US3603602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforced seal
Assignee: Skinner Precision Industries Inc
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Filing: 1969-11-28
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Granted: 1971-09-07
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Expires: 1989-11-28
Abstract
Abstract A composite O-ring-type seal having a molded elastomeric body and a reinforcing spring embedded therein to prevent excessive deformation of the elastomeric body and in which the molded elastomeric body is contoured to provide for accurately locating the reinforcing spring within the body and to provide opposed annular sealing ribs for providing effective sealing.
Inventors
- 👤 Lawrence D Padula
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:53
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/32; Y; Y10; Y10S; Y10S277/00; Y10S277/91
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
192 words
A composite annular seal useful in providing radial sealing comprising an annular body of elastomeric material and an annular reinforcing spring at least substantially embedded within said annular body generally coaxially therewith, the reinforcing spring being resilient circumferentially for permitting circumferential expansion of the annular seal from a normal state thereof and being rigid in an axial direction for preventing excessive seal distortion and resulting improper radial sealing from axial compression forces on the seal; the composite elastomeric body and reinforcing spring having a substantially symmetrical and uniform transverse cross section with an elastomeric body section with a radial thickness greater than the radial thickness of the reinforcing spring by a first relatively large amount and an axial width greater than the axial width of the reinforcing sprIng by a second relatively small amount, the annular elastomeric body having annular sealing ribs radially inwardly and radially outwardly of the annular reinforcing spring to provide for inner and outer radial sealing whereby the seal may be expanded to provide appropriate inner radial sealing pressure and the reinforcing spring prevents seal distortion and resulting improper radial sealing from axial compression forces on the deal.
Claim 2
Dependent Claim
192 words
A composite annular seal useful in providing radial sealing comprising an annular body of elastomeric material and an annular reinforcing spring at least substantially embedded within said annular body generally coaxially therewith, the reinforcing spring being resilient circumferentially for permitting circumferential expansion of the annular seal from a normal state thereof and being rigid in an axial direction for preventing excessive seal distortion and resulting improper radial sealing from axial compression forces on the seal; the composite elastomeric body and reinforcing spring having a substantially symmetrical and uniform transverse cross section with an elastomeric body section with a radial thickness greater than the radial thickness of the reinforcing spring by a first relatively large amount and an axial width greater than the axial width of the reinforcing sprIng by a second relatively small amount, the annular elastomeric body having annular sealing ribs radially inwardly and radially outwardly of the annular reinforcing spring to provide for inner and outer radial sealing whereby the seal may be expanded to provide appropriate inner radial sealing pressure and the reinforcing spring prevents seal distortion and resulting improper radial sealing from axial compression forces on the deal.
Claim 3
Dependent Claim
18 words
A composite annular seal according to claim 1 wherein the annular spring is an axially extending wave spring.
Claim 4
Dependent Claim
22 words
A composite annular seal according to claim 1 wherein the annular body, in transverse section, is generally elongated in the radial direction.
Claim 5
Dependent Claim
16 words
A composite annular seal according to claim 3 wherein the annular spring is a coil spring.
Claim 6
Dependent Claim
64 words
A composite annular seal according to claim 4 wherein the annular body is integrally formed with the coil spring, wherein the coil spring has individual coils of substantially constant diameter, and wherein the annular body has at least an annular section thereof substantially coextensive with the individual spring coils to provide for locating the annular spring within the annular body when it is molded.
Claim 7
Dependent Claim
20 words
A composite annular seal according to claim 5 wherein the annular body has in transverse section a generally hourglass shape.
Claim 8
Dependent Claim
35 words
A composite annular seal according to claim 6 wherein the annular body is contoured to provide a single outer annular rib and a single inner annular rib of substantially the same size in transverse section.
Claim 9
Dependent Claim
32 words
A composite, annular seal according to claim 4 wherein the annular body is contoured to provide a pair of axially spaced annular sealing ribs on one radial side of the coil spring.
References Cited (Backward Citations)
US1984806A
Cited
US2573225A
Cited
GB836584A
Cited
US2828238A
Cited
FR1138633A
Cited
US3051500A
Cited
US3445120A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-06 | 1975-03-08 | 1975-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-06 | 1979-03-08 | 1979-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-06 | 1983-03-08 | 1983-09-07 | $7700.00 | Window Closed / Lapsed |