Patent US3984113A successfully refreshed from Google Patents.
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US3873104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seal
Assignee: International Packaging Corp
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Filing: 1972-03-08
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Granted: 1975-03-25
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Expires: 1992-03-08
Abstract
Abstract In combination with a smoothly curved surface to be sealed having a circular section, a bidirectional seal comprising a molded sealing element of resilient material having a surface terminating in a constant radius circular sealing edge, and a plurality of smoothly curved rib segments formed on said surface, having ends circumferentially spaced from one another, each said rib member being tangent to said sealing edge at a point between its said ends.
Inventors
- 👤 Dean R Bainard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:19
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/32; F16J15/3244
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
196 words
For use in combination with an element with a smoothly curved cylindrical surface, a bidirectional seal comprising a molded sealing element of resilient material having a frusto-conical sealing element surface having a longitudinal axis and terminating in a constant radius circular sealing edge and a plurality of discrete spaced rib segments formed on said frusto-conical sealing element surface, each said rib segment a. extending in a straight line in the plane perpendicular to said frustO-conical surface b. extending in a line smoothly convexly curved solely in a direction toward said sealing edge in the plane perpendicular to said longitudinal axis. c. having an average radius of curvature in the plane perpendicular to said longitudinal axis greater than that of said sealing edge d. tangential to said sealing edge at a point centrally between its ends e. spaced at its ends a limited distance from said sealing edge f. having its ends circumferentially spaced from the end of an adjacent segment and g. having a surface inclined radially inwardly toward said longitudinal axis, the portion of said inclined surface in contact with a said smoothly curved surface being substantially parallel with the axis of said sealing ring.
Claim 2
Dependent Claim
196 words
For use in combination with an element with a smoothly curved cylindrical surface, a bidirectional seal comprising a molded sealing element of resilient material having a frusto-conical sealing element surface having a longitudinal axis and terminating in a constant radius circular sealing edge and a plurality of discrete spaced rib segments formed on said frusto-conical sealing element surface, each said rib segment a. extending in a straight line in the plane perpendicular to said frustO-conical surface b. extending in a line smoothly convexly curved solely in a direction toward said sealing edge in the plane perpendicular to said longitudinal axis. c. having an average radius of curvature in the plane perpendicular to said longitudinal axis greater than that of said sealing edge d. tangential to said sealing edge at a point centrally between its ends e. spaced at its ends a limited distance from said sealing edge f. having its ends circumferentially spaced from the end of an adjacent segment and g. having a surface inclined radially inwardly toward said longitudinal axis, the portion of said inclined surface in contact with a said smoothly curved surface being substantially parallel with the axis of said sealing 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) | 1978-03-24 | 1978-09-23 | 1979-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-24 | 1982-09-23 | 1983-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-24 | 1986-09-23 | 1987-03-25 | $7700.00 | Window Closed / Lapsed |