US3776031A - Tensile member with tension indicator - Google Patents

Tensile member with tension indicator Download PDF

Info

Publication number
US3776031A
US3776031A US00172019A US3776031DA US3776031A US 3776031 A US3776031 A US 3776031A US 00172019 A US00172019 A US 00172019A US 3776031D A US3776031D A US 3776031DA US 3776031 A US3776031 A US 3776031A
Authority
US
United States
Prior art keywords
stable
resilient
bore
movable
tensile
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 - Lifetime
Application number
US00172019A
Other languages
English (en)
Inventor
J Trigg
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.)
INT ENG CONCESSIONARIES Ltd
Original Assignee
INT ENG CONCESSIONARIES Ltd
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 INT ENG CONCESSIONARIES Ltd filed Critical INT ENG CONCESSIONARIES Ltd
Application granted granted Critical
Publication of US3776031A publication Critical patent/US3776031A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/04—Measuring force or stress, in general by measuring elastic deformation of gauges, e.g. of springs
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/24—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for determining value of torque or twisting moment for tightening a nut or other member which is similarly stressed

Definitions

  • the present invention relates to a tensile member provided with a tension indicator and provides a tensile member having a member moveable relative thereto and towards a stop for the moveable member fixedrelative to a region of the tensile member, and a bi-stable resilient member arranged to be urged by the moveable member to bear against a surface of the tensile member remote from the said region when the moveable member is urged towards the stop, whereby the resilient member becomes distorted, and thereby snaps through from one stable configuration to anotherwhen the distance between the said region and the said surface increases by a given amount as a result of elongation of the tensile member caused by tensioning thereof.
  • the resilient member and moveable member can be so set that when the desired tension is reached, the moveable member can be displaced relative to the said surface sufficiently to distort the resilient member as it bears against the said surface to apoint at which it snaps through.
  • pressure can be applied to urge the moveable member towards the stop and the tensile member can be progressively tensioned.
  • An audible click as the resilient member snaps through indicates that the desired tensioning has been reached.
  • means are provided for resiliently resisting movement of the moveable member towards the stop, and a shoulder is provided on the tensile member spaced from and facing towards the said surface, th moveable member, when movingaway from the stop, pressing the resilient member against the shoulder, whereby when the resilient member has snapped through it will snap back to its original resilience and configuration when pressure on the moveable member is relaxed.
  • This arrangement maintains the resilient member normally in its original resilience and configuration, whereby testing of the tensile member in use, by pressing the moveable member towards the stop, is facilitated, and permits use of the tensile member under water. The tactile sensation as the resilient member reached.
  • the resilient member is kept spaced from the said surface on the tensile member, except when testing or setting is taking place.
  • FIG. 1 shows in section a tensile member in accordance with the invention together with a tool for testing the tensile member
  • FIG. 2 shows in section a portion of the tensile member of FIG. 1 before setting
  • FIGS. 3 and 4 show in section further forms of tensile members in accordance with the invention.
  • FIG. 5 shows in section a portion of the upper end of the tensile member of FIG. 3 of 4 in the course of assembly.
  • the disc spring 4 and pin 3 are so set that when the desired tension is reached the displacement of the pin 3 then possible is sufiicient to distort the spring 4 to a point at which the spring snapsthrough, to the configuration shown in broken lines in FIG. 1.
  • the spring 4 snaps through it gives an audible click, providing an indication that the desired tension has been reached.
  • the pin 3 that exertable byhand is used to press the pin 3 into the bore with sufficient force to dislodge the scroll-pin 22 and push it deeper into the tube 21.
  • the scroll-pin 22 cannot be dislodged and its engagement with the bottom of the bore 2 limits movement of the pin 3.
  • the testing pressure can be applied with a spring-loaded pointed tool 13 illustrated in FIG. 1 which is mounted in a holder 14 with a spring 16 which has a spring rate similar to the spring 8, and which will not become solid before the disc spring 4 snaps through.
  • a dimple can be provided in the outer surface of the button 9 to locate the point of the tool, and the button 9 may be located on the head of the pin 3 by a projection 17 in FIG. 1 which engages a transverse slot 18 in the pin 3.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Clamps And Clips (AREA)
  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
US00172019A 1970-08-19 1971-08-16 Tensile member with tension indicator Expired - Lifetime US3776031A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3999570 1970-08-19

Publications (1)

Publication Number Publication Date
US3776031A true US3776031A (en) 1973-12-04

Family

ID=10412620

Family Applications (1)

Application Number Title Priority Date Filing Date
US00172019A Expired - Lifetime US3776031A (en) 1970-08-19 1971-08-16 Tensile member with tension indicator

Country Status (9)

Country Link
US (1) US3776031A (fr)
AU (1) AU3251371A (fr)
BE (1) BE771426A (fr)
CA (1) CA945833A (fr)
DE (1) DE2141658A1 (fr)
FR (1) FR2104554A5 (fr)
GB (1) GB1352327A (fr)
NL (1) NL7111406A (fr)
ZA (1) ZA715435B (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3908508A (en) * 1974-09-23 1975-09-30 Modulus Corp Strain indicator
US4466477A (en) * 1981-12-21 1984-08-21 Prince Corporation Die casting machine with strain gauge
US4636120A (en) * 1986-06-02 1987-01-13 The Babcock & Wilcox Company Stud/bolt load gauge
US4709654A (en) * 1986-08-15 1987-12-01 Smith Stanley R Indicator for loose lug nuts
US8087860B1 (en) 2008-06-06 2012-01-03 T & N Products, LLC Self-indicating lug nut
US20120160976A1 (en) * 2010-12-23 2012-06-28 Hon Hai Precision Industry Co., Ltd. Mounting apparatus for heat sink and fastening assembly of the mounting apparatus
US20140260652A1 (en) * 2013-03-12 2014-09-18 Kabo Tool Company Threaded member capable of detecting tension
US8906167B2 (en) 2010-04-28 2014-12-09 Whirlpool Corporation Slide assembly for a dishwasher rack
US20170023425A1 (en) * 2014-03-11 2017-01-26 Innovation Plus, Llc System for applying an ultrasonic transducer to a fastener
EP2660576A3 (fr) * 2012-03-08 2018-01-03 Regents of the University of Minnesota Capteur pour la mesure de la tension

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4041776A (en) * 1976-03-22 1977-08-16 Modulus Corporation Strain indicator
DE3137551C2 (de) * 1981-09-22 1984-04-26 ATEC-Weiss KG, 4426 Vreden Schraubenbolzen
GB2151361B (en) * 1983-12-15 1987-12-02 Marconi Electronic Devices Load indicator
DE19723899A1 (de) * 1997-06-08 1998-12-10 Loeffler Thomas Dipl Ing Verfahren und Vorrichtung zum Herstellen von Schraubverbindungen
DE19742310A1 (de) * 1997-09-25 1999-04-01 Peter Prof Dr Ing Tenberge Befestigungssystem für Schrauben
CN107989878A (zh) * 2017-11-29 2018-05-04 中国航空工业集团公司济南特种结构研究所 一种自回弹紧固件

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1767709A (en) * 1922-07-20 1930-06-24 Tremont Products Corp Electric switch
US2434984A (en) * 1943-06-17 1948-01-27 Metals & Controls Corp Thermostatic control
US2850937A (en) * 1955-04-28 1958-09-09 Eldon K Ralston Snap type bolt tension indicator
US2995033A (en) * 1960-01-14 1961-08-08 Holo Krome Screw Corp Apparatus for tensioning threaded members
US3248923A (en) * 1962-12-26 1966-05-03 Richard H Blakeley Method of calibrating tension indicating bolt
US3561260A (en) * 1969-05-06 1971-02-09 Cooper Ind Inc Method of measuring tension in a fastener
US3589234A (en) * 1968-05-28 1971-06-29 Jack Victor Haig Trigg Tensile member

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1767709A (en) * 1922-07-20 1930-06-24 Tremont Products Corp Electric switch
US2434984A (en) * 1943-06-17 1948-01-27 Metals & Controls Corp Thermostatic control
US2850937A (en) * 1955-04-28 1958-09-09 Eldon K Ralston Snap type bolt tension indicator
US2995033A (en) * 1960-01-14 1961-08-08 Holo Krome Screw Corp Apparatus for tensioning threaded members
US3248923A (en) * 1962-12-26 1966-05-03 Richard H Blakeley Method of calibrating tension indicating bolt
US3589234A (en) * 1968-05-28 1971-06-29 Jack Victor Haig Trigg Tensile member
US3561260A (en) * 1969-05-06 1971-02-09 Cooper Ind Inc Method of measuring tension in a fastener

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3908508A (en) * 1974-09-23 1975-09-30 Modulus Corp Strain indicator
US4466477A (en) * 1981-12-21 1984-08-21 Prince Corporation Die casting machine with strain gauge
US4636120A (en) * 1986-06-02 1987-01-13 The Babcock & Wilcox Company Stud/bolt load gauge
US4709654A (en) * 1986-08-15 1987-12-01 Smith Stanley R Indicator for loose lug nuts
US8087860B1 (en) 2008-06-06 2012-01-03 T & N Products, LLC Self-indicating lug nut
US8906167B2 (en) 2010-04-28 2014-12-09 Whirlpool Corporation Slide assembly for a dishwasher rack
US8348570B2 (en) * 2010-12-23 2013-01-08 Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. Mounting apparatus for heat sink and fastening assembly of the mounting apparatus
US20120160976A1 (en) * 2010-12-23 2012-06-28 Hon Hai Precision Industry Co., Ltd. Mounting apparatus for heat sink and fastening assembly of the mounting apparatus
EP2660576A3 (fr) * 2012-03-08 2018-01-03 Regents of the University of Minnesota Capteur pour la mesure de la tension
US20140260652A1 (en) * 2013-03-12 2014-09-18 Kabo Tool Company Threaded member capable of detecting tension
US9046433B2 (en) * 2013-03-12 2015-06-02 Kabo Tool Company Threaded member capable of detecting tension
US20170023425A1 (en) * 2014-03-11 2017-01-26 Innovation Plus, Llc System for applying an ultrasonic transducer to a fastener
US10088378B2 (en) * 2014-03-11 2018-10-02 Innovation Plus, Llc System for applying an ultrasonic transducer to a fastener

Also Published As

Publication number Publication date
AU3251371A (en) 1973-02-22
NL7111406A (fr) 1972-02-22
CA945833A (en) 1974-04-23
ZA715435B (en) 1972-05-31
GB1352327A (en) 1974-05-08
DE2141658A1 (de) 1972-02-24
FR2104554A5 (fr) 1972-04-14
BE771426A (fr) 1971-12-31

Similar Documents

Publication Publication Date Title
US3776031A (en) Tensile member with tension indicator
US4783624A (en) Contact probe devices and method
JPS5926343B2 (ja) ピペツト
US3589234A (en) Tensile member
US3227030A (en) Spring pin
KR101097111B1 (ko) 양단 접촉 프루브
JP3167704B2 (ja) 押しボタン
US2177232A (en) Tool
DE2729064C2 (de) Symmetrische flache Kraftmeßzelle
EP3051550B1 (fr) Bouton-poussoir en forme de coeur à blocage automatique
US2465654A (en) Electric switch construction
US2576673A (en) Fluid seal
US3106759A (en) New and improved fastening means
US3878347A (en) Electrical switch
US3234776A (en) Crimping device
US3922098A (en) Mechanical pencil
US4124791A (en) Electrical switch
US4152889A (en) Push button device for watch casing
US3880530A (en) Writing utensil
US2697375A (en) Stressed blind fastener
US2953950A (en) Boring bar
US4436969A (en) Timing device for time switch
JPS6159404B2 (fr)
US2839629A (en) Switch or the like
CN217078832U (zh) 一种管道检查井防沉降装置