Patent US4480470A successfully refreshed from Google Patents.
US4480470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas cap
Assignee: Individual
•
Filing: 1982-06-01
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Granted: 1984-11-06
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Expires: 2002-06-01
Abstract
Abstract A gas cap which incorporates an exposed indicator to disclose whether the tank contains fuel for a two-stroke or a four-stroke engine, and which further employs a tank-stored, graduated cylinder to permit precise preparation of a sufficient quantity of an uncontaminated fuel mixture to fill the tank for a two-stroke or a four-stroke engine.
Inventors
- 👤 Dennis M. Tussing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:57
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/04; B; B60; B60K; B60K15/00; B60K15/03; B60K15/04; B60K15/0406; F; F02; F02B; F02B75/00; F02B75/02; F02B2075/022; F02B2075/027
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
123 words
An improved sealing-cap for a fuel tank comprising, in combination: closure means having a removable closure for engaging said tank; measuring means having a graduate coupled to the tank-side of said closure for providing an oil-measuring receptacle; dipstick means in communication with said graduate for providing a measure of the quantity of gas required to fill said tank to a desired fuel mixture level; conversion means adjoining said dipstick means for providing a measure of the quantity of oil required to fill said tank to a desired fuel mixture level; indicator means coupled to said cap for indicating whether said tank contains an oil mixture; and vent means coupled to said cap for permitting the interior of said tank to be selectively vented.
Claim 2
Dependent Claim
123 words
An improved sealing-cap for a fuel tank comprising, in combination: closure means having a removable closure for engaging said tank; measuring means having a graduate coupled to the tank-side of said closure for providing an oil-measuring receptacle; dipstick means in communication with said graduate for providing a measure of the quantity of gas required to fill said tank to a desired fuel mixture level; conversion means adjoining said dipstick means for providing a measure of the quantity of oil required to fill said tank to a desired fuel mixture level; indicator means coupled to said cap for indicating whether said tank contains an oil mixture; and vent means coupled to said cap for permitting the interior of said tank to be selectively vented.
Claim 3
Dependent Claim
30 words
An improved cap in accord with claim 1, wherein said indicator means comprises a visual indicator coupled to said cap for indicating whether said fuel tank contains an oil mixture.
Claim 4
Dependent Claim
58 words
A cap in accord with claim 1, wherein said dipstick means in communication with said graduate comprises a visual indicia of the quantity of gas required to fill said tank to a desired fuel mixture level so that when said cap is removed from said tank said required quantity of gas can be read from said dipstick means.
Claim 5
Dependent Claim
46 words
A cap in accord with claim 3, wherein said conversion means adjoining said dipstick means comprises a visual indicia of the quantity of oil required to fill said tank to a desired fuel mixture level with a gas and oil mixture for a two stroke engine.
Claim 6
Dependent Claim
52 words
A cap in accord with claim 1, wherein said measuring means further includes said graduate having scale means in communication with said graduate for permitting a visual measurement of the oil to be added to a given quantity of gas in order to fill said tank to a desired fuel mixture level.
Claim 7
Dependent Claim
58 words
A cap in accord with claim 2, wherein said indicator means further comprises: said indicator means having a rotatable indicator coupled to said cap, said indicator having a triangular-shaped pointer and handles to facilitate changing its position; and said cap having indicia thereon so that the position of said indicator discloses whether said tank contains an oil mixture.
Claim 8
Dependent Claim
55 words
A cap in accord with claim 1, wherein said vent means comprises a vent sleeve coupled to said cap having internal threads for operably engaging a vent screw and for providing an air passage, and a vent screw having a flat portion on one side of its threaded shank thereby providing a sealable air passage.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-11-06 | 1988-05-07 | 1988-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-06 | 1992-05-07 | 1992-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-06 | 1996-05-07 | 1996-11-06 | $7700.00 | Window Closed / Lapsed |