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|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||220/359 ; 220/613|
|우선권정보||JP-0085442 U (1990-08-14); JP-0094736 U (1990-09-11); JP-0105196 U (1990-10-08)|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 32 인용 특허 : 0|
A plastic case and a method for producing a plastic case composed of two halves ultrasonically welded together without problems caused by the generation of excess material, namely, excess melted resin and resin particles, produced during the welding process. The welding is effected at abutting portions of a projection formed on one of the two case halves and a recess formed on the other. A gap is left between the end surface of the distalface of the projection and the bottom of the recess defining an internal space. At least one air hole is formed commun...
A plastic case comprising: a first half case; a projection formed on said first half case; and a second half case having a recess formed thereon, wherein said first half case and said second half case are joined by ultrasonically welding said projection formed on said first half case with said recess formed on second half case, said recess having a diameter slightly smaller than a diameter of said projection so that said projection must be forcibly inserted into said recess, a gap being formed between the bottom of said recess and a distal end face of sa...