AU2009101070A4 - Half internal thread - Google Patents

Half internal thread Download PDF

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Publication number
AU2009101070A4
AU2009101070A4 AU2009101070A AU2009101070A AU2009101070A4 AU 2009101070 A4 AU2009101070 A4 AU 2009101070A4 AU 2009101070 A AU2009101070 A AU 2009101070A AU 2009101070 A AU2009101070 A AU 2009101070A AU 2009101070 A4 AU2009101070 A4 AU 2009101070A4
Authority
AU
Australia
Prior art keywords
internal thread
half internal
mould
thread
product
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.)
Ceased
Application number
AU2009101070A
Inventor
Douglas Arthur Cooper
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
Priority to AU2009101070A priority Critical patent/AU2009101070A4/en
Application granted granted Critical
Publication of AU2009101070A4 publication Critical patent/AU2009101070A4/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25G—HANDLES FOR HAND IMPLEMENTS
    • B25G3/00—Attaching handles to the implements
    • B25G3/02—Socket, tang, or like fixings
    • B25G3/12—Locking and securing devices
    • B25G3/30—Locking and securing devices comprising screwed sockets or tangs
    • 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
    • B29C45/2628—Moulds with mould parts forming holes in or through the moulded article, e.g. for bearing cages
    • 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
    • B29C33/76—Cores
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Description

C,! AUSTRALIA Patents Act 1990 COMPLETE SPECIFICATION INNOVATION PATENT HALF INTERNAL THREAD The following statement is a full description of this invention, including the best method of performing it known to me.
1 HALF INTERNAL THREAD The invention is related to Plastic Manufacturing Industry. The reason for this invention is to overcome problems of wooden handles varying in size, i.e. pole diameter and not fitting aperture provided in products such as brooms or rakes etc., therefore these products require an internal thread. 5 The conventional method in industry of creating an internal thread in products is to rotate a core with the thread on it, out of the plastic product that has been produced in the mould. This is a complex and costly method. 10 The optimum method in plastic mould design is known as open and shut operation which allows the product to simply drop out when mould opens and not having to wait for unscrewing mechanisms to work. This invention offers half internal thread with open and shut design. 15 The invention may be better understood with reference to the illustrations of embodiments of the invention whereby Fig. 1 is an end elevation of the product. Fig. 2 is a plan view of the product. 20 Fig. 3 is end sectional view of the mould parts. Fig. 4 is section through sliding core of the mould parts. In Fig. 1 depicts 6 as angular plastic wall thickness and 5 the spiral internal threads shown shaded. 25 In Fig. 2 depicts aperture 7 within the wall thickness 6 (Fig. 1), 8 depicts spiral threads adjoined to 7. In Fig. 3 mould diagram 9 is two mould inserts. 10 cross section through sliding core 30 shown shaded, also shows the sliding core to shutting off (fitting tightly) with insert 9. In Fig. 4 mould diagram 11 cross section sliding core, 12 is section through mould inserts with spiral thread shapes on them. Inserts 12 must shut off (fit tightly) with core 11. 35 Summarising : The mould opens apart, the core retracts out of the product and product is left with 12 half internal threads.

Claims (4)

1. The disclosed half internal thread consists of fifty percent effective internal thread and may be varied to a greater or lessor degree, angular wise.
2. A half internal thread claimed in claim 1 wherein can be used in moulds which have internal thread required to be 900 from split line (main parting faces).
3. A half internal thread in accordance with claim 1 and 2 wherein the product is made of plastic and the 3 parts required in the mould of appropriate steel. The enable the production of any numerous thread types and sizes.
4 A half internal thread can substantially as herein before described with reference to Figures 1 - 4 of the accompanying drawings. DOUGLAS ARTHUR COOPER 21 OCTOBER 2009
AU2009101070A 2009-10-23 2009-10-23 Half internal thread Ceased AU2009101070A4 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2009101070A AU2009101070A4 (en) 2009-10-23 2009-10-23 Half internal thread

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU2009101070A AU2009101070A4 (en) 2009-10-23 2009-10-23 Half internal thread

Publications (1)

Publication Number Publication Date
AU2009101070A4 true AU2009101070A4 (en) 2009-12-03

Family

ID=41382270

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2009101070A Ceased AU2009101070A4 (en) 2009-10-23 2009-10-23 Half internal thread

Country Status (1)

Country Link
AU (1) AU2009101070A4 (en)

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Legal Events

Date Code Title Description
FGI Letters patent sealed or granted (innovation patent)
MK22 Patent ceased section 143a(d), or expired - non payment of renewal fee or expiry