[특허]Bearing isolator seal with floating ring

[미국특허] Bearing isolator seal with floating ring 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F16J-015/36
출원번호	UP-0455542 (2009-06-03)
등록번호	US-7857320 (2011-02-24)
발명자 / 주소	Chang, Ming S.
대리인 / 주소	Kier, Philip H.
인용정보	피인용 횟수 : 4 인용 특허 : 26

초록 ▼

A bearing isolator seal is used to seal the space between the housing and the rotating shaft to prevent contaminants such as abrasive particles, moisture, and corrosive media from entering the bearing. The preferred embodiment consists of a stationary retainer ring with a groove for an O-ring adjacent to a bearing housing, a rotating mating ring with a groove for a second O-ring adjacent to a rotating shaft, and a floating ring made of a material with a low coefficient of friction and a low elastic modulus. The cross-section of the floating ring can be Z-shaped, U-shaped, or V-shaped. A C-shaped locking ring is used as an aid to assemble the aforementioned seal components into a module and is subsequently removed after the seal is installed. Contaminants are stopped at both ends of the floating ring as well as at the O-rings by their spring action. The seal is also designed to release pressure built up in the bearing lubricating system.

대표청구항 ▼

I claim: 1. A bearing isolator seal situated between a bearing housing and a rotating shaft, the bearing isolator seal comprised of the following arrangement: a stationary retainer with an O-ring in a groove in its outer diameter facing the bear housing, the retainer ring having a generally Γ-shaped cross section but with its horizontal member displaced in part to accommodate the groove containing the O-ring; a rotating mating ring with an O-ring in its inner diameter facing the rotating shaft, the mating ring having an h-shaped cross section; a floating ring under axial compression in tight contact with the retainer ring and with the mating ring forming a pressure releasing channel between the floating ring and the retainer ring, the floating ring having a cross-section selected from the group comprising a Z-shape, V-shape, and U-shape and being made of a material having a low coefficient of friction and a low elastic modulus; and a removable C-shaped locking ring placed in the retainer ring's inner diameter and holding the retainer ring, mating ring, and floating ring in place during installation. 2. A bearing isolator seal as set forth in claim 1 wherein the floating ring has a V-shaped cross-section that forms a first channel between the floating ring and the retainer ring, and a second channel between the floating ring and the mating ring. 3. A bearing isolator seal as set forth in claim 1 wherein the floating ring has a U-shaped cross-section that forms a channel between the floating ring and the retainer ring, and a second channel between the floating ring and the mating ring. 4. A bearing isolator seal situated between a bearing housing and a rotating shaft, the bearing isolator seal comprised of the following reversed arrangement: a rotating retainer ring that has an inverted Γ-shaped cross-section but with its horizontal section displaced in part to accommodate a groove in its inner diameter for an O-ring facing the rotating shaft; a stationary mating ring that has an inverted h-shaped cross-section with an O-ring in a groove in its outer diameter facing the housing; a floating ring that has cross-section selected from the group comprising an inverted Z-shape, an inverted V-shape, and an inverted U-shape and is made of a material with a low coefficient of friction and a low elastic modulus under axial compression in tight contact with the retainer ring and the mating ring, forming a pressure-releasing channel between the floating ring and the retainer ring; and a removable C-shaped locking ring placed in the outer diameter of the retainer ring and holding the retainer ring, mating ring, and floating ring in place. 5. A bearing isolator seal as set forth in claim 4 wherein the floating ring has an inverted V-shaped cross-section that forms a channel between the floating ring and the retainer ring, and a second channel between the floating ring and the mating ring. 6. A bearing isolator seal as set forth in claim 4 wherein the floating ring has an inverted U-shaped cross-section that forms a channel between the floating ring and the retainer ring, and a second channel between the floating ring and the mating ring.

이 특허에 인용된 특허 (26) 인용/피인용 타임라인 분석

Satsumabayashi Kazuyoshi (Kyoto JA) Kato Takeshi (Hirakata JA), Apparatus for sealing a track shoe.
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Hlzer Helmut (Weinheim DEX), Axle or shaft seal with overlapping ring extension members.
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Orlowski David C., Bearing isolator.
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Chitren,Elizabeth, Bearing isolator with porous seal.
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Calafell ; II Dag O. (Portage MI) Kakabaker Kenneth G. (Kalamazoo MI), Bearing protector with slinger ring.
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Tranter Brian R. (High Wycombe GB2), Bellows seal arrangement.
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Hoeting,Stephen C.; Hodge,Bobby L., Cartridge-type bearing seal for machine tool spindle.
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Braun Minel J. ; Choy Fred K., Floating brush seal.
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Chambers ; Sr. Joseph W. (Santa Ana CA), Fluid pressure assisted rotary shaft seal with labyrinth bushing and replacement seal sleeve cartridge.
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Ludwig Lawrence P. (Fairview Park OH), Fluid seal for rotating shafts.
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Orlowski David C. (Milan IL) Bloch Heinz P. (Montgomery TX), Magnetic seal.
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Adams William V. (Scotts MI) Avard Duane A. (Schoolcraft MI) Waling Leroy A. (Parchment MI), Magnetic seal assembly.
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MacDonald, George, Marine shaft seal with lip seal, bearing and gasket.
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Wiese Winfred J. (Los Angeles CA), Mechanical seal with eccentric seal faces.
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George Fedorovich, Metallic labyrinth seal.
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Richardson Curtis G. (Energy IL), Mounting assembly for the impeller of a fluid pump.
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Orlowski David C. (Milan IL), Pinned unitary bearing seal.
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Johnston David E. (Newcastle upon Tyne GB2), Rotary fluid seals.
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Johnston David E. (Gosforth GB2), Rotary fluid seals with floating sealing rings.
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Schmidt Wayne E. (Scottsdale AZ), Rotary sealing means.
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James Drago ; Joel R. Shaw ; Larry E. Strohm, Rotary shaft bearing isolator seal.
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Haberberger Vitus (Herzogenaurach DEX), Seal.
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Orlowski David C. (3507 78th Ave. ; Drawer 940 Rock Island IL 61201), Sealing rings with complimentary ring members.
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Borowski Richard (Rochester NY), Shaft seal with controlled porosity elements.
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Chitren, Elizabeth; Tones, Christopher, Split bearing isolator and a method for assembling seal.
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Orlowski David C. (Rock Island IL), Static and dynamic shaft seal assembly.
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이 특허를 인용한 특허 (4) 인용/피인용 타임라인 분석

Kennedy, Donald M., Actuation pivot shaft face seal.
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Blumenau, Marc; Eisner, Frank; Gusek, Christopher; Jindra, Fred; Schoenenberg, Rudolf; Willeke, Bert-Reiner; Denner, Tobias; Klatt, Christian; Wemhoener, Jens, Device for strip guidance in a hot medium (II).
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Underwood, Lance D., Flow restrictor for a mud motor.
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Redin, Juan, Seal arrangement.
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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

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[미국특허] Bearing isolator seal with floating ring 원문보기

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[미국특허] Bearing isolator seal with floating ring 원문보기

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