Patent US4617121A successfully refreshed from Google Patents.
US4617121A
Expired / Lapsed
US
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In-tank pump filter for automobile fuel tank
Assignee: Nitco Inc
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Filing: 1985-09-04
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Granted: 1986-10-14
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Expires: 2005-09-04
Abstract
Abstract A filter for in-tank pump use, comprising a tubular filter which incorporates an auxiliary tubular member provided, via a hollow head member, on the fuel inlet of the in-tank pump in a fuel tank, such as that of an automobile, the auxiliary tubular member having a downward-facing opening positioned below the level of the in-tank pump inlet. In substance there is thereby formed an inlet that is lower than the in-tank pump inlet, which makes it possible to effectively maximize the amount of fuel that can be drawn from the tank.
Inventors
- 👤 Naoshi Yokoyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:28
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/26; B01D29/00; B01D29/11; B01D29/13; B01D29/15; B01D35/02; B01D35/027; B01D35/0273; F; F02; F02M; F02M37/00; F02M37/22; F02M37/32; F02M37/50
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
166 words
A filter comprising: means for enabling use in a fuel tank in combination with a vertically downwardly facing inlet of an in-tank pump of an automobile, including a flat hollow head member including on one end thereof a tubular attachment portion for connection to a vertically downwardly facing inlet of an in-tank pump and at the other end thereof a horizontal opening; a flat auxiliary tubular member including a flange with an engaging portion at one end thereof for engaging said head member around said horizontal opening, said auxiliary tubular member including at its other end a downwardly facing opening which opens below the level of a lower edge of the tubular attachment portion of the hollow head member; and a flat tubular filter member having a mesh surrounding the auxiliary tubular member and including a flange at one end thereof abutting said first mentioned flange, said second mentioned flange including an inset receiving a portion of said first mentioned flange of the auxiliary tubular member.
Claim 2
Dependent Claim
166 words
A filter comprising: means for enabling use in a fuel tank in combination with a vertically downwardly facing inlet of an in-tank pump of an automobile, including a flat hollow head member including on one end thereof a tubular attachment portion for connection to a vertically downwardly facing inlet of an in-tank pump and at the other end thereof a horizontal opening; a flat auxiliary tubular member including a flange with an engaging portion at one end thereof for engaging said head member around said horizontal opening, said auxiliary tubular member including at its other end a downwardly facing opening which opens below the level of a lower edge of the tubular attachment portion of the hollow head member; and a flat tubular filter member having a mesh surrounding the auxiliary tubular member and including a flange at one end thereof abutting said first mentioned flange, said second mentioned flange including an inset receiving a portion of said first mentioned flange of the auxiliary tubular member.
Claim 3
Dependent Claim
91 words
The in-tank pump filter of claim 3 wherein said horizontal opening of the hollow head member is fitted into place around the periphery of the engaging portion of the auxiliary tubular member and the inset of the tubular filter member is fitted into place around the periphery of the flange of the auxiliary tubular member, thereby bringing the end face of said horizontal opening into abutment with the inset of the tubular filter member to consolidate the hollow head member, auxiliary tubular member and tubular filter member into a single unit.
References Cited (Backward Citations)
US3900397A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-10-13 | 1990-04-14 | 1990-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-10-13 | 1994-04-14 | 1994-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-10-13 | 1998-04-14 | 1998-10-14 | $7700.00 | Window Closed / Lapsed |