[특허]Shallow flangeway rail seal

Polycorp Inc.

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특허 상세정보

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Shallow flangeway rail seal

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	E01B-001/00
미국특허분류(USC)	238/008; 238/009; 238/283; 238/264
출원번호	US-0826761 (2010-06-30)
등록번호	US-8100342 (2012-01-24)
발명자 / 주소	Burkhardt, Bruce E. Ellis, Richard T.
출원인 / 주소	Polycorp Inc.
대리인 / 주소	Marshall & Melhorn LLC
인용정보	피인용 횟수 : 0 인용 특허 : 14

초록
▼

A rail seal for sealing the gap between a rail and a concrete panel in a railroad crossing so as to provide a generally even or level surface for vehicular or pedestrian traffic while still providing an appropriate rail structure for receiving and guiding the train wheels along the tracks is provided. More particularly, the upper surface of the rail seal is formed with a recessed portion or flangeway for receiving the flanged-end of a train. The flangeway or recessed portion, however, is formed so that the surface of the flangeway lies in a plane above the bottom of the rail head but below the upper surface of the rail head, thereby providing a “shallow” flangeway. The provision of a “shallow” flangeway helps to reduce the risks associated with vehicular and/or other pedestrian traffic that must access or cross the railroad tracks. Specifically, the shallow flangeway helps to prevent the heels of pedestrian shoes or the smaller width bicycle, stroller or wheelchair wheels from becoming trapped in the gaps typically associated with railroad crossing structures.

대표
청구항
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1. A rail seal for a railroad crossing, the rail seal for sealing a gap between a rail and a surrounding road surface or platform of a railroad or streetcar crossing, the rail having a rail head, a rail base and a web portion interconnecting the rail head and rail base, the rail seal comprising: an elongated elastomeric seal body;a first surface formed along the length of the seal body for generally abutting a gauge side of the rail;a second surface formed along the length of the seal body generally opposite to said first surface, the second surface generally abutting a corresponding edge of the surrounding road surface of the railroad crossing; anda flangeway formed in an upper surface of the seal body along the length thereof, the flangeway including a substantially horizontal surface for receiving a flanged wheel of a train;wherein the substantially horizontal surface lies in a plane above the bottom of the rail head but below the upper surface of the rail head. 2. A rail seal as claimed in claim 1, wherein the flangeway is compressible such that the flangeway lies generally in a plane below the bottom of the rail head in response to the flanged wheel of a passing train. 3. A rail seal as claimed in claim 1, wherein the flangeway is compressible such that the flangeway achieves a depth that corresponds to the depth of the flanged train wheel. 4. A rail seal as claimed in claim 1, further comprising a cavity passage formed within the seal body along the length thereof, the cavity passage being generally aligned with and formed generally below the flangeway to allow for compression of the rail seal away from the rail head. 5. A rail seal as claimed in claim 4, wherein said cavity passage is filled with a closed cell foam material. 6. A rail seal as claimed in claim 4, wherein additional cavity passages are formed within the seal body, the additional cavity passages further increasing the compressibility of the rail seal. 7. A rail seal as claimed in claim 1, wherein the elongated elastomeric seal body is formed by extrusion. 8. A rail seal as claimed in claim 1, wherein the first surface abuts and seals against the web portion of the rail. 9. A rail seal as claimed in claim 1, wherein the upper surface is formed with a first portion extending between the second surface and the flangeway, the first portion lying generally in the same plane as the surrounding road surface and the upper surface of the rail head. 10. A rail seal as claimed in claim 9, wherein the first portion is a ribbed surface. 11. A rail seal as claimed in claim 1, wherein the rail seal is cast directly into the corresponding edge of the surrounding road surface. 12. A rail seal as claimed in claim 1, wherein the rail seal is bolted to the corresponding edge of the surrounding road surface. 13. A rail seal as claimed in claim 1, wherein the surrounding road surface is asphalt, the asphalt being poured so as to contact and abut the second surface of the rail seal. 14. A railway crossing structure comprising: a pair of rails, each rail having a rail head, a base flange and a web portion interconnecting the rail head and the base flange;a plurality of rail ties secured transversely between the rails;a gauge panel positioned on a gauge side of the rails, the gauge panel forming a first gap between an edge of the panel and the gauge side of the corresponding rail;a pair of field panels, each field panel positioned on a field side of a corresponding rail, each field panel being spaced away from the corresponding rail to form a second gap;a gauge-side rail seal positioned within each first gap, the gauge-side rail seal comprising: an elongated elastomeric seal body;a first surface formed along the length of the seal body for generally abutting a gauge side of the rail;a second surface formed along the length of the seal body generally opposite to said first surface, the second surface generally abutting a corresponding edge of the gauge panel; anda flangeway formed in an upper surface of the seal body along the length thereof, the flangeway including a substantially horizontal surface for receiving a flanged wheel of a train;wherein the substantially horizontal surface lies in a plane above the bottom of the rail head but below the upper surface of the rail head. 15. A railroad crossing structure as claimed in claim 14, wherein a field-side rail seal is positioned within each second gap. 16. A railroad crossing structure as claimed in claim 14, wherein said field panels and said gauge panels are concrete panels. 17. A railroad crossing structure as claimed in claim 14, wherein said field panels and gauge panels are formed of poured asphalt. 18. A railroad crossing structure as claimed in claim 14, wherein the flangeway of the gauge-side rail seal is compressible such that the flangeway lies generally in a plane below the bottom of the rail head in response to the flanged wheel of a passing train, the flangeway achieving a depth that corresponds to the depth of the flanged train wheel. 19. A railroad crossing structure as claimed in claim 14, wherein the gauge-side rail seal further comprises at least one cavity passage formed within the seal body along the length thereof, the at least one cavity passage being generally aligned with and formed generally below the flangeway to allow for compression of the rail seal away from the rail head. 20. A railroad crossing structure as claimed in claim 14, wherein the railroad crossing structure is a street car crossing.

이 특허에 인용된 특허 (14)

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특허 상세정보

Shallow flangeway rail seal

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이 특허에 인용된 특허 (14)

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특허 상세정보

Shallow flangeway rail seal

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이 특허에 인용된 특허 (14)

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상세정보조회

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IPC 상세정보(version : 201201)

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