Patent US3989155A successfully refreshed from Google Patents.
US3989155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Invertable fuel tank
Assignee: Lawrence Peska Associates Inc
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Filing: 1976-02-06
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Granted: 1976-11-02
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Expires: 1996-02-06
Abstract
Abstract A tank body has groups of threaded apertures through the wall of the tank arranged in identical patterns on top and bottom portions thereof. A filler pipe, gauge, vent and outlet pipe may be installed in the apertures on either the top or bottom of the tank for allowing the tank to be utilized in either an upright or inverted orientation. Removable plugs are provided for unused apertures and threaded sockets are formed on the top and bottom portions for selectively receiving legs.
Inventors
- 👤 Richard H. Conklin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:34
CPC Classifications
B; B65; B65D; B65D88/00; B65D88/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
An invertable fuel tank comprising: a tank body having top and bottom portions; a first group of threaded apertures through the wall of said tank on said top portion for operatively receiving a filler pipe, vent and guage, said first group of apertures being arranged in a predetermined pattern; a second group of threaded apertures through the wall of said tank on said bottom portion also being arranged in said predetermined pattern, one aperture of said second group being located for receiving an outlet pipe; removable plug means for unused apertures of said first and second groups; a plurality of legs; and first and second groups of sockets respectively carried by said top and bottom sides for removably receiving said legs whereby said tank may be utilized in either an upright or inverted orientation.
Claim 2
Dependent Claim
134 words
An invertable fuel tank comprising: a tank body having top and bottom portions; a first group of threaded apertures through the wall of said tank on said top portion for operatively receiving a filler pipe, vent and guage, said first group of apertures being arranged in a predetermined pattern; a second group of threaded apertures through the wall of said tank on said bottom portion also being arranged in said predetermined pattern, one aperture of said second group being located for receiving an outlet pipe; removable plug means for unused apertures of said first and second groups; a plurality of legs; and first and second groups of sockets respectively carried by said top and bottom sides for removably receiving said legs whereby said tank may be utilized in either an upright or inverted orientation.
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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) | 1979-11-02 | 1980-05-03 | 1980-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-02 | 1984-05-03 | 1984-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-02 | 1988-05-03 | 1988-11-02 | $7700.00 | Window Closed / Lapsed |