US4064053A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Strainer improvement
Assignee: Louis M Gerson Co Inc
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Filing: 1976-12-06
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Granted: 1977-12-20
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Expires: 1996-12-06
Abstract
Abstract A strainer blank comprises a flat sheet having a plurality of cutouts including a cutout adapted to define a strainer portion at the apex of a cone formed from the blank. Strainer material positioned over the cutouts defines a convex rear end at the apex which is folded during formation of the conical strainer to form a multi-ply elongated seam which adds strength and provides a surface area for adhesively uniting the strainer material.
Inventors
- 👤 Ronald L. Gerson
- 👤 Lawrence A. Caprio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:33
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/28
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
137 words
A paint strainer blank comprising a flat sheet body having a first end, a second end and configured to be folded into a generally conical strainer shape, said sheet body defining a plurality of cutouts including a cutout opening defined by said second end which forms a truncated portion of the conically folded sheet to define an apex portion of said generally conical strainer shape, a one-piece filter material overlying said flat sheet and covering said cutouts while being adhered to marginal portions thereof to form filter areas including a conical filter area at said apex portion, said material having a first end and a second end with said material second end defining a convex extension edge extending from said material second end at said apex portion and a corresponding concave portion at said material first end.
Claim 2
Dependent Claim
137 words
A paint strainer blank comprising a flat sheet body having a first end, a second end and configured to be folded into a generally conical strainer shape, said sheet body defining a plurality of cutouts including a cutout opening defined by said second end which forms a truncated portion of the conically folded sheet to define an apex portion of said generally conical strainer shape, a one-piece filter material overlying said flat sheet and covering said cutouts while being adhered to marginal portions thereof to form filter areas including a conical filter area at said apex portion, said material having a first end and a second end with said material second end defining a convex extension edge extending from said material second end at said apex portion and a corresponding concave portion at said material first end.
Claim 3
Dependent Claim
63 words
A paint strainer blank in accordance with claim 1 folded into said conical shape with a first portion of said sheet body second end overlapping a second portion of said sheet body second end and said convex extension edge being folded on itself at the apex portion and adhered to form a plural layered reinforced portion of a strainer at said apex portion.
Claim 4
Dependent Claim
24 words
A paint strainer blank in accordance with claim 2 wherein said convex extension edge and corresponding concave portion are of equal size and curvature.
Claim 5
Dependent Claim
34 words
A paint strainer blank in accordance with claim 3 wherein said convex extension edge extends beyond said sheet body second end and said sheet body is formed of a substantially paint impervious paper material.
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) | 1980-12-19 | 1981-06-20 | 1981-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-19 | 1985-06-20 | 1985-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-19 | 1989-06-20 | 1989-12-20 | $7700.00 | Window Closed / Lapsed |