Patent US5399050A successfully refreshed from Google Patents.
US5399050A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic concrete form for footers
Assignee: Individual
•
Filing: 1993-07-06
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Granted: 1995-03-21
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Expires: 2013-07-06
Abstract
Abstract A thermoplastic sidewall forms one surface of a concrete form. The sidewall incorporates a drainage tile as an integral unit. Two of the sidewalls combined can provide a form for a concrete footer to be poured and remain as a permanent part of the structure.
Inventors
- 👤 James L. Jacobus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:42
CPC Classifications
E; E04; E04F; E04F17/00; E02; E02D; E02D27/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
159 words
The combination of a concrete floor, a concrete support wall mounted on the upper surface of a concrete footer, a pair of sidewalls to define the shape of said footer and a hollow drainage tile, comprising, said floor having an upper surface and a lower surface, said concrete footer having side surfaces, upper and lower surfaces, a length, a width and a depth, said lower footer surface being supported on a substrate, said pair of sidewalls each having a planer surface in contact with a footer side surface, said sidewalls being located below the lower surface of said floor, said hollow drainage tile being formed by extrusion as a single unit with at least one of said sidewalls, said drainage tile extending parallel with and at the same elevation as said footer side surfaces, apertures extending through the surface of said drainage tile to allow water to enter said tile and be drained from the environment adjacent said footer.
Claim 2
Dependent Claim
159 words
The combination of a concrete floor, a concrete support wall mounted on the upper surface of a concrete footer, a pair of sidewalls to define the shape of said footer and a hollow drainage tile, comprising, said floor having an upper surface and a lower surface, said concrete footer having side surfaces, upper and lower surfaces, a length, a width and a depth, said lower footer surface being supported on a substrate, said pair of sidewalls each having a planer surface in contact with a footer side surface, said sidewalls being located below the lower surface of said floor, said hollow drainage tile being formed by extrusion as a single unit with at least one of said sidewalls, said drainage tile extending parallel with and at the same elevation as said footer side surfaces, apertures extending through the surface of said drainage tile to allow water to enter said tile and be drained from the environment adjacent said footer.
Claim 3
Dependent Claim
58 words
The combination of claim 1 wherein said drainage tile extends along and at the same elevation as said one footer side surface, a plurality of reinforcing brackets engaging both said one wall and said drainage tile surface to maintain the structural integrity of said footer during the time fluid concrete is being poured and until said concrete sets.
Claim 4
Dependent Claim
39 words
The combination of claim 2 including a plurality of hollow ducts extending vertically along each sidewall to receive a stake which may be driven into said substrate to assist in maintaining said sidewalls in proper vertical and horizontal location.
Claim 5
Dependent Claim
27 words
The combination of claim 3 including a plurality of strengthening bars bridging across said footer and attached to said sidewalls to prevent sidewall deflection during concrete pouring.
Claim 6
Dependent Claim
22 words
The combination of claim 4 wherein at least some of said bars are hollow to allow liquid drainage from between said sidewalls.
Claim 7
Dependent Claim
20 words
The combination of claim 5 wherein said bars are embedded in said footer near both its upper and lower surfaces.
Claim 8
Dependent Claim
27 words
The combination of claim 1 including a plurality of strengthening bars bridging across said footer and attached to said sidewalls to prevent sidewall deflection during concrete pouring.
Claim 9
Dependent Claim
22 words
The combination of claim 7 wherein at least some of said bars are hollow to allow liquid drainage from between said sidewalls.
Claim 10
Dependent Claim
20 words
The combination of claim 8 wherein said bars are embedded in said footer near both its upper and lower surfaces.
Claim 11
Dependent Claim
23 words
The combination of claim 1 wherein at least some of the aperture means are located at the lowest level of said drainage tile.
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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) | 1998-03-20 | 1998-09-19 | 1999-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-03-20 | 2002-09-19 | 2003-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-03-20 | 2006-09-19 | 2007-03-21 | $7700.00 | Window Closed / Lapsed |