US5047148A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retained wire filter element
Assignee: Arai Corp
•
Filing: 1990-04-24
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Granted: 1991-09-10
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Expires: 2010-04-24
Abstract
Abstract A filter element for filter systems, which comprises a plurality of plate members having a number of apertures therethrough and cutout grooves formed in the surface thereof, a plurality of wire members each having a retaining leg portion, which is inserted into one of the grooves of the plate member, whereby the top surfaces of the wire members are flashed in a definite plane for forming a plurality of slits for filtering a liquid.
Inventors
- 👤 Koichi Arai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 00:32
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/01; B01D29/05; B01D29/44; B01D29/445; Y; Y10; Y10S; Y10S29/00; Y10S29/077; Y10T; Y10T29/00; Y10T29/49; Y10T29/496; Y10T29/49604
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
73 words
A filter element including, in combination: a) a plurality of filter wire members each having a definite cross-section and a retaining portion; b) a plate member having a plurality of apertures formed therein, and having a plurality of longitudinal grooves formed in the top surface thereof; and c) a plurality of longitudinal filtering slits formed by said plurality of filter wire members being retained in said longitudinal grooves by said retaining portions thereof.
Claim 2
Dependent Claim
73 words
A filter element including, in combination: a) a plurality of filter wire members each having a definite cross-section and a retaining portion; b) a plate member having a plurality of apertures formed therein, and having a plurality of longitudinal grooves formed in the top surface thereof; and c) a plurality of longitudinal filtering slits formed by said plurality of filter wire members being retained in said longitudinal grooves by said retaining portions thereof.
Claim 3
Dependent Claim
18 words
The device defined in claim 1, wherein said apertures in said plate member are provided between said grooves.
Claim 4
Dependent Claim
20 words
The device defined in claim 2, wherein the top surface of said filter wire members form a smooth filtering surface.
Claim 5
Dependent Claim
34 words
The device defined in claim 1, and further including a rim at each lateral extremity of said plate member, the height of said rims being equal to the height of said filter wire members.
Claim 6
Dependent Claim
12 words
The device defined in claim 1, wherein said definite cross-section is circular.
Claim 7
Dependent Claim
12 words
The device defined in claim 1, wherein said definite cross-section is triangular.
Claim 8
Dependent Claim
12 words
The device defined in claim 1, wherein said definite cross-section is trapezoidal.
Claim 9
Dependent Claim
117 words
A filter element including, in combination: a) a plate member having a plurality of apertures formed therein and having a plurality of longitudinal grooves formed in the top surface thereof, said longitudinal grooves having a broadened portion provided at the bottom thereof; b) a plurality of filter wire members each having a definite cross-section, each of said wire members having a retaining legs formed thereon, each of said retaining legs having provided with an enlarged portion complimentary in shape to said broadened portion of said longitudinal grooves; c) a plurality of longitudinal filtering slits formed by said plurality of filter wire members being retained in said longitudinal grooves by said retaining legs of said filter wire members.
Claim 10
Dependent Claim
117 words
A filter element including, in combination: a) a plate member having a plurality of apertures formed therein and having a plurality of longitudinal grooves formed in the top surface thereof, said longitudinal grooves having a broadened portion provided at the bottom thereof; b) a plurality of filter wire members each having a definite cross-section, each of said wire members having a retaining legs formed thereon, each of said retaining legs having provided with an enlarged portion complimentary in shape to said broadened portion of said longitudinal grooves; c) a plurality of longitudinal filtering slits formed by said plurality of filter wire members being retained in said longitudinal grooves by said retaining legs of said filter wire members.
Claim 11
Dependent Claim
14 words
The device defined in claim 8, wherein said apertures are provided between said grooves.
Claim 12
Dependent Claim
19 words
The device defined in claim 9, wherein the top surfaces of said filter wire members provide a smooth surface.
Claim 13
Dependent Claim
12 words
The device defined in claim 9, wherein said definite cross-section is triangular.
Claim 14
Dependent Claim
12 words
The device defined in claim 9, wherein said definite cross-section is circular.
Claim 15
Dependent Claim
21 words
The device defined in claim 9, wherein the shape of said definite filter wire member is that of an inverted trapezoid.
Claim 16
Dependent Claim
20 words
The device defined in claim 8, wherein said plate member is provided with a rim at one lateral extremity thereof.
Claim 17
Dependent Claim
22 words
The device defined in claim 14, wherein the height of said rim is equal to the height of said filter wire members.
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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) | 1994-09-09 | 1995-03-11 | 1995-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-09-09 | 1999-03-11 | 1999-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-09-09 | 2003-03-11 | 2003-09-10 | $7700.00 | Window Closed / Lapsed |