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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0252195 (1988-09-30) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 7 인용 특허 : 2 |
A small and compact vacuum-pressure pump which serves as a portable vacuum-pressure source is disclosed. The pump includes a cylinder coupled with one handle and a piston therein coupled with another handle. A valving means with a rotatable in a cylinder allows either a vacuum or pressure to be crea
An adapter for converting a hand-held vacuum pump to be convertible between either a vacuum pump or a pressure pump, said vacuum pump having: (a) cylinder means and having an inlet opening and an outlet opening, (b) biased piston means for creating a pressure differential and for drawing air through
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