CA947151A - Method and apparatus for forming helical ducts - Google Patents

Method and apparatus for forming helical ducts

Info

Publication number
CA947151A
CA947151A CA052,482A CA52482A CA947151A CA 947151 A CA947151 A CA 947151A CA 52482 A CA52482 A CA 52482A CA 947151 A CA947151 A CA 947151A
Authority
CA
Canada
Prior art keywords
forming helical
helical ducts
ducts
forming
helical
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
Application number
CA052,482A
Other versions
CA52482S (en
Inventor
Cecil H. Wood
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.)
Individual
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
Application granted granted Critical
Publication of CA947151A publication Critical patent/CA947151A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture 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
    • B21C37/12—Making tubes or metal hoses with helically arranged seams
    • B21C37/124—Making tubes or metal hoses with helically arranged seams the tubes having a special shape, e.g. with corrugated wall, flexible tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture 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
    • B21C37/12—Making tubes or metal hoses with helically arranged seams
    • B21C37/121—Making tubes or metal hoses with helically arranged seams with non-welded and non-soldered seams
CA052,482A 1968-10-31 1969-05-26 Method and apparatus for forming helical ducts Expired CA947151A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5157368 1968-10-31

Publications (1)

Publication Number Publication Date
CA947151A true CA947151A (en) 1974-05-14

Family

ID=10460541

Family Applications (1)

Application Number Title Priority Date Filing Date
CA052,482A Expired CA947151A (en) 1968-10-31 1969-05-26 Method and apparatus for forming helical ducts

Country Status (2)

Country Link
CA (1) CA947151A (en)
GB (1) GB1301271A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2043867B (en) * 1979-02-27 1983-11-30 Gen Atomic Co Heat transfer tube and method of making same

Also Published As

Publication number Publication date
GB1301271A (en) 1972-12-29

Similar Documents

Publication Publication Date Title
CA931716A (en) Apparatus and method for molding
CA924890A (en) Cartridge and method and apparatus for forming same
CA947151A (en) Method and apparatus for forming helical ducts
AU428693B2 (en) Method and apparatus for making twine
CA704382A (en) Barrel and method and apparatus for making the same
CA778291A (en) Method and apparatus for well control
CA707954A (en) Weft-detecting method and apparatus
AU435964B2 (en) Method and apparatus for producing form-coke
CA793564A (en) Edge-forming apparatus and method
CA711838A (en) Method and apparatus for forming socket-head-cap-screw-blanks
AU4207568A (en) Forming method and apparatus
CA801385A (en) Weft-detecting method and apparatus
AU6567569A (en) Method and apparatus for producing form-coke
CA785190A (en) Extrusion apparatus and method
CA782968A (en) Die and method apparatus for making
CA799742A (en) Method and apparatus for figure reducing
CA778586A (en) Method and apparatus for baking
CA788716A (en) Method and apparatus for forming toothed parts
CA688798A (en) Method and apparatus for producing shaped multilayer bodies
CA780638A (en) Method and apparatus for forming ball studs
CA775398A (en) Die structure and method and apparatus for making the same
AU448496B2 (en) Method and apparatus for moving objects
CA780768A (en) Corrugating method and apparatus
CA786620A (en) Manufacturing method and apparatus
AU409034B2 (en) Method and apparatus for lining hot-tops