US3623628A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil filler plug
Assignee: Microdot Inc
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Filing: 1970-02-04
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Granted: 1971-11-30
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Expires: 1990-02-04
Abstract
Abstract The oil filler cap is molded from an oil-resistant elastomer to have a circular top which is shouldered on the bottom side to provide a gripping edge for ease of removal. A cylindrical sleeve extends downwardly from the top having a diverging outer surface which provides a downward urge and locking seal with the reversely turned edge at the oil filler opening in an engine rocker arm cover which is sealed thereby.
Inventors
- 👤 Brian F Rericha
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:30
CPC Classifications
B; B65; B65D; B65D39/00; B65D39/04; F; F01; F01M; F01M11/00; F01M11/04; F01M11/0408; F01M2011/0416; F01M2011/0491; F02; F02F; F02F7/00; F02F7/006
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
106 words
In an oil filler cap molded from an elastomer, a top portion larger in diameter than the fill opening to be sealed, a sleeve portion depending from the top portion providing a central recess and flexibility to the sleeve portion wall, the outer surface of said sleeve portion diverging downwardly from the top portion and diverging upwardly from the bottom end to provide an entrance guide for the insertion of the sleeve portion within an opening, and a shoulder below the peripheral edge of the top portion which permits the top portion to be readily grasped at said peripheral edge for the removal of the cap.
Claim 2
Dependent Claim
106 words
In an oil filler cap molded from an elastomer, a top portion larger in diameter than the fill opening to be sealed, a sleeve portion depending from the top portion providing a central recess and flexibility to the sleeve portion wall, the outer surface of said sleeve portion diverging downwardly from the top portion and diverging upwardly from the bottom end to provide an entrance guide for the insertion of the sleeve portion within an opening, and a shoulder below the peripheral edge of the top portion which permits the top portion to be readily grasped at said peripheral edge for the removal of the cap.
Claim 3
Dependent Claim
26 words
In an oil filler cap as recited in claim 1, wherein the upwardly diverging bottom surface is of greater slope than the downward diverging surface thereabove.
Claim 4
Dependent Claim
22 words
In an oil filler cap as recited in claim 2, wherein the cap is molded from an elastomer which is oil resistant.
Claim 5
Dependent Claim
59 words
In an oil filler cap as recited in claim 3, wherein the oil fill opening has its edge reversely formed to have an arcuate downwardly diverging surface which when engaged by the downwardly diverging surface of the sleeve portion forms a seal and provides a downward urge to the cap to retain it in sealed relation in the opening.
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) | 1974-11-29 | 1975-05-31 | 1975-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-29 | 1979-05-31 | 1979-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-29 | 1983-05-31 | 1983-11-30 | $7700.00 | Window Closed / Lapsed |