[특허]Ring tube x-ray source with active vacuum pumping

Ring tube x-ray source with active vacuum pumping 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H01J-035/04
출원번호	US-0163148 (1993-12-06)
발명자 / 주소	Burke James E. (Villa Park IL) Miller Lester (Forest Park IL)
출원인 / 주소	Picker International, Inc. (Highland Hts. OH 02)
인용정보	피인용 횟수 : 27 인용 특허 : 0

초록 ▼

A toroidal x-ray tube housing (A) is composed of multiple sections which are clamped together and sealed by elastomeric gaskets (128). An annular anode (B) is mounted to the housing with coolant passages (12, 14) extending thereadjacent. A rotor (30) is rotated within the toroidal housing by a motor (60). At least one cathode assembly (C) is mounted to the rotor adjacent the anode. The rotor is supported by magnetic bearings (40) whose active coils are separated from the vacuum region by a magnetic window (48). Alternately, a series of vanes (136, 138) are provided to divide the vacuum chamber into a high vacuum region (132) adjacent the cathode and anode and a low vacuum region (134) adjacent the motor (60) and bearings (40, 150, 152) for rotatably supporting the rotor within the housing. An active vacuum pump, preferably a ion pump (112) and a getter (114) are hermetically sealed into the vacuum region for maintaining the vacuum.

대표청구항 ▼

An x-ray tube comprising: a generally toroidal housing having an evacuated interior; an annular anode surface mounted in the toroidal housing interior, the anode surface being in thermal communication with a circulated cooling fluid passage such that the cooling fluid removes heat from the anode surface; an annular rotor rotatably disposed within the housing interior; at least one cathode assembly mounted to the rotor for rotation therewith, the cathode assembly including a cathode for emitting electrons to form an electron beam that strikes the anode surface to generate an x-ray beam; a means for rotating the annular rotor such that electron beam is rotated around the anode surface; an active vacuum pump hermetically sealed into the housing interior with no exhaust for discharging atoms evacuated form the interior region, the active vacuum pump actively maintaining a vacuum of at least 10-6 Torr in the housing interior.

이 특허를 인용한 특허 (27)

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
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연합인증

Ring tube x-ray source with active vacuum pumping 원문보기

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이 특허를 인용한 특허 (27)

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Ring tube x-ray source with active vacuum pumping 원문보기

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이 특허를 인용한 특허 (27)

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