GB1313042A - Patch-type self-locking screw fasteners - Google Patents

Patch-type self-locking screw fasteners

Info

Publication number
GB1313042A
GB1313042A GB1338871A GB1338871A GB1313042A GB 1313042 A GB1313042 A GB 1313042A GB 1338871 A GB1338871 A GB 1338871A GB 1338871 A GB1338871 A GB 1338871A GB 1313042 A GB1313042 A GB 1313042A
Authority
GB
United Kingdom
Prior art keywords
fastener
thermoplastic material
blank
patch
valleys
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.)
Expired
Application number
GB1338871A
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.)
Long Lok Fasteners Corp
Original Assignee
Long Lok Fasteners Corp
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 Long Lok Fasteners Corp filed Critical Long Lok Fasteners Corp
Publication of GB1313042A publication Critical patent/GB1313042A/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
    • F16B39/34—Locking by deformable inserts or like parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
    • B29C69/005—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore cutting-off or cutting-out a part of a strip-like or sheet-like material, transferring that part and fixing it to an article
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2001/00—Articles provided with screw threads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2001/00—Articles provided with screw threads
    • B29L2001/002—Bolts
    • 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
    • F16B33/00—Features common to bolt and nut
    • F16B33/06—Surface treatment of parts furnished with screw-thread, e.g. for preventing seizure or fretting

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

1313042 Coated threaded fasteners LONGLOK FASTENERS CORP 5 May 1971 [13 May 1970 19 April 1971] 13388/71 Heading B2E [Also in Division F2] A threaded fastener having self-locking characteristics by virtue of a patch of thermoplastic material blended to a plurality of threads of the fastener is produced by heating the fastener to a temperature in excess of the melting point of the thermoplastic material but below the decomposition temperature thereof, and applying a solid unitary blank of the thermoplastic material to the heated fastener at a preselected location thereon to cause the heated crests of the threads engaged with the blank to divide the blank into discrete segments, which segments melt and flow into valleys of adjacent threads at the preselected location to bond to adjacent flanks of the threads defining the valleys and form a cohesive patch of solid material at the preselected location. The thermoplastic material may be polyester, preferably polyalkylene phthalates. Other suitable polyester resins are listed. The fastener may be a nut or a bolt and may be degreased and/or grit blasted prior to application of the thermoplastic material. The fasteners may be cadmium-plated or preferably of carbon steel and plated with cadmium after the patch is applied. As shown in Fig. 5 a blank 22 of thermoplastic material is deposited on the screw thread of a bolt 20, heated to above the melting point of the thermoplastic material and a pressure shoe 25 contacted with the blank 22 under the pressure of a spring for about one second. The softened blank sags into the valleys of the screw thread and forms pools 28 on the bottoms of the valleys of the screw thread as shown in Fig. 7. Preferably the heated fastener is then quenched in water. The resiliency of the plastics patch may be increased by subsequently soaking the, fastener in an oven after the quenching. In another embodiment a pressure shoe to form the plastics strip to the curved configuration of the screw fastener is in the form of a metal cradle having a longitudinal cavity that conforms to the cross-sectional curvature of the lower half of the horizontal screw fastener (Figs. 8-14 not shown).
GB1338871A 1970-05-13 1971-05-05 Patch-type self-locking screw fasteners Expired GB1313042A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US3696070A 1970-05-13 1970-05-13
US12688271A 1971-04-19 1971-04-19

Publications (1)

Publication Number Publication Date
GB1313042A true GB1313042A (en) 1973-04-11

Family

ID=26713663

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1338871A Expired GB1313042A (en) 1970-05-13 1971-05-05 Patch-type self-locking screw fasteners

Country Status (7)

Country Link
JP (1) JPS5246337B1 (en)
BE (1) BE767059A (en)
DE (1) DE2123485C3 (en)
FR (1) FR2088546B1 (en)
GB (1) GB1313042A (en)
NL (1) NL158117B (en)
SE (1) SE373529B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100423856C (en) * 2003-08-20 2008-10-08 中国第一汽车集团公司 Method for improving binding strength of coating on internal multiple keys

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6626524B2 (en) 2018-03-29 2019-12-25 日本碍子株式会社 Electric heating type catalyst carrier

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR6896470D0 (en) * 1967-02-17 1973-02-20 Standard Pressed Steel Co METHOD OF MANUFACTURING ELEMENTS CATCHING FEMALE FILETATES AND RESULTING PRODUCTS

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100423856C (en) * 2003-08-20 2008-10-08 中国第一汽车集团公司 Method for improving binding strength of coating on internal multiple keys

Also Published As

Publication number Publication date
NL7106358A (en) 1971-11-16
BE767059A (en) 1971-10-01
SE373529B (en) 1975-02-10
NL158117B (en) 1978-10-16
DE2123485B2 (en) 1978-02-23
DE2123485A1 (en) 1971-11-25
DE2123485C3 (en) 1978-11-02
FR2088546B1 (en) 1977-08-05
FR2088546A1 (en) 1972-01-07
JPS5246337B1 (en) 1977-11-24

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years