[특허]Combination sand-blasting and vacuum apparatus

Combination sand-blasting and vacuum apparatus 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B24C-003/02
출원번호	US-0172776 (1980-07-28)
발명자 / 주소	Tasedan Robert T. (562 Joann A Costa Mesa CA 92627)
인용정보	피인용 횟수 : 41 인용 특허 : 0

초록 ▼

A sand-blasting apparatus which is operated by a vacuum system, wherein there is provided a sand-blasting gun having an air-inlet passage and a sand-inlet passage. Air is discharged into a mixing chamber, creating a vacuum therein to suck sand through the sand-inlet passage, and to discharge the sand under high-velocity so as to impinge against the surface to be sanded, the sand being captured within the enclosed discharge end of the gun and then returned to the sand-storage tank under a return vacuum arrangement defined by a continuous low-vacuum flow and a controlled high-vacuum flow, the high-vacuum flow being activated when the trigger valve of the gun is operated.

대표청구항 ▼

A sand-blasting apparatus, including a compressor and a storage tank, comprising: a sand-blasting gun having an air-inlet passage and a sand-inlet passage, and including a longitudinal cylindrical housing provided with front and rear open ends; a first means in said gun to provide a continuous rearward air flow to establish a continuous vacuum in a rearward direction through said cylindrical housing; a second means in said gun to provide a selective rear air flow to establish a secondary selective vacuum in a rearward direction through said cylindrical housing; a trigger-valve means to control air flow to said secondary vacuum means, and interposed between said secondary vacuum means and said air-inlet passage; an air-and-sand-mixing-vacuum chamber; a front air-discharge nozzle positioned within said air-and-sand-mixing-vacuum chamber; a sand-discharge nozzle attached to said gun, and projecting from said front open end of said housing; and means to enclose said sand-discharge nozzle to confine the sand between said gun and the surface of the workpiece being sanded, whereby sand in said enclosure is vacuumed therefrom; wherein said first means to establish a continuous vacuum comprises: a rear discharge bore formed in said gun and positioned to communicate with said air-inlet passage; and a rear air-discharge nozzle mounted in said bore, wherein said rear air-discharge nozzle is disposed adjacent said rear open end of said cylinder; and wherein said second means to establish a selective secondary vacuum comprises: a second air passage disposed between said trigger-valve means and said front air-discharge nozzle, said second air passage communicating with said air-inlet passage when said trigger-valve means is operated; and a pair of discharge orifices communicating between said second air passage and said housing, said orifices being disposed angularly and rearwardly of said second air passage, to establish a rearward vacuum when said trigger-valve means is operated.

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안내	총 건의 자료가 검색되었습니다. 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오. ~ Text(ASCII format) Excel format

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Combination sand-blasting and vacuum apparatus 원문보기

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