GB2311749B - Inner gear formed by injection molding and a mold therefor - Google Patents

Inner gear formed by injection molding and a mold therefor

Info

Publication number
GB2311749B
GB2311749B GB9713563A GB9713563A GB2311749B GB 2311749 B GB2311749 B GB 2311749B GB 9713563 A GB9713563 A GB 9713563A GB 9713563 A GB9713563 A GB 9713563A GB 2311749 B GB2311749 B GB 2311749B
Authority
GB
United Kingdom
Prior art keywords
injection molding
inner gear
gear formed
mold therefor
therefor
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 - Fee Related
Application number
GB9713563A
Other versions
GB9713563D0 (en
GB2311749A (en
Inventor
Hiroshi Nomura
Takamitsu Sasaki
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.)
Pentax Corp
Original Assignee
Asahi Kogaku Kogyo Co Ltd
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
Priority claimed from JP32048193A external-priority patent/JP3340543B2/en
Priority claimed from JP2163294A external-priority patent/JPH07227886A/en
Priority claimed from JP3266394A external-priority patent/JP3490758B2/en
Priority claimed from JP3266494A external-priority patent/JPH07243512A/en
Application filed by Asahi Kogaku Kogyo Co Ltd filed Critical Asahi Kogaku Kogyo Co Ltd
Priority claimed from GB9425753A external-priority patent/GB2285599B/en
Publication of GB9713563D0 publication Critical patent/GB9713563D0/en
Publication of GB2311749A publication Critical patent/GB2311749A/en
Application granted granted Critical
Publication of GB2311749B publication Critical patent/GB2311749B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
    • G02B7/10—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/2618—Moulds having screw-threaded mould walls
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/2681—Moulds with rotatable mould parts
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/40—Removing or ejecting moulded articles
    • B29C45/44—Removing or ejecting moulded articles for undercut articles
    • B29C45/4421—Removing or ejecting moulded articles for undercut articles using expansible or collapsible cores

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
GB9713563A 1993-12-20 1994-12-20 Inner gear formed by injection molding and a mold therefor Expired - Fee Related GB2311749B (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP32048193A JP3340543B2 (en) 1993-12-20 1993-12-20 Cylindrical molded body, mold for cylindrical molded body, and method of manufacturing the same
JP2163294A JPH07227886A (en) 1994-02-18 1994-02-18 Injection mold equipped with inner slide core
JP3266394A JP3490758B2 (en) 1994-03-02 1994-03-02 Internal gear and its injection mold
JP3266494A JPH07243512A (en) 1994-03-02 1994-03-02 Internal gear
GB9425753A GB2285599B (en) 1993-12-20 1994-12-20 Cylindrical product with inner gear, method of manufacturing and molds therefor

Publications (3)

Publication Number Publication Date
GB9713563D0 GB9713563D0 (en) 1997-09-03
GB2311749A GB2311749A (en) 1997-10-08
GB2311749B true GB2311749B (en) 1998-04-22

Family

ID=27517272

Family Applications (3)

Application Number Title Priority Date Filing Date
GB9713567A Expired - Fee Related GB2311751B (en) 1993-12-20 1994-12-20 Inner gear formed by a mold for injection molding
GB9713564A Expired - Fee Related GB2311750B (en) 1993-12-20 1994-12-20 Injection molding inner gear mold
GB9713563A Expired - Fee Related GB2311749B (en) 1993-12-20 1994-12-20 Inner gear formed by injection molding and a mold therefor

Family Applications Before (2)

Application Number Title Priority Date Filing Date
GB9713567A Expired - Fee Related GB2311751B (en) 1993-12-20 1994-12-20 Inner gear formed by a mold for injection molding
GB9713564A Expired - Fee Related GB2311750B (en) 1993-12-20 1994-12-20 Injection molding inner gear mold

Country Status (1)

Country Link
GB (3) GB2311751B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4622696B2 (en) * 2005-06-20 2011-02-02 株式会社ニコン Cam drive mechanism

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB757338A (en) * 1952-08-22 1956-09-19 Elastic Stop Nut Corp Improvements in or relating to catadioptric lenses
GB947366A (en) * 1960-12-05 1964-01-22 Beckman Instruments Inc Potentiometer housing and method of constructing same
GB1134777A (en) * 1966-04-19 1968-11-27 Schneider Co Optische Werke Optical objectives having axially movable components
GB1592207A (en) * 1977-10-24 1981-07-01 Geyer Werkzeugbau Gmbh & Co Kg Collapsible cores for the manufacture of moulded components

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB560414A (en) * 1942-10-26 1944-04-04 Barnett Levy Improvements in or relating to expansible mandrels or formers for use, for example, in moulding leather tyres
DE7519907U (en) * 1975-06-23 1976-04-15 Duevel, Wilhelm, 4904 Enger MOLDING APPARATUS FOR PLASTIC PIPES
JPS56118833A (en) * 1980-02-26 1981-09-18 Toshiba Mach Co Ltd Mold for forming
IT1133374B (en) * 1980-11-14 1986-07-09 Sica Spa MECHANICAL EXPANSION BUFFER FOR THE INTERNAL CALIBRATION OF PLASTIC TUBES IN GENERAL, IN PARTICULAR FOR THE REALIZATION OF SEATS FOR GASKETS

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB757338A (en) * 1952-08-22 1956-09-19 Elastic Stop Nut Corp Improvements in or relating to catadioptric lenses
GB947366A (en) * 1960-12-05 1964-01-22 Beckman Instruments Inc Potentiometer housing and method of constructing same
GB1134777A (en) * 1966-04-19 1968-11-27 Schneider Co Optische Werke Optical objectives having axially movable components
GB1592207A (en) * 1977-10-24 1981-07-01 Geyer Werkzeugbau Gmbh & Co Kg Collapsible cores for the manufacture of moulded components

Also Published As

Publication number Publication date
GB9713563D0 (en) 1997-09-03
GB2311749A (en) 1997-10-08
GB9713564D0 (en) 1997-09-03
GB9713567D0 (en) 1997-09-03
GB2311750A (en) 1997-10-08
GB2311750B (en) 1998-04-22
GB2311751B (en) 1998-04-22
GB2311751A (en) 1997-10-08

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20061220