IPC분류정보
| 국가/구분 |
United States(US) Patent
등록
|
| 국제특허분류(IPC7판) |
|
| 출원번호 |
US-0651562
(1991-02-06)
|
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발명자
/ 주소 |
- Black David D. (Elgin IL) Vering Anthony W. (Arlington IL)
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| 출원인 / 주소 |
- Chicago Rawhide Manufacturing Co. (Elgin IL 02)
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| 인용정보 |
피인용 횟수 :
41 인용 특허 :
0 |
초록
▼
A unitized, fluid seal assembly for heavy duty applications. The seal assembly includes a primary seal unit, an annular wear sleeve, and a separately formed thrust bumper made from a stiff but resilient, high temperature resistant, lubricous plastic material. The thrust bumper has a body with oppose
A unitized, fluid seal assembly for heavy duty applications. The seal assembly includes a primary seal unit, an annular wear sleeve, and a separately formed thrust bumper made from a stiff but resilient, high temperature resistant, lubricous plastic material. The thrust bumper has a body with opposed, tapered surfaces meeting to define a narrow band that contacts the radial end face of a radial flange on the wear sleeve or the primary seal casing. The primary seal unit includes an elastomeric seal body with primary and excluder lips, and the wear sleeve includes an additional excluder lip contacting a portion of the primary seal casing.
대표청구항
▼
A unitized, fluid retaining and grit exclusion seal assembly for heavy duty applications, said seal assembly comprising, in combination, an annular primary seal unit, an annular wear sleeve assembly having an annular wear sleeve casing, an excluder lip portion, and a thrust bumper element, said prim
A unitized, fluid retaining and grit exclusion seal assembly for heavy duty applications, said seal assembly comprising, in combination, an annular primary seal unit, an annular wear sleeve assembly having an annular wear sleeve casing, an excluder lip portion, and a thrust bumper element, said primary seal unit comprising a casing having a mounting portion and a radially extending flange portion for positioning an elastomeric primary seal body, said elastomeric primary seal body having one portion thereof bonded to a radially inner margin of said radial positioning flange, said elastomeric seal body being defined in part by air and oil side frustoconical surfaces meeting along a generally circular locus to form a primary seal band area of intended contact with a portion of said wear sleeve casing, said wear sleeve comprising a generally cylindrical, axially extending flange positionable in fluid tight relation with an associated rotary shaft to be sealed and at least one radial flange extending outwardly from the axially outer portion of said cylindrical flange, with the radially outwardly directed surface of said cylindrical flange being constructed, arranged and sized for fluid sealing contact between a portion of its surface and said seal band area on said seal lip body, with said excluder lip portion of said wear sleeve assembly having a lip end portion contacting a cooperating portion of said primary elastomeric primary seal casing, said thrust bumper element being made from a stiff but resilient high temperature resistant, lubricous plastic material, and including a thrust bumper body portion having opposed tapered surfaces meeting to define a narrow band of intended contact with an end face of a radial flange on one of said wear sleeve casing and said primary seal casing, said bumper body being positioned in use relative to said one casing so that said narrow contact band in use is, at most, slightly spaced from said end face surface of said one of said wear sleeve casing and said primary seal casing.
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