US20020002082A1 - Plastic pin - Google Patents

Plastic pin Download PDF

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Publication number
US20020002082A1
US20020002082A1 US09/837,623 US83762301A US2002002082A1 US 20020002082 A1 US20020002082 A1 US 20020002082A1 US 83762301 A US83762301 A US 83762301A US 2002002082 A1 US2002002082 A1 US 2002002082A1
Authority
US
United States
Prior art keywords
base
plug
shell
pin
pin according
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.)
Abandoned
Application number
US09/837,623
Other languages
English (en)
Inventor
Arnold Jager
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
Publication of US20020002082A1 publication Critical patent/US20020002082A1/en
Abandoned legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63D—BOWLING GAMES, e.g. SKITTLES, BOCCE OR BOWLS; INSTALLATIONS THEREFOR; BAGATELLE OR SIMILAR GAMES; BILLIARDS
    • A63D9/00—Pins

Definitions

  • the present invention relates to a plastic pin, i.e. one of polymeric material, for games, and has a porous and/or cellular core that is surrounded by a tough or resilient shell.
  • the pin has a base that forms a support surface and that is made of a different material than is the shell.
  • the base has a central bore and a plug or socket that proceeds from the rim of the bore and extends into the core of the pin.
  • plastic pins for bowling lanes include so-called bowling pins and nine pins.
  • FIG. 1 is a plan view of one exemplary embodiment of an inventive pin
  • FIG. 2 is a partially cross-sectioned view of the lower portion of the pin of FIG. 1;
  • FIG. 3 is a cross-sectional view of a modification of the pin of FIG. 2, whereby the right and left portions of FIG. 3 show different embodiments.
  • the aforementioned anchoring can be very easily realized pursuant to the present invention.
  • the plug that extends into the interior of the pin is provided with the aforementioned projections, and if the material that forms the cellular and/or porous plastic core is introduced into the hollow interior of the pin from below through the plug during manufacture of the pin, the material of the core advances downwardly during introduction thereof to the inner side of the base, whereby such material surrounds the plug on all sides and thereby completes the positive connection.
  • the pin of FIG. 1 is provided in the customary manner in the base region with a base 1 , thereabove a barrel or bulging portion 2 , which merges into a reduced-diameter neck 3 , and finally a head 4 that has a smaller outer diameter than does the barrel 2 .
  • the components 2 , 3 and 4 form the shell 5 of the pin.
  • the pin is additionally provided with a core 6 that is preferably adhered or secured to the outside.
  • the core 6 comprises a cellular and/or porous polymeric material and, after completion of the outer casing (the base 1 and the shell 5 ), is formed by introducing an expanding material into the interior of this casing through the central bore 7 in the base 1 .
  • the shell 5 is comprised of a polymeric material based on polypropylenes
  • the base 1 is made of a generally harder polymeric material based on polyamide. Although these materials are suitable, they do not always form an adequately strong bond with one another.
  • a socket or plug 8 extends perpendicularly upwardly, i.e. into the interior of the pin, for example having a length of about 40-80 mm.
  • the important feature is that the outer surface of the plug 8 , which is monolithically formed with the base 1 , is provided with a plurality of annular projections 9 that are distributed over the height of the plug 8 .
  • the annular projections 9 preferably have a saw toothed cross-sectional configuration, and in particular such that the larger diameter portion of the projections 9 face the base 1 , thus creating corresponding undercuts.
  • the base 1 can be laterally provided with a rim or flange 12 (shown by dashed lines) that centers the components 1 and 5 relative to one another.
  • an adhesive can be effective in the region of the separating faces between the shell 5 and the base 1 .
  • the connection of these components is often adequately ensured by the aforementioned positive connection.
  • the base 1 is provided with an upwardly widening plug 8 , in other words, a plug that has an essentially conical exterior surface (the diameter D is greater than the diameter d).
  • This plug 8 also results in a positive connection, i.e. forms a back taper or undercut for the material of the core.
  • a hook connection can also be provided between the shell 5 and an upwardly extending rim 13 of the base 1 .
  • the shell 5 can engage in an inwardly disposed circumferential groove 14 of the rim 13 (as shown in the left half of FIG. 3), or the shell 5 can engage in an outwardly disposed circumferential groove 15 of the rim 13 (as shown in the right half of FIG. 3).

Landscapes

  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
  • Closures For Containers (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
US09/837,623 2000-04-17 2001-04-17 Plastic pin Abandoned US20020002082A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEDE10018917.2 2000-04-17
DE10018917A DE10018917A1 (de) 2000-04-17 2000-04-17 Kunststoffkegel

Publications (1)

Publication Number Publication Date
US20020002082A1 true US20020002082A1 (en) 2002-01-03

Family

ID=7638998

Family Applications (1)

Application Number Title Priority Date Filing Date
US09/837,623 Abandoned US20020002082A1 (en) 2000-04-17 2001-04-17 Plastic pin

Country Status (4)

Country Link
US (1) US20020002082A1 (de)
EP (1) EP1147792A3 (de)
JP (1) JP2001346931A (de)
DE (1) DE10018917A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150138520A1 (en) * 2003-11-24 2015-05-21 Asml Netherlands B. V. Holding Device for an Optical Element in an Objective

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH436075A (de) * 1966-01-12 1967-05-15 Seranina Ag Patentverwert Kunststoff-Kegel für Kegelbahnen
DE4420324B4 (de) * 1994-06-13 2004-02-26 Jäger, Arnold Kunststoffkegel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150138520A1 (en) * 2003-11-24 2015-05-21 Asml Netherlands B. V. Holding Device for an Optical Element in an Objective

Also Published As

Publication number Publication date
JP2001346931A (ja) 2001-12-18
EP1147792A2 (de) 2001-10-24
DE10018917A1 (de) 2001-10-18
EP1147792A3 (de) 2002-12-04

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Legal Events

Date Code Title Description
STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION