US3923315A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid seal
Assignee: BRAKE & CLUTCH INDUSTRIES AUSTRALIA PTY Ltd 264 EAST BOUNDARY BENTLEIGH VICTORIA AUSTRALIA A CORP OF VICTORIA
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Filing: 1973-04-09
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Granted: 1975-12-02
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Expires: 1993-04-09
Abstract
Abstract A fluid seal having a generally annular body of resilient material and defining a sealing edge or lip which is engageable with a machine component. The sealing lip is defined by the junction of two angularly disposed surfaces, and a pumping configuration is applied to one of those surfaces in the form of a series of ribs which extend at an angle relative to the sealing lip. Adjacent ribs extend in substantially opposite directions so that the rib series presents a zig-zag pattern, and the pumping configuration is bi-directional. A pressure or barrier wall is provided on the seal body adjacent to the surface bearing the pumping configuration and in axially spaced relationship to the sealing lip, and during relative rotation of the seal and machine component, that wall surface should deflect fluid onto the pumping configuration so that it will be influenced towards the sealing lip.
Inventors
- 👤 Bernard Milton Hadaway
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:51
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/32; F16J15/3244
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
190 words
A fluid seal having a generally annular body of resilient material, said body including an axially inner surface and an axially outer surface which converge to define a circular sealing edge for engagement with a machine component, an annular barrier wall located adjacent said axially outer surface and in axially spaced relationship from said sealing edge, said barrier wall projecting generally in the same direction as said sealing edge so that a fluid catchment groove is formed between said axially outer surface and the adjacent side of said barrier wall, a bidirection pumping configuration on said axially outer surface to direct fluid towards said sealing edge during relative rotation between said seal and said machine component, said configuration comprising a series of ribs, each said rib disposed so as to extend entirely between said sealing edge and said barrier wall side at an angle relative to said sealing edge, and each alterNate said rib extending substantially parallel to each other and angularly relative to the immediately adjacent said ribs whereby said barrier wall deflects fluid on to the pumping configuration so that it will be influenced towards the sealing edge.
Claim 2
Dependent Claim
190 words
A fluid seal having a generally annular body of resilient material, said body including an axially inner surface and an axially outer surface which converge to define a circular sealing edge for engagement with a machine component, an annular barrier wall located adjacent said axially outer surface and in axially spaced relationship from said sealing edge, said barrier wall projecting generally in the same direction as said sealing edge so that a fluid catchment groove is formed between said axially outer surface and the adjacent side of said barrier wall, a bidirection pumping configuration on said axially outer surface to direct fluid towards said sealing edge during relative rotation between said seal and said machine component, said configuration comprising a series of ribs, each said rib disposed so as to extend entirely between said sealing edge and said barrier wall side at an angle relative to said sealing edge, and each alterNate said rib extending substantially parallel to each other and angularly relative to the immediately adjacent said ribs whereby said barrier wall deflects fluid on to the pumping configuration so that it will be influenced towards the sealing edge.
Claim 3
Dependent Claim
28 words
A fluid seal according to claim 1, wherein the included angle defined between each said rib and said sealing edge is within the range 25* to 30* inclusive.
Claim 4
Dependent Claim
35 words
A fluid seal according to claim 1, wherein said barrier wall is defined by a continuous circumferential bead which projects radially towards said machine component and is dimensioned so as not to engage that component.
Claim 5
Dependent Claim
29 words
A fluid seal according to claim 1, wherein said sealing edge defines a radially inner peripheral edge of said body so as to be engageable with a machine component.
References Cited (Backward Citations)
US2446380A
Cited
US3497225A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-01 | 1979-06-02 | 1979-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-01 | 1983-06-02 | 1983-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-01 | 1987-06-02 | 1987-12-02 | $7700.00 | Window Closed / Lapsed |