01
GB2002865B (en) 1982-09-02
FR2397558A1 (en) 1979-02-09
DE2829385A1 (en) 1979-02-08
SE7807795L (en) 1979-01-15
BR7804534A (en) 1979-03-06

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee