US3592022A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricant seal
Assignee: Borg Warner Corp
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Filing: 1969-12-15
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Granted: 1971-07-13
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Expires: 1989-12-15
Abstract
Abstract An elastically resilient lubricant seal includes a deformable shoulder portion for interference fitted engagement with a bearing cup and has a purging channel extending through part of the shoulder to define a purging lip. Elastically resilient sidewalls of the channel provide a bias for the lip which is independent of the fit between the seal and cup. A hinged shield portion is provided for protecting the lip from external contaminants.
Inventors
- 👤 Raymond E Stokely
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:03
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/72; F16C33/76; F16C33/78; F16C33/7803; F16C33/7809; F16D; F16D3/00; F16D3/16; F16D3/26; F16D3/38; F16D3/382; F16D3/385; F16D3/40; F16D3/41; F16C2361/00; F16C2361/41
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
174 words
A lubricant seal adapted to control purging of lubricant from a bearing of a universal joint, said bearing Including a bearing cup having an internal cylindrical surface adapted to receive said seal; said seal including an annular body of elastically resilient deformable elastomeric material having a face thereof secured to a relatively rigid backing ring, said body including inner flexible sealing means adapted for wiping engagement with a trunnion portion of said universal joint and including an outer circumferential surface adapted for compressive static engagement with said bearing cup internal cylindrical surface; and said seal including a purging channel extending through said backing ring and a portion of said body, said channel being defined in part by a pair of spaced elastic sidewalls extending from a bottom wall, said bottom wall and sidewalls intersecting said outer cylindrical surface defining a purging lip therein spaced axially from and supported by said backing ring, said purging lip being resiliently biased by means of said elastic sidewalls for limited axial movement toward and from said backing ring.
Claim 2
Dependent Claim
174 words
A lubricant seal adapted to control purging of lubricant from a bearing of a universal joint, said bearing Including a bearing cup having an internal cylindrical surface adapted to receive said seal; said seal including an annular body of elastically resilient deformable elastomeric material having a face thereof secured to a relatively rigid backing ring, said body including inner flexible sealing means adapted for wiping engagement with a trunnion portion of said universal joint and including an outer circumferential surface adapted for compressive static engagement with said bearing cup internal cylindrical surface; and said seal including a purging channel extending through said backing ring and a portion of said body, said channel being defined in part by a pair of spaced elastic sidewalls extending from a bottom wall, said bottom wall and sidewalls intersecting said outer cylindrical surface defining a purging lip therein spaced axially from and supported by said backing ring, said purging lip being resiliently biased by means of said elastic sidewalls for limited axial movement toward and from said backing ring.
Claim 3
Dependent Claim
42 words
A lubricant seal according to claim 1 in which said outer circumferential surface includes a deformable ridge adapted for compressive static engagement with said bearing cup internal cylindrical surface, said channel bottom and sidewalls intersecting said ridge for defining said purging lip.
Claim 4
Dependent Claim
50 words
A lubricant seal according to claim 1 in which said annular body further includes an integral annular resilient hinge portion spaced axially from said outer circumferential surface supporting an integral annular shield portion disposed radially outwardly of said purging lip for limited axial displacement toward and from said backing ring.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-12 | 1975-01-11 | 1975-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-12 | 1979-01-11 | 1979-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-12 | 1983-01-11 | 1983-07-13 | $7700.00 | Window Closed / Lapsed |