CA2015474A1 - Stiffness tester - Google Patents

Stiffness tester

Info

Publication number
CA2015474A1
CA2015474A1 CA 2015474 CA2015474A CA2015474A1 CA 2015474 A1 CA2015474 A1 CA 2015474A1 CA 2015474 CA2015474 CA 2015474 CA 2015474 A CA2015474 A CA 2015474A CA 2015474 A1 CA2015474 A1 CA 2015474A1
Authority
CA
Canada
Prior art keywords
bars
envelope
weight
reaction
fixed support
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 2015474
Other languages
French (fr)
Other versions
CA2015474C (en
Inventor
Claude Sautejeau
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.)
LA POSTE
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
Publication of CA2015474A1 publication Critical patent/CA2015474A1/en
Application granted granted Critical
Publication of CA2015474C publication Critical patent/CA2015474C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/20—Investigating strength properties of solid materials by application of mechanical stress by applying steady bending forces

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)

Abstract

Appareil de contrôle de la rigidité d'un objet plat, en particulier du genre enveloppe de courrier ou analogue.
Selon l'invention, cet appareil se caractérise en ce qu'il comporte un appui fixe pour une enveloppe à contrôler, constitué d'une pluralité de supports et de préférence de trois barres (2, 3, 4), équidistantes, parallèles et disposées dans un plan horizontal, ces barres délimitant deux à deux, deux zones voisines de l'enveloppe (B) de même dimension transversale, un poids mobile (5) de masse étalonnée, comprenant deux barres de réaction (7), également parallèles entre elles et aux barres d'appui fixes et disposées au-dessus de l'enveloppe, sensiblement au milieu des zones délimitées par ces barres d'appui, des moyens (9, 11, 12) pour successivement immobiliser le poids dans une position relevée où ses deux barres ne sont pas en contact avec l'enveloppe alors librement introduite entre les barres respectivement d'appui fixes et du poids mobile puis pour le libérer de telle sorts qu'il s'appuie sur l'enveloppe par ses deux barres de réaction, et enfin pour ramener le poids en position initiale, des moyens (14, 15) pour mesurer le déplacement relatif par rapport à un repère fixe, et dés moyens pour faire déplacer l'enveloppe entre les barres d'appui fixes et les barres de réaction du poids mobile. Apparatus for checking the rigidity of a flat object, in particular of the like mail envelope or the like.
According to the invention, this device is characterized in that it comprises a fixed support for an envelope to be checked, consisting of a plurality of supports and preferably three bars (2, 3, 4), equidistant, parallel and arranged in a horizontal plane, these bars delimiting two by two, two neighboring zones of the envelope (B) of the same dimension transverse, a mobile weight (5) of calibrated mass, comprising two reaction bars (7), also parallel to each other and to the bars fixed support and arranged above the envelope, substantially at middle of the areas delimited by these grab bars, means (9, 11, 12) to successively immobilize the weight in a raised position where its two bars are not in contact with the envelope then freely inserted between the fixed support bars respectively moving weight then to release it from such spells that it relies on the envelope by its two reaction bars, and finally to bring the weight in initial position, means (14, 15) for measuring the relative displacement with respect to a fixed reference, and means for move the envelope between the fixed grab bars and the bars moving weight reaction.

CA 2015474 1989-04-28 1990-04-26 Stiffness tester Expired - Fee Related CA2015474C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8905723A FR2646509B1 (en) 1989-04-28 1989-04-28 RIGIDIMETER
FR8905723 1989-04-28

Publications (2)

Publication Number Publication Date
CA2015474A1 true CA2015474A1 (en) 1990-10-28
CA2015474C CA2015474C (en) 2000-06-27

Family

ID=9381281

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2015474 Expired - Fee Related CA2015474C (en) 1989-04-28 1990-04-26 Stiffness tester

Country Status (4)

Country Link
EP (1) EP0395517B1 (en)
CA (1) CA2015474C (en)
DE (1) DE69000164T2 (en)
FR (1) FR2646509B1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007034070B3 (en) * 2007-07-20 2008-11-20 Siemens Ag Rigidity verification device for e.g. flat letter, has drive for moving postal items, relative to force exertion device, which has blower that designed to exert force on items by production of flow of liquid on movable areas of items
GB2494177A (en) * 2011-09-02 2013-03-06 Univ Loughborough Determining interlaminar shear mechanical properties of composite laminates
CN111198127A (en) * 2020-02-12 2020-05-26 中铁六局集团有限公司 Experimental top of coarse aggregate hits auxiliary device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3158021A (en) * 1961-02-06 1964-11-24 Western Pine Ass Lumber testing apparatus
BE655821A (en) * 1963-11-15
US3368394A (en) * 1965-09-23 1968-02-13 Burroughs Corp Paper stiffness tester
JPS56111444A (en) * 1980-02-08 1981-09-03 Tokyo Tungsten Co Ltd Method and device for inspecting linear material of super alloy

Also Published As

Publication number Publication date
CA2015474C (en) 2000-06-27
EP0395517B1 (en) 1992-06-24
DE69000164D1 (en) 1992-07-30
FR2646509B1 (en) 1991-07-26
DE69000164T2 (en) 1993-02-11
EP0395517A1 (en) 1990-10-31
FR2646509A1 (en) 1990-11-02

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed