Patent US4561977A successfully refreshed from Google Patents.
US4561977A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Contractible fuel filter device
Assignee: Nissan Motor Co Ltd
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Filing: 1984-03-08
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Granted: 1985-12-31
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Expires: 2004-03-08
Abstract
Abstract A fuel filter device for use in a fuel tank, comprising an upper blank plate, a lower blank plate, a filter body having a filter portion fixed between the upper and lower blank plates, and at least one fuel suction pipe having a lower portion which is placed in the filter body, a fuel suction port being formed in a lower end portion of the fuel suction pipe characterized by the filter portion being flexible, the lower portion of the fuel suction pipe being foldable.
Inventors
- 👤 Michiaki Sasaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:54
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/11; B01D29/13; B01D29/15; B01D29/21; B01D29/213; B01D35/00; B01D35/02; B01D35/027; B01D35/26; B60; B60K; B60K15/00; B60K15/03; B60K15/077; F; F02; F02M; F02M37/00; F02M37/22; F02M37/24; F02M37/32; F02M37/50; B60K2015/03236; B60K2015/03328; B60K2015/03453; B60K2015/03467
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
99 words
A fuel filter device for use in a fuel tank comprising: a filter body having a top portion, a bottom portion adapted to be placed on the bottom of the fuel tank, and a contractible filter portion fixed between the top and bottom portions; and a fuel suction pipe having a contractible lower portion which is placed in the filter body and at least one fuel suction port formed in a lower end portion of the fuel suction pipe, said contractible filter portion and said contractible lower portion of the fuel suction pipe cooperating to absorb forces applied thereto.
Claim 2
Dependent Claim
99 words
A fuel filter device for use in a fuel tank comprising: a filter body having a top portion, a bottom portion adapted to be placed on the bottom of the fuel tank, and a contractible filter portion fixed between the top and bottom portions; and a fuel suction pipe having a contractible lower portion which is placed in the filter body and at least one fuel suction port formed in a lower end portion of the fuel suction pipe, said contractible filter portion and said contractible lower portion of the fuel suction pipe cooperating to absorb forces applied thereto.
Claim 3
Dependent Claim
20 words
The fuel filter device of claim 1 wherein said top and bottom portions comprise upper and lower blank plates, respectively.
Claim 4
Dependent Claim
23 words
The fuel filter device of claim 2 wherein the contractible lower portion of the fuel suction pipe is formed in a bellows shape.
Claim 5
Dependent Claim
35 words
The fuel filter device of claim 3 wherein the fuel suction pipe includes a lower fuel suction pipe including the lower portion and an upper fuel suction pipe joined to the lower fuel suction pipe.
Claim 6
Dependent Claim
23 words
The fuel filter device of claim 4 wherein the upper and lower blank plates are formed integral with the lower fuel suction pipe.
Claim 7
Dependent Claim
17 words
The fuel filter device of claim 2 wherein the filter portion is formed in a bellows shape.
Claim 8
Dependent Claim
36 words
The fuel filter device of claim 6 wherein a pair of upper and lower guide ribs are fixed to the upper and lower blank plates, respectively, so as to prevent the filter portion from deforming inwardly.
Claim 9
Dependent Claim
17 words
The fuel filter device of claim 2 wherein a magnet is attached to the lower blank plate.
Claim 10
Dependent Claim
18 words
The fuel filter device of claim 2 wherein a vent hole is formed in the upper blank plate.
Claim 11
Dependent Claim
24 words
The fuel filter device of claim 2 wherein a contractible rib is fixed between the upper and lower blank plates along the filter portion.
Claim 12
Dependent Claim
23 words
The fuel filter device of claim 1 wherein the fuel suction pipe is imperforate except for said at least one fuel suction port.
Claim 13
Dependent Claim
18 words
The fuel filter device of claim 11 wherein the at least one fuel suction port comprises one port.
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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) | 1988-12-30 | 1989-07-01 | 1989-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-30 | 1993-07-01 | 1993-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-30 | 1997-07-01 | 1997-12-31 | $7700.00 | Window Closed / Lapsed |