|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||425/342 ; 249/122 ; 249/161 ; 425/812|
|발명자 / 주소|
|인용정보||피인용 횟수 : 1 인용 특허 : 5|
A mold for making annular polymeric articles comprising a core having an outer contoured surface for placing a workpiece thereon, two half-molds with holes for discharging excess polymer embracing the contoured surface of the core and partially embracing end faces of the core in the course of radial displacement of the half-molds during press-forming of the article, and a means for pressure-sealing a forming cavity of the mold. The half-molds have in the area where they are joined a width equal to the length of the generating line of the core, whereas th...
A mold for making annular polymeric articles comprising: a core having an outer cylindrical contoured surface for placing a workpiece thereon; two half-molds adjacent each other and capable of radial movement; said half-molds embracing the outer cylindrical contoured surface and partially embracing end faces of said core defining a mold cavity therebetween during their radial displacement in the course of press-forming of the article and mutually abuttable along a joint; a means for radially displacing said half-molds; said half-molds having at the joint...