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FR2414966A1 - IC engine exhaust silencer box mfr. - with annular plates fixed by energisation of internal electric coil causing local tube expansion - Google Patents

IC engine exhaust silencer box mfr. - with annular plates fixed by energisation of internal electric coil causing local tube expansion

Info

Publication number
FR2414966A1
FR2414966A1 FR7739220A FR7739220A FR2414966A1 FR 2414966 A1 FR2414966 A1 FR 2414966A1 FR 7739220 A FR7739220 A FR 7739220A FR 7739220 A FR7739220 A FR 7739220A FR 2414966 A1 FR2414966 A1 FR 2414966A1
Authority
FR
Grant status
Application
Patent type
Prior art keywords
tube
annular
coils
inside
plates
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
FR7739220A
Other languages
French (fr)
Other versions
FR2414966B1 (en )
Inventor
Jean-Michel Richard
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.)
Barras Provence SA
Original Assignee
Barras Provence 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

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D26/00Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/14Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces applying magnetic forces
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15Making tubes of special shape; Making tube fittings
    • B21C37/22Making finned or ribbed tubes by fixing strip or like material to tubes
    • B21C37/24Making finned or ribbed tubes by fixing strip or like material to tubes annularly-ribbed tubes

Abstract

High intensity electrical impulses are passed through a coil (4) which is located inside a metal tube (1), the resultant flux causing the tube to expand and wedge onto a surrounding annular plate (2). Several coils may be mounted at longitudinal intervals on a shaft, the dia. being nominally less than the bore of the tube, and their locations corresponding to those of the plates. The process may be adapted to fix annular plates inside the tube, using a hollow shaft with the coils inside and in which the tube is inserted. The coils may be wired in series or in parallel, the circuits (5) being embedded in the shafts which may be of insulating plastic with shock resistant elastic properties.
FR7739220A 1977-12-26 1977-12-26 Expired FR2414966B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7739220A FR2414966B1 (en) 1977-12-26 1977-12-26

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7739220A FR2414966B1 (en) 1977-12-26 1977-12-26

Publications (2)

Publication Number Publication Date
FR2414966A1 true true FR2414966A1 (en) 1979-08-17
FR2414966B1 FR2414966B1 (en) 1982-05-14

Family

ID=9199342

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7739220A Expired FR2414966B1 (en) 1977-12-26 1977-12-26

Country Status (1)

Country Link
FR (1) FR2414966B1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2561322A1 (en) * 1984-03-14 1985-09-20 Metallique Sarl Occ Const Method for assembling two transverse profiled elements to each other and assembly node produced by the implementation of the method
FR2562127A1 (en) * 1984-03-30 1985-10-04 Comabi Sa Method for assembling scaffolding elements
US5619878A (en) * 1994-08-02 1997-04-15 Institut Francais Du Petrole Method and device for manufacturing a corrugated metal pipe

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3196529A (en) * 1962-09-28 1965-07-27 Robert J Schwinghamer Apparatus for securing objects together
US3417456A (en) * 1966-09-30 1968-12-24 Army Usa Method for pulse forming
US3501828A (en) * 1968-08-05 1970-03-24 Gen Motors Corp Method of manufacturing a tie rod assembly
US3528596A (en) * 1966-09-30 1970-09-15 Us Army Apparatus for pulse forming
FR2115027A2 (en) * 1970-11-24 1972-07-07 Chausson Usines Sa

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3196529A (en) * 1962-09-28 1965-07-27 Robert J Schwinghamer Apparatus for securing objects together
US3417456A (en) * 1966-09-30 1968-12-24 Army Usa Method for pulse forming
US3528596A (en) * 1966-09-30 1970-09-15 Us Army Apparatus for pulse forming
US3501828A (en) * 1968-08-05 1970-03-24 Gen Motors Corp Method of manufacturing a tie rod assembly
FR2115027A2 (en) * 1970-11-24 1972-07-07 Chausson Usines Sa

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2561322A1 (en) * 1984-03-14 1985-09-20 Metallique Sarl Occ Const Method for assembling two transverse profiled elements to each other and assembly node produced by the implementation of the method
FR2562127A1 (en) * 1984-03-30 1985-10-04 Comabi Sa Method for assembling scaffolding elements
US5619878A (en) * 1994-08-02 1997-04-15 Institut Francais Du Petrole Method and device for manufacturing a corrugated metal pipe

Also Published As

Publication number Publication date Type
FR2414966B1 (en) 1982-05-14 grant

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Legal Events

Date Code Title Description
ST Notification of lapse