NO139671C - Ekspanderbar muffeform. - Google Patents

Ekspanderbar muffeform.

Info

Publication number
NO139671C
NO139671C NO771336A NO771336A NO139671C NO 139671 C NO139671 C NO 139671C NO 771336 A NO771336 A NO 771336A NO 771336 A NO771336 A NO 771336A NO 139671 C NO139671 C NO 139671C
Authority
NO
Norway
Prior art keywords
expandable sleeve
sleeve form
expandable
sleeve
Prior art date
Application number
NO771336A
Other languages
English (en)
Other versions
NO139671B (no
NO771336L (no
Inventor
Ingvar Stange
Original Assignee
Ingvar Stange
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 Ingvar Stange filed Critical Ingvar Stange
Priority to NO771336A priority Critical patent/NO139671C/no
Priority to US05/890,217 priority patent/US4192704A/en
Publication of NO771336L publication Critical patent/NO771336L/no
Publication of NO139671B publication Critical patent/NO139671B/no
Publication of NO139671C publication Critical patent/NO139671C/no

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/44—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
    • B29C33/48—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles with means for collapsing or disassembling
    • B29C33/485—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles with means for collapsing or disassembling cores or mandrels

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
NO771336A 1977-04-18 1977-04-18 Ekspanderbar muffeform. NO139671C (no)

Priority Applications (2)

Application Number Priority Date Filing Date Title
NO771336A NO139671C (no) 1977-04-18 1977-04-18 Ekspanderbar muffeform.
US05/890,217 US4192704A (en) 1977-04-18 1978-03-27 Expandable muff mould

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO771336A NO139671C (no) 1977-04-18 1977-04-18 Ekspanderbar muffeform.

Publications (3)

Publication Number Publication Date
NO771336L NO771336L (no) 1978-10-19
NO139671B NO139671B (no) 1979-01-15
NO139671C true NO139671C (no) 1979-04-25

Family

ID=19883473

Family Applications (1)

Application Number Title Priority Date Filing Date
NO771336A NO139671C (no) 1977-04-18 1977-04-18 Ekspanderbar muffeform.

Country Status (2)

Country Link
US (1) US4192704A (no)
NO (1) NO139671C (no)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5381995A (en) * 1993-04-06 1995-01-17 Del Zotto; William M. Concrete hole former
US20110062307A1 (en) * 2009-09-14 2011-03-17 The Wiremold Company Pre-pour sleeve system

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1560931A (en) * 1923-04-17 1925-11-10 Concrete Pipe Company Concrete pipe joint, means and method of forming the same
US2747249A (en) * 1952-05-14 1956-05-29 Preload Co Inc Method and apparatus for making prestressed concrete articles
US2699698A (en) * 1954-03-04 1955-01-18 John S Adams Quick-action vise having wedged rollers for locking movable jaw assembly
US3570802A (en) * 1968-10-10 1971-03-16 Hydro Conduit Corp Concrete-molding apparatus having an inner mold member with variable dimension periphery
US3656732A (en) * 1970-10-06 1972-04-18 Hydro Conduit Corp Expandable core for casting concrete pipe
US3815864A (en) * 1972-05-24 1974-06-11 Ameron Inc Elastomeric joint seal

Also Published As

Publication number Publication date
NO139671B (no) 1979-01-15
US4192704A (en) 1980-03-11
NO771336L (no) 1978-10-19

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