[특허]Quick change bit holder with ring magnet

[미국특허] Quick change bit holder with ring magnet 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B25B-023/00 B25B-023/12
출원번호	US-0967775 (2013-08-15)
등록번호	US-9227309 (2016-01-05)
발명자 / 주소	Moss, Darren B. Santamarina, Aland Lee, David B. Peters, Michael P. Brunson, Mark E. Mitchener Keffer, Ruth E.
출원인 / 주소	BLACK & DECKER INC.
대리인 / 주소	Harness, Dickey & Pierce, P.L.C.
인용정보	피인용 횟수 : 5 인용 특허 : 131

초록 ▼

A bit holder assembly for a rotary hand or powered tool, includes a body having a hex shank at its rearward end and a retraction collar slidably disposed on the body. The body has a coaxial hex socket formed therein to allow a tool bit to be inserted thereinto. A coil spring biases the retraction collar forwardly and biases a retaining clip toward the bottom of an angular slot formed in the body. The bit is removed by sliding the retraction collar rearwardly, to compress the coil spring and allow the retaining clip to retract back up the slot. A ring magnet is disposed at the forward end of the retraction collar to magnetize a fastener to retain the fastener to the bit.

대표청구항 ▼

1. A bit holder assembly for a rotary tool, comprising: a body having a shank at its rearward end and a coaxial socket formed at a second end to allow a tool bit to be inserted therein, an exterior surface of said body including a threaded portion at said second end;a threaded cap having internal threads engaging said threaded portion of said body and securing an O-ring at an open end of said coaxial socket;a floating collar slidably disposed on said body and including a ring magnet disposed at a forward end of the floating collar to magnetize a fastener to retain the fastener to the tool bit. 2. The bit holder assembly according to claim 1, wherein the ring magnet is attached directly to said floating collar. 3. The bit holder assembly according to claim 1, wherein said threaded cap is tightened against said O-ring to cause said O-ring to expand radially inward to engage and retain a bit within said coaxial socket. 4. The bit holder assembly according to claim 1, wherein said floating collar includes an internal groove on an inner surface thereof and said floating collar is retained on said body by a C-shaped ring received in said internal groove and a first annular groove in the exterior surface of said body. 5. The bit holder assembly according to claim 4, wherein one of said internal groove and said first annular groove is elongated in an axial direction to allow the C-shaped ring to move along an axial length of said one of said internal groove and said first annular groove. 6. The bit holder assembly according to claim 1, wherein said floating collar supports a spacer ring between said ring magnet and said threaded cap. 7. The bit holder assembly according to claim 1, wherein said body includes a second annular groove in said exterior surface adjacent to said threaded portion, wherein said threaded cap has an internal shoulder that engages a forward shoulder of said second annular groove to limit a forward axial movement of said threaded cap. 8. A tool bit assembly, comprising: a shaft having a shank at a first end and a working region disposed at a second end, said shaft having a shaft section between said shank and said working region having a reduced diameter region disposed between two shoulders; anda floating sleeve movably disposed at said second end of said shaft and having a pair of opposed window openings therein and a ball disposed in each of said pair of window openings and received in said reduced diameter region of said shaft and a ring magnet supported at a forward end of said floating sleeve to magnetize a fastener to retain the fastener to the working region of the tool bit. 9. The tool bit assembly according to claim 8, further comprising a spring clip surrounding said floating sleeve and retaining said pair of balls in said pair of window openings. 10. A tool bit assembly, comprising: a tool bit including a shaft having a polygonal shank at a first end and a working head region disposed at a second end;a base collar secured to said shaft by a retainer on an interior surface of the base collar that engages a recess in the shaft; anda floating sleeve assembly slidably received on said base collar and including a ring magnet disposed at a forward end of said floating sleeve to magnetize a fastener to retain the fastener to the working head region of the tool bit. 11. The tool bit assembly according to claim 10, wherein said base collar includes an exterior surface with a first recessed groove, wherein an interior surface of said floating sleeve includes an axially extending second recessed groove that receives a retainer ring that is disposed in said first recessed groove. 12. The tool bit assembly according to claim 11, wherein said base collar includes a stop shoulder axially spaced from said first recessed groove, wherein a rear end of said floating sleeve engages said stop shoulder. 13. The tool bit assembly according to claim 10, wherein said retainer comprises a retainer ring and said an interior surface includes a recessed groove that receives the retainer ring, wherein said retainer ring engages the recess in said shaft to retain said base collar to said shaft. 14. The tool bit assembly according to claim 13, wherein the recess comprises an annular groove formed in the polygonal shank. 15. The tool bit assembly according to claim 13, wherein the recess comprises a plurality of recessed grooves at corner edges of the polygonal shank. 16. The tool bit assembly according to claim 10, wherein said base collar includes an interior shoulder that engages a rearward shoulder of a reduced diameter region of said tool bit.

이 특허에 인용된 특허 (131) 인용/피인용 타임라인 분석

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A62	인명구조; 소방(사다리 E06C)
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[미국특허] Quick change bit holder with ring magnet 원문보기

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[미국특허] Quick change bit holder with ring magnet 원문보기

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이 특허에 인용된 특허 (131) 인용/피인용 타임라인 분석

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