[특허]Hand-held rotary cut-off tool

[미국특허] Hand-held rotary cut-off tool 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B26B-029/00 B23D-045/16
출원번호	US-0641311 (2000-08-18)
발명자 / 주소	Mulford, Ronald J. Bass, Gary S.
출원인 / 주소	Campbell Hausfeld/Scott Fetzer Company
대리인 / 주소	Jones Day
인용정보	피인용 횟수 : 16 인용 특허 : 12

초록 ▼

A rotary cut-off tool has a hand-held housing. The housing has an open end centered on an axis and a housing abutment surface facing axially outward of the open end. A motor within the housing has an output shaft. A guard has a guard flange with a mounting hole. An arbor is configured to extend axially from the shaft through the mounting hole. A cut-off disk is receivable on the arbor. A spring has an installed position compressively engaged by and between the housing abutment surface and the guard flange, such that the spring releasably restrains the guard from swiveling about the axis.

대표청구항 ▼

1. An apparatus comprising: a hand-held housing having an open end centered on an axis and a housing abutment surface facing axially outward of said open end; a motor, within said housing, having an output shaft extending along said axis; a guard having a guard flange with a mounting hole; an arbor configured to extend axially from said shaft through said mounting hole; a cut-off disk receivable on said arbor; and a spring configured to be received in an installed position in which said spring is compressively engaged by and between said housing abutment surface and said guard flange, such that said spring releasably restrains said guard from swiveling about said axis; said housing further having an internal screw-thread centered on said axis; and said apparatus further comprising a tubular fitting having a bore that receives said arbor, an external screw-thread that is engageable with said internal screw-thread, an axially facing fitting abutment surface, and a fitting shank portion between said fitting abutment surface and said external screw-thread; with said spring being received over said fitting shank portion when said spring is in said installed position. 2. An apparatus comprising: a hand-held housing having an open end centered on an axis, an internal screw-thread centered on said axis, and a housing abutment surface facing axially outward of said open end; a motor, within said housing, having an output shaft; an arbor attached to said output shaft; a cut-off disk fastened to said arbor; a tubular fitting having: a bore that receives said arbor; an external screw-thread that is engaged with said internal screw-thread; a fitting abutment surface facing axially toward said housing abutment surface; and a fitting shank portion located axially between said fitting abutment surface and said external screw-thread; a guard partially surrounding said cut-off disk, said guard having an annular guard flange received over said fitting shank portion axially between said housing abutment surface and said fitting abutment surface; and a spring received over said fitting shank portion, said spring being compressed axially between said housing abutment surface and said guard flange, whereby said guard is releasably restrained from swiveling about said fitting shank portion by a restraining force applied by said spring. 3. An apparatus as defined in claim 2 wherein said fitting abuts said motor. 4. An apparatus as defined in claim 2 wherein said housing abutment surface is an axially-outer edge of said annular open end. 5. An apparatus as defined in claim 2 wherein said fitting has a structure, at an axially-outer end of said fitting, configured to enable turning said fitting by a tightening tool. 6. An apparatus as defined in claim 5 wherein said structure comprises flats configured to enable turning said fitting by a wrench. 7. An apparatus comprising: a hand-held housing having an open end, a housing abutment surface facing outward of said open end, and an internal screw thread; a motor, within said housing, having an output shaft; a guard having a guard flange with a mounting hole; an arbor configured to extend from said shaft through said mounting hole; a cut-off disk receivable on said arbor; spring configured to be received in an installed position in which said spring is compressively engaged by and between said housing abutment surface and said guard flange, such that said spring releasably restrains said guard from swiveling about said arbor; and a tubular fitting having a bore that receives said arbor, an external screw-thread that is engageable with said internal screw-thread, a fitting abutment surface, and a fitting shank portion between said fitting abutment surface and said external screw thread; with said spring being received over said fitting shank portion when said spring is in said installed position.

이 특허에 인용된 특허 (12) 인용/피인용 타임라인 분석

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[미국특허] Hand-held rotary cut-off tool 원문보기

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이 특허에 인용된 특허 (12) 인용/피인용 타임라인 분석

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[미국특허] Hand-held rotary cut-off tool 원문보기

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이 특허에 인용된 특허 (12) 인용/피인용 타임라인 분석

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