US5589067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expanded metal filter support structure
Assignee: Jason Inc
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Filing: 1995-09-18
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Granted: 1996-12-31
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Expires: 2015-09-18
Abstract
Abstract A generally planar expanded metal filter media support structure is provided. The filter media support structure includes a first row of perforations mutually separated, one from another, by a perforation distance along a first axis parallel to the plane of the support structure and at least a second row of perforations parallel to the first row of perforations offset from the first row of perforations along the first axis by a first offset distance greater than zero and less than one-half the perforation distance and offset along a second orthogonal axis in the plane of the support structure by a second offset distance.
Inventors
- 👤 Patrick E. Rice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:24
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/11; B01D29/111; B01D29/13; B01D29/15; Y; Y10; Y10S; Y10S29/00; Y10S29/902; Y10T; Y10T29/00; Y10T29/18; Y10T29/49; Y10T29/496; Y10T29/49604
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
149 words
A filter media support structure comprising: a generally cylindrically shaped pleated shell with each pleat of the pleated shell aligned parallel to a longitudinal axis of the shell and distributed around a circumference of the shell to form a zig-Zag patterned outer wall of the pleated shell around a circumference of the shell, when viewed in cross-section; a first row of perforations parallel to the longitudinal axis in a planar element of each pleat of the pleated shell, mutually separated one from another by a perforation distance; and at least a second row of perforations parallel to the first row of perforations offset from the first row of perforations along the longitudinal axis by a first offset distance greater than zero and less than one-half the perforation distance and offset along a second orthogonal axis of the planar element transverse to the longitudinal axis by a second offset distance.
Claim 2
Dependent Claim
149 words
A filter media support structure comprising: a generally cylindrically shaped pleated shell with each pleat of the pleated shell aligned parallel to a longitudinal axis of the shell and distributed around a circumference of the shell to form a zig-Zag patterned outer wall of the pleated shell around a circumference of the shell, when viewed in cross-section; a first row of perforations parallel to the longitudinal axis in a planar element of each pleat of the pleated shell, mutually separated one from another by a perforation distance; and at least a second row of perforations parallel to the first row of perforations offset from the first row of perforations along the longitudinal axis by a first offset distance greater than zero and less than one-half the perforation distance and offset along a second orthogonal axis of the planar element transverse to the longitudinal axis by a second offset distance.
Claim 3
Dependent Claim
20 words
The apparatus as in claim 1 further comprising a filter media disposed on a first side of the support structure.
Claim 4
Dependent Claim
16 words
The apparatus as in claim 1 wherein the filter media support structure further comprises expanded metal.
Claim 5
Dependent Claim
17 words
The apparatus as in claim 1 wherein the filter media support structure further comprises tin-coated carbon steel.
Claim 6
Dependent Claim
16 words
The apparatus as in claim 1 wherein the filter media support structure further comprises stainless steel.
Claim 7
Dependent Claim
15 words
The apparatus as in claim 1 wherein the filter media support structure further comprises aluminum.
Claim 8
Dependent Claim
194 words
A fluid filter comprising: a flange with inlet and outlet connections for a filtered fluid of the fluid filter disposed on a first side of the flange in fluid connection with an inlet and outlet port on a second side of the flange; a pressure vessel disposed on a second side of the flange enclosing both inlet and outlet ports; a generally cylindrically shaped pleated shell disposed on the second side of the flange within the pressure vessel with a wall of the pleated shell separating the inlet and outlet ports, the pleated shell having a first row of perforations in a planar surface element of the pleated shell parallel to a longitudinal axis of the pleated shell mutually separated, one from another, by a perforation distance along the longitudinal axis and at least a second row of perforations parallel to the first row of perforations offset from the first row of perforations along the longitudinal axis by a first offset distance greater than zero and less than one-half the perforation distance and offset along a second orthogonal axis of the planar surface element transverse to the longitudinal axis by a second offset distance.
Claim 9
Dependent Claim
194 words
A fluid filter comprising: a flange with inlet and outlet connections for a filtered fluid of the fluid filter disposed on a first side of the flange in fluid connection with an inlet and outlet port on a second side of the flange; a pressure vessel disposed on a second side of the flange enclosing both inlet and outlet ports; a generally cylindrically shaped pleated shell disposed on the second side of the flange within the pressure vessel with a wall of the pleated shell separating the inlet and outlet ports, the pleated shell having a first row of perforations in a planar surface element of the pleated shell parallel to a longitudinal axis of the pleated shell mutually separated, one from another, by a perforation distance along the longitudinal axis and at least a second row of perforations parallel to the first row of perforations offset from the first row of perforations along the longitudinal axis by a first offset distance greater than zero and less than one-half the perforation distance and offset along a second orthogonal axis of the planar surface element transverse to the longitudinal axis by a second offset distance.
Claim 10
Dependent Claim
26 words
The apparatus as in claim 7 further comprising a filter media disposed on a first side of the filter media support structure facing the pressure vessel.
Claim 11
Dependent Claim
16 words
The apparatus as in claim 7 wherein the filter media support structure further comprises expanded metal.
Claim 12
Dependent Claim
17 words
The apparatus as in claim 7 wherein the filter media support structure further comprises tin-coated carbon steel.
Claim 13
Dependent Claim
16 words
The apparatus as in claim 7 wherein the filter media support structure further comprises stainless steel.
Claim 14
Dependent Claim
15 words
The apparatus as in claim 7 wherein the filter media support structure further comprises aluminum.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-12-31 | 2000-07-01 | 2000-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-12-31 | 2004-07-01 | 2004-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-12-31 | 2008-07-01 | 2008-12-31 | $7700.00 | Window Closed / Lapsed |