[특허]Unitary crank spindle assembly and method of fabrication

[미국특허] Unitary crank spindle assembly and method of fabrication 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B21D-053/86 B21J-005/00 B21K-021/00 B62K-021/02 B62M-003/00 B62K-021/04
출원번호	US-0719389 (2010-03-08)
등록번호	US-9259777 (2016-02-16)
발명자 / 주소	Dodman, Christopher P. Metz, Stephen B.
출원인 / 주소	CYCLING SPORTS GROUP, INC.
대리인 / 주소	Cantor Colburn LLP
인용정보	피인용 횟수 : 0 인용 특허 : 31

초록 ▼

A bicycle is provided having a unitary steering tube-crown member and a unitary crank arm-spindle member. A multistage aluminum 3D forging process is used to form the unitary members. This may allow the fabrication of components with substantially hollow interior areas to reduce weight, reduce part count while maintaining high strength and ductility. The multistage 3D forging process provided also allows the combination of multiple components into a single unitary part.

대표청구항 ▼

1. A method of fabricating an integrally formed unitary bicycle crank-arm spindle comprising: forming a first elongated arm by three-dimensional (3D) forging, said first elongated arm having a solid pedal end portion and a first axial bore, said first axial bore having a first opening extending through a second end of said first elongated arm opposite said solid pedal end portion, said first axial bore having a closed end opposite the first opening, the closed end being adjacent the solid pedal end portion;forming a first projection on said first elongated arm adjacent said second end and opposite said solid pedal end portion;forming an elongated spindle from said first elongated arm by extending said first projection and forming a second axial bore in said first projection by 3D forging, the elongated spindle having an end opposite the first arm configured to couple to a second elongated arm, the second axial bore defining an axis of rotation of the first elongated arm when installed on a bicycle, said spindle being unitary and monolithic with said first elongated arm, wherein said second axial bore intersects and is contiguous with said first axial bore;bending said first elongated arm, wherein said solid pedal end portion is substantially perpendicular to said first projection;forming the second elongated arm by 3D forging, said second elongated arm having a third end and a third axial bore, said third axial bore having a second opening at a fourth end of said second elongated arm;forming a second projection on said second elongated arm adjacent said third end; and,forming a fourth axial bore in said second projection, wherein said fourth axial bore is sized to receive said spindle opposite said first elongated arm; andinserting the spindle in the fourth axial bore to form a crank-arm spindle assembly. 2. The method of claim 1 further comprising: inserting a first plug into said first opening, said first plug having third opening, said third opening being substantially co-axial with said second axial bore when the first plug is inserted into said first opening; and,inserting a second plug into said second opening, said second plug having a fourth opening, said fourth opening being substantially co-axial with said second axial bore when said second plug is inserted into said second opening. 3. The method of claim 2 further comprising: coupling said first plug to said first elongated arm by brazing; and,coupling said second plug to said second elongated arm by brazing. 4. The method of claim 2 further comprising: coupling said first plug to said first elongated arm by bonding; and,coupling said second plug to said second elongated arm by bonding.

이 특허에 인용된 특허 (31) 인용/피인용 타임라인 분석

Kadlicko George (Mississauga CAX) Halina Will (Toronto CAX), Active suspension system.
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Princehouse Joseph B. (Dayton OH), Apparatus and method for forging a bicycle crank.
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Tani Masahiko (Sakai JPX), Bicycle chain wheel assembly and crank arm.
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Chiang, Douglas, Bicycle crank arm and method of making same.
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Durham Roger O. (1370 Thompson Ave. Glendale CA 91201), Bicycle crank arm with internal flange.
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French, George, Bicycle crank assembly.
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Schlanger, Raphael, Bicycle crank assembly.
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Murphy, Roger Paul; Manuell, Chad, Bicycle fork with improved steer tube and crown.
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Lewis, Barry, Bicycle forks, crown, and steerer tube assembly.
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Lewis, Barry; Moechnig, Steven, Bicycle steerer assembly having captured fork legs.
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Miyoshi, Hiroyuki, Bicycle suspension.
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Miyoshi, Hiroyuki, Bicycle suspension.
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Wesling,Kevin, Cable guide for a bicycle suspension fork.
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Bard Aaron E. ; Ross ; IV David, Continuously compensating bicycle suspension system.
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Lin King-Chen (No. 173 ; Kuei Suei Street Kaohsiung City TWX) Lin Ming-Chang (No. 66 ; Huai An Street Kaohsiung City TWX), Crank cover assembly for a bicycle.
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Yi Chen-Hsing,TWX, Fluid regulating device for use with a shock-absorbing cylinder to obtain a variable shock absorbing effect.
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Chamberlain,Jason L., Frame assembly for a bicycle.
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Chamberlain,Jason L., Frame assembly for a bicycle.
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Chamberlain,Jason L., Head tube for bicycle frame.
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Smith Garrett A. ; Kozuschek Michael A. ; Nelson David A., Hollow crank arm.
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Valle,Maurizio; Pasqua,Paolo, Hollow crank arm for a bicycle and process for manufacturing the same.
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Fox,Robert C., Inertia valve shock absorber.
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Allen Kirk A., Light-weight bicycle crown containing lightening bores.
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Jiang, Cheng-Xun, Method for making hollow bicycle cranks.
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Zeng,Jie Dong, Method for manufacturing integrated bicycle crank arm and spider assembly and the crank arm and spider assembly made thereby.
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Tony Leng TW, Method for manufacturing metal material with an intermediate hollow and two solid end portions.
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Buckmiller Daniel K. ; Erickson David Wayne ; Olsen Douglas G. ; Philpot Randall J., Net shape filament winding manufacturing process, articles made therefrom and composite bicycle fork and other components.
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Kimura Isao (125 ; 14-23 ; Shiratori 4-chome Katsushika-ku ; Tokyo JPX), Oil hydraulic bulge-forming process for the manufacture of front fork blank of single unit type for bicycles.
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Voss, Darrell W.; Klein, Gary G., Telescoping-type front fork bicycle suspensions.
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Mombrinie, Bruno, Two-piece bicycle crank set.
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Durham Roger O. (1370 Thompson St. Glendale CA 91201), Two-piece crankshaft for bicycles.
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[미국특허] Unitary crank spindle assembly and method of fabrication 원문보기

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