HRP20191809T1 - Sustav pričvršćivanja koji omogućava uklanjanje komponenti nakon kvara sustava pričvršćivača - Google Patents

Sustav pričvršćivanja koji omogućava uklanjanje komponenti nakon kvara sustava pričvršćivača Download PDF

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Publication number
HRP20191809T1
HRP20191809T1 HRP20191809TT HRP20191809T HRP20191809T1 HR P20191809 T1 HRP20191809 T1 HR P20191809T1 HR P20191809T T HRP20191809T T HR P20191809TT HR P20191809 T HRP20191809 T HR P20191809T HR P20191809 T1 HRP20191809 T1 HR P20191809T1
Authority
HR
Croatia
Prior art keywords
nut
fastening system
accordance
fastening
fiber
Prior art date
Application number
HRP20191809TT
Other languages
English (en)
Inventor
Michael A. Lemacks
Original Assignee
Channell Commercial Corporation
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 Channell Commercial Corporation filed Critical Channell Commercial Corporation
Publication of HRP20191809T1 publication Critical patent/HRP20191809T1/hr

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B33/00Features common to bolt and nut
    • F16B33/006Non-metallic fasteners using screw-thread
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B37/00Nuts or like thread-engaging members
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00Independent underground or underwater structures; Retaining walls
    • E02D29/12Manhole shafts; Other inspection or access chambers; Accessories therefor
    • E02D29/14Covers for manholes or the like; Frames for covers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B31/00Screwed connections specially modified in view of tensile load; Break-bolts
    • F16B31/02Screwed connections specially modified in view of tensile load; Break-bolts for indicating the attainment of a particular tensile load or limiting tensile load
    • F16B31/021Screwed 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B35/00Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B37/00Nuts or like thread-engaging members
    • F16B37/005Nuts or like thread-engaging members into which threads are cut during screwing
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B37/00Nuts or like thread-engaging members
    • F16B37/04Devices for fastening nuts to surfaces, e.g. sheets, plates
    • F16B37/041Releasable devices
    • F16B37/042Releasable devices locking by rotation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B37/00Nuts or like thread-engaging members
    • F16B37/04Devices for fastening nuts to surfaces, e.g. sheets, plates
    • F16B37/044Nut cages
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B39/00Locking of screws, bolts or nuts
    • F16B39/02Locking of screws, bolts or nuts in which the locking takes place after screwing down
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B5/00Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
    • F16B5/02Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread
    • F16B5/0216Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread the position of the plates to be connected being adjustable
    • F16B5/0225Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread the position of the plates to be connected being adjustable allowing for adjustment parallel to the plane of the plates
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2600/00Miscellaneous
    • E02D2600/20Miscellaneous comprising details of connection between elements

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Structural Engineering (AREA)
  • Connection Of Plates (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
  • Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
  • Numerical Control (AREA)
  • Power Steering Mechanism (AREA)
  • Bolts, Nuts, And Washers (AREA)
  • Clamps And Clips (AREA)
  • Lining And Supports For Tunnels (AREA)

Claims (9)

1. Sustav pričvršćivanja (10) za pričvršćivanje pokrova na podzemni svod sadržava: vijak (12) s navojima (18); i kompozitnu polimernu maticu ojačanu vlaknima (14) koja ima navojni dio (22) koji se proteže kroz barem dio matice (14), naznačen time, da se navojni dio (22) otvara u smicanju nakon primanja vijka prije nego što se matica (14) i vijak (12) učvrste.
2. Sustav pričvršćivanja (1) u skladu s patentnim zahtjevom 1, naznačen time, da nadalje sadržava držač matice (16) veličine koja omogućava plutanje matice (14) unutar držača matice (16).
3. Sustav pričvršćivanja (10) u skladu s patentnim zahtjevom 1, naznačen time, da matica (14) nadalje uključuje dio za poravnavanje vijaka (28) bez navoja, smješten iznad navojnog dijela (22).
4. Sustav pričvršćivanja (10) u skladu s patentnim zahtjevom 1, naznačen time, da matica (14) ima dio vijka (34) koji je postavljen ispod navojnog dijela (22).
5. Sustav pričvršćivanja (10) u skladu s patentnim zahtjevom 1, naznačen time, da matica (14) nadalje uključuje uvodnu pregradu (30) i izlaznu pregradu (32) uz navojni dio (22).
6. Sustav pričvršćivanja (10) u skladu s patentnim zahtjevom 1, naznačen time, da matica (14) uključuje barem jedno krilo (36, 38) koje se proteže radijalno prema van od dijela matice (14), pri čemu su osobito prisutna dva krila (36, 38) a svako ima otvor za prihvat pričvrsnog uređaja (48, 49).
7. Sustav pričvršćivanja (10) u skladu s patentnim zahtjevom 2, naznačen time, da držač matice (16) ima šupljinu (40) za prihvat barem dijela matice (14) i veličinu za sprečavanje da se matica (14) potpuno okreće u držaču matice (16) i / ili pri čemu držač matice (16) ima rupe za pričvršćivanje.
8. Sustav pričvršćivanja (10) u skladu s patentnim zahtjevom 1, naznačen time, da je kompozitna polimerna matica (14) ojačana vlaknima staklenog najlona.
9. Sustav pričvršćivanja (10) u skladu s patentnim zahtjevom 1, pri čemu je kompozitna polimerna matica ojačana vlaknima (14) industrijska plastika s punilom od vlakana ili čestica, naznačen time, da je vlakno barem jedno od aramidnih vlakana, karbonskih vlakana, staklenih vlakana ili metalnih žica i / ili pri čemu je punilo za čestice osobito barem jedno od karbidnog, keramičkog ili mineralnog punila.
HRP20191809TT 2015-07-20 2019-10-04 Sustav pričvršćivanja koji omogućava uklanjanje komponenti nakon kvara sustava pričvršćivača HRP20191809T1 (hr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US201562194716P 2015-07-20 2015-07-20
US15/177,277 US10288106B2 (en) 2015-07-20 2016-06-08 Fastening system allowing component removal after fastener system failure
EP16180127.9A EP3121463B1 (en) 2015-07-20 2016-07-19 Fastening system allowing component removal after fastener system failure

Publications (1)

Publication Number Publication Date
HRP20191809T1 true HRP20191809T1 (hr) 2019-12-27

Family

ID=56851756

Family Applications (1)

Application Number Title Priority Date Filing Date
HRP20191809TT HRP20191809T1 (hr) 2015-07-20 2019-10-04 Sustav pričvršćivanja koji omogućava uklanjanje komponenti nakon kvara sustava pričvršćivača

Country Status (28)

Country Link
US (2) US20170023045A1 (hr)
EP (1) EP3121463B1 (hr)
JP (1) JP6267283B2 (hr)
KR (1) KR101965479B1 (hr)
CN (1) CN106369035B (hr)
AP (1) AP2016009311A0 (hr)
AU (1) AU2016204289B2 (hr)
BR (1) BR102016015861B1 (hr)
CA (1) CA2932633C (hr)
CL (1) CL2016001798A1 (hr)
CR (1) CR20160325A (hr)
CU (1) CU24460B1 (hr)
CY (1) CY1122405T1 (hr)
DK (1) DK3121463T3 (hr)
ES (1) ES2746573T3 (hr)
HR (1) HRP20191809T1 (hr)
HU (1) HUE046906T2 (hr)
IL (1) IL246495B (hr)
MX (1) MX2016008417A (hr)
MY (1) MY174667A (hr)
NZ (1) NZ721968A (hr)
PE (1) PE20170593A1 (hr)
PH (1) PH12016000236A1 (hr)
PL (1) PL3121463T3 (hr)
PT (1) PT3121463T (hr)
SA (1) SA116370748B1 (hr)
SG (1) SG10201605845YA (hr)
UA (1) UA117042C2 (hr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA3036247A1 (en) * 2018-03-15 2019-09-15 Hubbell Incorporated Lightweight molded cover
WO2020055624A1 (en) * 2018-09-14 2020-03-19 Illinois Tool Works Inc. Mounting system for box profile
CN109502047B (zh) * 2018-12-18 2022-01-25 贵州贵飞飞机设计研究院有限公司 一种用于飞机结构单面连接不合格螺栓孔的补偿方法
US11566654B2 (en) * 2018-12-19 2023-01-31 Whirlpool Corporation Integrally formed thread lock retention feature
CN110566550B (zh) * 2019-09-12 2021-10-01 攀钢集团攀枝花钢钒有限公司 螺钉连接结构
CN111181103A (zh) * 2020-01-03 2020-05-19 扬州朗日新能源科技有限公司 一种插接式接线盒
CN111049081A (zh) * 2020-01-09 2020-04-21 扬州朗日新能源科技有限公司 一种套接式接线盒
CN111130036A (zh) * 2020-01-09 2020-05-08 扬州朗日新能源科技有限公司 一种卡接式接线盒
CN112276151A (zh) * 2020-10-28 2021-01-29 中国航发贵州黎阳航空动力有限公司 一种六角螺母六方锁丝孔钻孔通用装置
CN113722861B (zh) * 2021-09-07 2023-07-18 北京航空航天大学 一种复合材料螺栓连接结构的强度和失效模式的预测方法

Family Cites Families (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2775916A (en) * 1953-10-07 1957-01-01 Union Insulating Co Inc Machine screw holes molded in plastic articles
US2832391A (en) 1954-03-16 1958-04-29 American Screw Co Nylon lock nut with split metal core to provide frictional and resilient locking action
DE2802465A1 (de) 1978-01-20 1979-07-26 United Carr Gmbh Bundmutter
US4717302A (en) * 1984-06-18 1988-01-05 Tiodize Company, Inc. Composite fastener
DE8512613U1 (de) 1985-04-29 1985-08-08 Rose, Friedhelm, 4952 Porta Westfalica Wasserdichtes Gehäuse, insbesondere für die Verkapselung elektrischer und elektronischer Bauteile
US4768907A (en) * 1986-07-14 1988-09-06 Gauron Richard F Gang nut assembly
CA1278202C (en) 1986-09-03 1990-12-27 Thomas R. Adams Composite fastener
DE3640208A1 (de) 1986-11-25 1987-04-30 Eberhard Prof Dipl Ing Seidel Gewindemutter aus faserverbundwerkstoff und verfahren zu ihrer herstellung
JPH035749U (hr) 1989-06-05 1991-01-21
US5006025A (en) 1989-12-13 1991-04-09 Avibank Mfg., Inc. Self-locking nut
US5083888A (en) * 1990-01-30 1992-01-28 Textron Inc. Composite threaded collar
US5431518A (en) * 1993-10-29 1995-07-11 Young; Donald M. Polymeric combination washer and nut
US5746561A (en) 1996-07-24 1998-05-05 Lockheed Martin Corporation Alignment tolerant fastening system
US6659698B2 (en) 2002-03-28 2003-12-09 Illinois Tool Works Inc. Torque resistant grommet
JP2000234344A (ja) * 1999-02-15 2000-08-29 Nippon Steel Fiber Kk マンホール用ファスナー
JP2001012429A (ja) * 1999-06-24 2001-01-16 Minamida:Kk ナット
US6171041B1 (en) * 1999-11-02 2001-01-09 Visteon Global Technologies, Inc. Screw retaining mechanism
US7156670B2 (en) 2001-01-10 2007-01-02 Newfrey Llc Electrical capped contact stud and method of fastening an electrical contact
CN2549123Y (zh) 2002-06-19 2003-05-07 北京市光环电信设备铸造有限责任公司 井盖弹簧压力锁
JP2004308169A (ja) 2003-04-03 2004-11-04 Nippon Ryosuiki Kogyo Kk 受枠固定構造
US6854922B1 (en) * 2003-07-28 2005-02-15 Santa Clara Valley Transportation Authority, A Public Agency Locking cover for a soffit manhole
JP3740683B2 (ja) * 2003-11-28 2006-02-01 有限会社松本鉄工所 柱脚固定用金具及びそれを用いた柱脚構造
AU2006100511B4 (en) 2005-06-09 2006-09-14 Phillip Hanford Boot Plastic nut, for use with rock bolts
JP2007218297A (ja) * 2006-02-15 2007-08-30 Toto Ltd 破断ナットおよび排水金具
JP2007239428A (ja) 2006-03-03 2007-09-20 Tomotetsu Land:Kk マンホール受枠用浮上り防止金具
AU2006202175B2 (en) 2006-05-23 2012-02-02 Applied Research Of Australia Pty Limited Plastic Rock-Bolt or Dowel
US20080292425A1 (en) 2007-05-17 2008-11-27 Victor Pineiros Threaded insert for receiving a threaded fastener in a composite panel
US8353649B2 (en) * 2007-10-19 2013-01-15 The Monadnock Company Apparatus and methods for securing a fastener
US20090155017A1 (en) 2007-11-16 2009-06-18 Tiodize Co., Inc. Secure composite fastener
KR100949575B1 (ko) * 2009-08-31 2010-03-25 석정건설(주) 높이 조절이 가능한 맨홀덮개장치
DE102010027204A1 (de) * 2010-07-06 2012-01-12 Newfrey Llc Mutter, Befestigungsanordnung und Befestigungsverfahren
US9353779B2 (en) * 2011-11-16 2016-05-31 Ford Global Technologies, Llc Molded encapsulated retainer
DE102012107861A1 (de) 2012-08-27 2014-02-27 Artur Fischer Befestigungsvorrichtung
EP2765317A1 (en) * 2013-02-12 2014-08-13 Solvay Specialty Polymers USA, LLC. Improved fasteners
JP2014173365A (ja) * 2013-03-11 2014-09-22 Emergency:Kk マンホール蓋装置

Also Published As

Publication number Publication date
HUE046906T2 (hu) 2020-03-30
CR20160325A (es) 2016-09-13
IL246495B (en) 2020-04-30
AU2016204289B2 (en) 2017-10-12
US10288106B2 (en) 2019-05-14
US20170023046A1 (en) 2017-01-26
CN106369035B (zh) 2018-11-09
ES2746573T3 (es) 2020-03-06
MX2016008417A (es) 2017-01-19
PH12016000236A1 (en) 2018-01-08
CN106369035A (zh) 2017-02-01
US20170023045A1 (en) 2017-01-26
JP2017025698A (ja) 2017-02-02
CA2932633C (en) 2018-04-10
BR102016015861A2 (pt) 2017-01-24
MY174667A (en) 2020-05-06
SG10201605845YA (en) 2017-02-27
PL3121463T3 (pl) 2020-03-31
SA116370748B1 (ar) 2020-04-17
PT3121463T (pt) 2019-10-25
BR102016015861B1 (pt) 2022-06-21
CA2932633A1 (en) 2017-01-20
DK3121463T3 (da) 2019-10-07
CY1122405T1 (el) 2021-01-27
PE20170593A1 (es) 2017-05-18
CL2016001798A1 (es) 2017-01-20
JP6267283B2 (ja) 2018-01-24
KR20170010716A (ko) 2017-02-01
CU24460B1 (es) 2019-12-03
IL246495A0 (en) 2016-12-29
KR101965479B1 (ko) 2019-04-03
UA117042C2 (uk) 2018-06-11
NZ721968A (en) 2017-03-31
EP3121463A1 (en) 2017-01-25
CU20160116A7 (es) 2018-02-08
AP2016009311A0 (en) 2016-07-31
AU2016204289A1 (en) 2017-02-09
EP3121463B1 (en) 2019-07-10

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