FR2403480A1 - Spacer for bolted assemblies - has cylindrical end surfaces which permit degree of angular freedom and prevents fretting - Google Patents

Spacer for bolted assemblies - has cylindrical end surfaces which permit degree of angular freedom and prevents fretting

Info

Publication number
FR2403480A1
FR2403480A1 FR7727727A FR7727727A FR2403480A1 FR 2403480 A1 FR2403480 A1 FR 2403480A1 FR 7727727 A FR7727727 A FR 7727727A FR 7727727 A FR7727727 A FR 7727727A FR 2403480 A1 FR2403480 A1 FR 2403480A1
Authority
FR
France
Prior art keywords
spacer
end surfaces
bolt
cylindrical end
degree
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
FR7727727A
Other languages
French (fr)
Other versions
FR2403480B1 (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.)
Aerowatt SA
Original Assignee
Aerowatt SA
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 Aerowatt SA filed Critical Aerowatt SA
Priority to FR7727727A priority Critical patent/FR2403480A1/en
Publication of FR2403480A1 publication Critical patent/FR2403480A1/en
Application granted granted Critical
Publication of FR2403480B1 publication Critical patent/FR2403480B1/fr
Granted 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
    • F16B43/00—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts
    • F16B43/02—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts with special provisions for engaging surfaces which are not perpendicular to a bolt axis or do not surround the bolt

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
  • Mounting Of Bearings Or Others (AREA)

Abstract

The bolted assemblies are seldom perfectly rigid and consequently fretting occurs between the head of the bolt and the surface of the bolted component. In addition bending moments are imposed on the bolt causing an increase in stress. A method of eliminating this disadvantage uses a spacer (4) under the head (3) of the bolt (2). The spacer (4) has a tapered bore (10) and cylindrical end surfaces (8, 9). The centre lines of curvature of these end surfaces are mutually perpendicular. The spacer allows a limited degree of angular freedom for the bolt (2) and so prevents fretting.
FR7727727A 1977-09-14 1977-09-14 Spacer for bolted assemblies - has cylindrical end surfaces which permit degree of angular freedom and prevents fretting Granted FR2403480A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7727727A FR2403480A1 (en) 1977-09-14 1977-09-14 Spacer for bolted assemblies - has cylindrical end surfaces which permit degree of angular freedom and prevents fretting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7727727A FR2403480A1 (en) 1977-09-14 1977-09-14 Spacer for bolted assemblies - has cylindrical end surfaces which permit degree of angular freedom and prevents fretting

Publications (2)

Publication Number Publication Date
FR2403480A1 true FR2403480A1 (en) 1979-04-13
FR2403480B1 FR2403480B1 (en) 1981-12-18

Family

ID=9195379

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7727727A Granted FR2403480A1 (en) 1977-09-14 1977-09-14 Spacer for bolted assemblies - has cylindrical end surfaces which permit degree of angular freedom and prevents fretting

Country Status (1)

Country Link
FR (1) FR2403480A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4651662A (en) * 1985-12-23 1987-03-24 Ssmc Inc. Sewing machine frame cover and fastening therefor
EP0947806A1 (en) * 1998-03-31 1999-10-06 Sony Precision Technology Inc. Position detection apparatus

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1345358A (en) * 1919-06-02 1920-07-06 Fuller Silas Stillman Clamping device
FR1193489A (en) * 1958-03-21 1959-11-03 variable tightening angle nut
FR1209949A (en) * 1958-05-02 1960-03-04 Stup Procedes Freyssinet Improvements to methods and anchoring devices for prestressing bars
FR1547671A (en) * 1967-10-17 1968-11-29 Michelin & Cie Improvements to vehicle wheel attachments
FR1556381A (en) * 1967-12-29 1969-02-07
US3438300A (en) * 1967-08-17 1969-04-15 Butler Manufacturing Co Brace rod washer
GB1183683A (en) * 1967-08-10 1970-03-11 Torque Tension Bolt Company Pr Anchor Bolt Assemblies.
FR2239906A5 (en) * 1973-08-03 1975-02-28 Potier Claude Fixing device for retaining wall tie rod - washer plates pivot about interengaging rods on their surfaces

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1345358A (en) * 1919-06-02 1920-07-06 Fuller Silas Stillman Clamping device
FR1193489A (en) * 1958-03-21 1959-11-03 variable tightening angle nut
FR1209949A (en) * 1958-05-02 1960-03-04 Stup Procedes Freyssinet Improvements to methods and anchoring devices for prestressing bars
GB1183683A (en) * 1967-08-10 1970-03-11 Torque Tension Bolt Company Pr Anchor Bolt Assemblies.
US3438300A (en) * 1967-08-17 1969-04-15 Butler Manufacturing Co Brace rod washer
FR1547671A (en) * 1967-10-17 1968-11-29 Michelin & Cie Improvements to vehicle wheel attachments
FR1556381A (en) * 1967-12-29 1969-02-07
FR2239906A5 (en) * 1973-08-03 1975-02-28 Potier Claude Fixing device for retaining wall tie rod - washer plates pivot about interengaging rods on their surfaces

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4651662A (en) * 1985-12-23 1987-03-24 Ssmc Inc. Sewing machine frame cover and fastening therefor
EP0947806A1 (en) * 1998-03-31 1999-10-06 Sony Precision Technology Inc. Position detection apparatus
US6145213A (en) * 1998-03-31 2000-11-14 Sony Precision Technology Inc. Position detection apparatus

Also Published As

Publication number Publication date
FR2403480B1 (en) 1981-12-18

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse