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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0229022 (1988-08-05) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 32 인용 특허 : 0 |
A device for cleaning pipe or tubing and fittings is disclosed consisting of an internal brush for cleaning of fittings and an external brush for cleaning of tube or pipe prior to soldering or brazing. Both brushes are provided in a single tool so that either tube or fitting can be cleaned without c
A device for abrading tube and fittings preparatory to soldering or brazing which consists of a cuplike shell having a square drive socket on its closed end; an outer brush of hard, drawn wire attached to a sleeve which is bonded to the shell; an inner brush also of hard drawn wire which is attached
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