Patent US3639016A successfully refreshed from Google Patents.
US3639016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rolling contact bearing seals
Assignee: NTN Europe SA
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Filing: 1970-03-12
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Granted: 1972-02-01
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Expires: 1990-03-12
Abstract
Abstract Seal for ball and roller bearings, of the type wherein the seal consisting of rubber or similar material is associated with one of the bearing races and comprises at least one lip coacting with an associated surface of the other race, such as a baffle plate, characterized in that the seal comprises an annular portion or bead force fitted to a surface associated with the race receiving same, thus providing between the lip or lips of said seal and the surface associated therewith a chamber adapted to be filled with a substance for improving the frictional contact while isolating said seal.
Inventors
- 👤 Claude Raymond Bourgeois
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:11
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/72; F16C33/76; F16C33/78; F16C33/7886; F16C19/00; F16C19/22; F16C19/34; F16C19/36; F16C19/364; F16C33/30; F16C33/66; F16C33/6603; F16C33/6607; F16C33/6618; F16C33/7803; F16C33/7813; F16C33/7869; F16C33/7879; F16C33/7889; F16C43/00; F16C43/04; F16C2300/00; F16C2300/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
116 words
A resilient bearing seal for a bearing having a casing, first and second bearing races disposed in said casing and a baffle plate connected to one of said bearing races, said baffle plate having an in-turned protective marginal portion, said seal comprising: (a) an annular portion in fitted engagement with the outer surface of said first bearing race, said annular portion having a toroidal bead in sealing engagement between said outer surface of said first race and said casing; (b) a first lip portion bearing against said baffle plate; (c) and a cavity defined by said baffle plate, said lip portion and at least one of said bearing races, said cavity having a lubricant contained therein.
Claim 2
Dependent Claim
116 words
A resilient bearing seal for a bearing having a casing, first and second bearing races disposed in said casing and a baffle plate connected to one of said bearing races, said baffle plate having an in-turned protective marginal portion, said seal comprising: (a) an annular portion in fitted engagement with the outer surface of said first bearing race, said annular portion having a toroidal bead in sealing engagement between said outer surface of said first race and said casing; (b) a first lip portion bearing against said baffle plate; (c) and a cavity defined by said baffle plate, said lip portion and at least one of said bearing races, said cavity having a lubricant contained therein.
Claim 3
Dependent Claim
50 words
A resilient seal as defined in claim 1, wherein said annular portion comprises a series of successive baffle-forming beads disposed between said casing and said first bearing race, said series of beads having gaps defined therebetween containing a lubricant for sealing the joint between said casing and said first race.
Claim 4
Dependent Claim
14 words
Seal according to claim 2, characterized in that said beads have a toroidal contour.
Claim 5
Dependent Claim
21 words
Seal according to claim 2, characterized in that said beads have a tooth-shaped profile corresponding preferably to that of Buttress threads.
Claim 6
Dependent Claim
42 words
A resilient seal as defined in claim 1, further comprising a second lip portion in fitted engagement with said second bearing race, wherein said cavity is defined by said first and second lip portions, said second bearing race and said baffle plate.
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) | 1975-01-31 | 1975-08-02 | 1976-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-31 | 1979-08-02 | 1980-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-31 | 1983-08-02 | 1984-02-01 | $7700.00 | Window Closed / Lapsed |