Patent US4257716A successfully refreshed from Google Patents.
US4257716A
Expired / Lapsed
US
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Roll-formed metal eavestroughing with plastic fittings
Assignee: GSW Inc
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Filing: 1979-02-05
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Granted: 1981-03-24
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Expires: 1999-02-05
Abstract
Abstract An eavestroughing system comprises a roll-formed sheet metal eavestrough in combination with plastic injection molded fitting therefor. The eavestrough has a compactly overturned longitudinally extending edge portion along each sidewall of a thickness substantially greater than the thickness of the metal in the trough. The support fitting is formed of semi-rigid plastic and has two spaced-apart clip portions adapted to receive the trough edge portions. The fitting has a body portion with an internal surface approximating the external shape of the trough to encompass same when the trough is clipped into and supported by the plastic fittings.
Inventors
- 👤 David G. Woodrow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:52
CPC Classifications
E; E04; E04D; E04D13/00; E04D13/04; E04D13/064; E04D13/0645; E04D13/0641; E04D13/0643; E04D13/068
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
91 words
In combination a roll-formed sheet metal eavestrough and a plastic injection molded support fitting therefor, said eavestrough having compactly overturned longitudinally extending edge portions of a thickness substantially greater than the thickness of the metal, said fitting being formed of semi-rigid plastic and having two spaced-apart clip portions to receive said through edge portions as they are snap-fitted into said clips, said fitting having a body portion with an internal surface approximating the external shape of said trough to encompass same with said trough clipped in and supported by said fitting.
Claim 2
Dependent Claim
91 words
In combination a roll-formed sheet metal eavestrough and a plastic injection molded support fitting therefor, said eavestrough having compactly overturned longitudinally extending edge portions of a thickness substantially greater than the thickness of the metal, said fitting being formed of semi-rigid plastic and having two spaced-apart clip portions to receive said through edge portions as they are snap-fitted into said clips, said fitting having a body portion with an internal surface approximating the external shape of said trough to encompass same with said trough clipped in and supported by said fitting.
Claim 3
Dependent Claim
12 words
In the combination of claim 1 said eavestrough having a semi-circular cross-section.
Claim 4
Dependent Claim
18 words
In the combination of claim 1 said eavestrough having a base portion with integral generally upwardly extending sidewalls.
Claim 5
Dependent Claim
46 words
In the combination of claim 3 said edge portion being overturned twice to place the raw edge within the overturned portion, the thickness of said overturned portion being substantially greater than the thickness of the metal by virtue of gaps between sections of the overturned portion.
Claim 6
Dependent Claim
24 words
In the combination of claim 4 said sidewalls being compound of a first outwardly and upwardly extending portion and a second essentially vertical portion.
Claim 7
Dependent Claim
76 words
In the combination of claim 1 said eavestrough having a base portion with integral generally upwardly extending sidewalls, said internal surface of the fitting body portion having a compressible sealant liner, said liner contacting the exterior of said trough clipped in said fitting as said liner is compressed by said trough, the arrangement being such that a sealed butt joint of trough sections is formed by each trough section end compressing a portion of said liner.
Claim 8
Dependent Claim
11 words
In the combination of claim 1 said metal eavestrough being prepainted.
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) | 1984-03-23 | 1984-09-22 | 1985-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-23 | 1988-09-22 | 1989-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-23 | 1992-09-22 | 1993-03-24 | $7700.00 | Window Closed / Lapsed |