US5051175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drain guard
Assignee: OMG Building Products LLC
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Filing: 1989-12-20
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Granted: 1991-09-24
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Expires: 2009-12-20
Abstract
Abstract The invention includes a drain guard and drain protection system. The drain guard includes a cross-sectionally L-shaped frame having a base and an upstanding sidewall extending therefrom. The upstanding sidewall has a plurality of spaced openings. The base may also have a plurality of spaced openings in communication with the plurality of spaced upstanding sidewall openings positioned relative thereto. The frame is of substantially greater perimeter than the perimeter of the enclosed drain opening. The drain protection system includes a surface layer having ballast spread therealong, a drain opening extending through the surface layer, a portion of the surface layer cleared of ballast, the portion outwardly extending from the drain opening to a drain guard of the above-described type.
Inventors
- 👤 Thomas W. Walczak
- 👤 Robert M. Bennette
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:21
CPC Classifications
E; E04; E04D; E04D13/00; E04D13/04; E04D13/0404; E04D13/0409; E04D2013/0413; E04D13/0459; E04D2013/0472
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
84 words
A guard for a drain opening, said guard comprising: an uncovered frame having a substantially L-shaped cross-section formed of an elongated base and an upstanding elongated flat sidewall integral therewith, said upstanding sidewall having a plurality of spaced-apart openings extending therethrough, the openings of a first group of said plurality of spaced-apart openings being vertically offset from the respective openings of a second group of said plurality of spaced openings, and said frame having a greater perimeter than the perimeter of said drain opening.
Claim 2
Dependent Claim
84 words
A guard for a drain opening, said guard comprising: an uncovered frame having a substantially L-shaped cross-section formed of an elongated base and an upstanding elongated flat sidewall integral therewith, said upstanding sidewall having a plurality of spaced-apart openings extending therethrough, the openings of a first group of said plurality of spaced-apart openings being vertically offset from the respective openings of a second group of said plurality of spaced openings, and said frame having a greater perimeter than the perimeter of said drain opening.
Claim 3
Dependent Claim
30 words
A guard for a drain opening as defined in claim 1 wherein said openings of said first group are disposed in alternating relation with said openings of said second group.
Claim 4
Dependent Claim
35 words
A guard for a drain opening as defined in claim 2 wherein one of said groups of said plurality of spaced upstanding sidewall openings extend downwardly to the junction of said base and upstanding sidewall.
Claim 5
Dependent Claim
114 words
A drain protection system, comprising: a surface layer having ballast spread therealong, a drain opening extending through said surface layer, an uncovered drain guard frame surrounding said drain opening, said surface layer having a portion thereof cleared of said ballast, said portion extending from said drain opening to said drain guard frame, said drain guard frame including a substantially L-shaped cross-section formed of an elongated base and an upstanding elongated flat sidewall integral therewith, said upstanding sidewall having a plurality of spaced-apart openings extending therethrough, alternate ones of said plurality of spaced-apart openings being vertically offset from one another, said drain guard frame having a greater perimeter than the perimeter of said drain opening.
Claim 6
Dependent Claim
114 words
A drain protection system, comprising: a surface layer having ballast spread therealong, a drain opening extending through said surface layer, an uncovered drain guard frame surrounding said drain opening, said surface layer having a portion thereof cleared of said ballast, said portion extending from said drain opening to said drain guard frame, said drain guard frame including a substantially L-shaped cross-section formed of an elongated base and an upstanding elongated flat sidewall integral therewith, said upstanding sidewall having a plurality of spaced-apart openings extending therethrough, alternate ones of said plurality of spaced-apart openings being vertically offset from one another, said drain guard frame having a greater perimeter than the perimeter of said drain opening.
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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) | 1994-09-23 | 1995-03-25 | 1995-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-09-23 | 1999-03-25 | 1999-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-09-23 | 2003-03-25 | 2003-09-24 | $7700.00 | Window Closed / Lapsed |