US4335889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaft seal with liner flange
Assignee: Stemco Inc
•
Filing: 1980-06-27
•
Granted: 1982-06-22
•
Expires: 2000-06-27
Abstract
Abstract An annular trimmed lip shaft seal of the type not having a metal shell but consisting solely of an elastomeric body and a liner of low friction material bonded thereto, which liner includes a radial flange extending radially out beyond the outside diameter of the elastomeric body for abutting the housing for locating the seal, and for strengthening the seal to provide seal retention and alignment. A method for making the seal and a method for locating, retaining and aligning a seal are also disclosed.
Inventors
- 👤 Douglas A. Cather, Jr.
- 👤 Martin E. Benjamin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:52
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/68; B29C70/74; B29C33/00; B29C33/38; B29C33/40; B29C43/00; B29C43/02; B29C43/18; F; F16; F16J; F16J15/00; F16J15/16; F16J15/32; F16J15/328; F16J15/3284; B29L; B29L2031/00; B29L2031/26
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
61 words
An article comprising: (a) a shaft seal having an annular sealing lip and consisting solely of a molded elastomeric body having a bore contacting surface and a liner of low friction material bonded to said body at least at said sealing lip; and (b) said liner including a radial flange extending radially outwardly beyond said bore-contacting surface of said elastomeric body.
Claim 2
Dependent Claim
61 words
An article comprising: (a) a shaft seal having an annular sealing lip and consisting solely of a molded elastomeric body having a bore contacting surface and a liner of low friction material bonded to said body at least at said sealing lip; and (b) said liner including a radial flange extending radially outwardly beyond said bore-contacting surface of said elastomeric body.
Claim 3
Dependent Claim
18 words
The article as recited in claim 1 wherein said seal is an annular, trimmed lip, narrow cross-section seal.
Claim 4
Dependent Claim
19 words
The article as recited in claim 2 wherein said liner extends continuously from said sealing lip to said flange.
Claim 5
Dependent Claim
17 words
The article as recited in claim 3 wherein said flange extends about 0.030" beyond said bore-contacting surface.
Claim 6
Dependent Claim
12 words
The article as recited in claim 4 wherein said flange is circular.
Claim 7
Dependent Claim
106 words
An article comprising: (a) an annular, trimmed lip shaft seal consisting solely of an annular molded elastomeric body and a liner of low friction material bonded to said body; (b) said body having an outside diameter press-fit surface and including a heel section, a flex section, and a flexible sealing element having a trimmed lip; and (c) said liner covering the entire radially inner surface of said elastomeric body from said lip axially outwardly and also covering the entire axially outer radial surface of the elastomeric body, and said liner including an annular radial flange extending radially outwardly beyond said press-fit surface of said elastomeric body.
Claim 8
Dependent Claim
106 words
An article comprising: (a) an annular, trimmed lip shaft seal consisting solely of an annular molded elastomeric body and a liner of low friction material bonded to said body; (b) said body having an outside diameter press-fit surface and including a heel section, a flex section, and a flexible sealing element having a trimmed lip; and (c) said liner covering the entire radially inner surface of said elastomeric body from said lip axially outwardly and also covering the entire axially outer radial surface of the elastomeric body, and said liner including an annular radial flange extending radially outwardly beyond said press-fit surface of said elastomeric body.
Claim 9
Dependent Claim
19 words
The article as recited in claim 6 wherein said seal has a narrow cross-section of less than approximately 0.125".
Claim 10
Dependent Claim
23 words
The article as recited in claim 6 wherein said press-fit surface in its asmolded condition tapers radially outwardly in the axially inner direction.
Claim 11
Dependent Claim
16 words
The article as recited in claim 6 wherein said flange has a thickness of about 0.015".
Claim 12
Dependent Claim
19 words
The article as recited in claim 6 wherein said flange extends approximately 0.030" beyond said outside diameter press-fit surface.
Claim 13
Dependent Claim
12 words
The article as recited in claim 6 wherein said flange is circular.
References Cited (Backward Citations)
US1430699A
Cited
US2476324A
Cited
US2600293A
Cited
US2690470A
Cited
US2804324A
Cited
US2873153A
Cited
US3011814A
Cited
FR1258972A
Cited
FR1360293A
Cited
US3306683A
Cited
US3493645A
Cited
US3801111A
Cited
US3829105A
Cited
US4038359A
Cited
US4159298A
Cited
US4166627A
Cited
DE2801711A1
Cited
US4168837A
Cited
US4155153A
Cited
US4239243A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-06-21 | 1985-12-21 | 1986-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-21 | 1989-12-21 | 1990-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-21 | 1993-12-21 | 1994-06-22 | $7700.00 | Window Closed / Lapsed |