US4874272A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cantilever retaining wall system using discrete precast facing panels
Assignee: REINFORCED EARTH COMPANY A CORP OF
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Filing: 1987-11-09
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Granted: 1989-10-17
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Expires: 2007-11-09
Abstract
Abstract An improved cantilever retaining wall is comprised of a combination of precast wall panels that are interconnected in a pattern to form a planar vertical wall structure for supporting fill. Each of the wall panels includes a preform on one side thereof. Various preforms are aligned when the panels are erected for receipt of a cast in place or precast vertical beam member. In a preferred embodiment, a structural footing is provided for support of the panels.
Inventors
- 👤 Philip D. Egan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:47
CPC Classifications
E; E02; E02D; E02D29/00; E02D29/02; E02D29/0258; E02D29/0283
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
173 words
An improved cantilever type, retaining wall for retention of fill, said wall comprising, in combination: a plurality of preformed wall panels forming in combination a vertical, generally planar retaining structure for supporting the fill behind said wall panels; said panels defining a repeating mosaic pattern and each panel including a facing portion and in integral, cantilever beam, an enclosed preform projecting from a back side of each panel, said panels arranged in the mosaic with the preforms of vertically adjacent panels aligned to define a preform mold passage extending the height of vertically adjacent panels; a plurality of vertical beam members aligned at the backside of the wall panels, said members each defining a generally vertical cantilever beam that is cast in place and formed by the preforms; means for mechanically connecting each of the cast in place beam between adjacent preforms comprising reinforcing members retained within the preform and extending vertically between adjacent preforms prior to forming the cast in place beam; and wall panel fill against the backside of the panels.
Claim 2
Dependent Claim
173 words
An improved cantilever type, retaining wall for retention of fill, said wall comprising, in combination: a plurality of preformed wall panels forming in combination a vertical, generally planar retaining structure for supporting the fill behind said wall panels; said panels defining a repeating mosaic pattern and each panel including a facing portion and in integral, cantilever beam, an enclosed preform projecting from a back side of each panel, said panels arranged in the mosaic with the preforms of vertically adjacent panels aligned to define a preform mold passage extending the height of vertically adjacent panels; a plurality of vertical beam members aligned at the backside of the wall panels, said members each defining a generally vertical cantilever beam that is cast in place and formed by the preforms; means for mechanically connecting each of the cast in place beam between adjacent preforms comprising reinforcing members retained within the preform and extending vertically between adjacent preforms prior to forming the cast in place beam; and wall panel fill against the backside of the panels.
Claim 3
Dependent Claim
22 words
The wall of claim 1 including a generally horizontal footing, with said beams each connected to and projecting upward from the footing.
Claim 4
Dependent Claim
22 words
The wall of claim 1 including a footing which underlies the panels, the cantilever beams and, at least in part, the fill.
Claim 5
Independent Claim
83 words
A method of construction of a cantilever wall comprising the steps of: forming a generally horizontal footing; positioning a plurality of discrete preformed wall panels on the footing to define a vertical wall, said panels including integral, enclosed preforms projecting from a face to define a plurality of vertical cantilever beam mold form passages between vertically adjacent panels on the backside of said panels; casting in place reinforced, vertical cantilever beams in the mold preform passages; and back filling behind the vertical wall.
Claim 6
Independent Claim
83 words
A method of construction of a cantilever wall comprising the steps of: forming a generally horizontal footing; positioning a plurality of discrete preformed wall panels on the footing to define a vertical wall, said panels including integral, enclosed preforms projecting from a face to define a plurality of vertical cantilever beam mold form passages between vertically adjacent panels on the backside of said panels; casting in place reinforced, vertical cantilever beams in the mold preform passages; and back filling behind the vertical wall.
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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) | 1992-10-16 | 1993-04-17 | 1993-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-16 | 1997-04-17 | 1997-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-16 | 2001-04-17 | 2001-10-17 | $7700.00 | Window Closed / Lapsed |