US3708146A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for encasing rigid members with concrete
Assignee: CONSTRUCTION TECHNIQUES INC US
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Filing: 1970-12-07
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Granted: 1973-01-02
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Expires: 1990-12-07
Abstract
Abstract A flexible sleeve of a larger circumference than the member to be encased is fastened at its lower end tightly around the member. The upper end of the sleeve has a rigid hoop of a circumference larger than the member and means are provided for placing the sleeve under longitudinal tension. A cementitious grout of a high water cement ratio is then poured into the open upper end of the sleeve. If the sleeve is porous, the water of the grout will bleed through the pores and the water-cement ratio will be lowered. The now thickened grout is then allowed to harden. The sleeve may then be removed by opening a longitudinal extending seam which is usually a zipper and reused.
Inventors
- 👤 B Lamberton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:57
CPC Classifications
E; E02; E02D; E02D5/00; E02D5/22; E02D5/60; E02D5/64
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
61 words
A form for encasing vertical columns with concrete comprising a sheet of material having cooperating zippErs along the vertical edges, a tube at the lower edge and a tie rope in said tube, a rigid hoop member and a tube at the upper edge adapted to receive said hoop member whereby said form is held in spaced relationship to said column.
Claim 2
Dependent Claim
61 words
A form for encasing vertical columns with concrete comprising a sheet of material having cooperating zippErs along the vertical edges, a tube at the lower edge and a tie rope in said tube, a rigid hoop member and a tube at the upper edge adapted to receive said hoop member whereby said form is held in spaced relationship to said column.
Claim 3
Dependent Claim
23 words
The form of claim 1 wherein said tie rope exits from said tube so as to extend over the outside of said zipper.
Claim 4
Dependent Claim
67 words
Apparatus for encasing a vertical column with concrete comprising an elongated sleeve of fabric material, means at the lower end for fastening said sleeve around and against a column to be encased, means at the upper end for holding the upper end of said sleeve in spaced relationship to the column, and means extending upwardly from said spacing means for supporting the upper end of said sleeve.
Claim 5
Dependent Claim
67 words
Apparatus for encasing a vertical column with concrete comprising an elongated sleeve of fabric material, means at the lower end for fastening said sleeve around and against a column to be encased, means at the upper end for holding the upper end of said sleeve in spaced relationship to the column, and means extending upwardly from said spacing means for supporting the upper end of said sleeve.
Claim 6
Dependent Claim
15 words
Apparatus of claim 3 wherein said sleeve has a vertically extending zipper joining separable edges.
Claim 7
Dependent Claim
18 words
Apparatus of claim 3 wherein said upwardly extending means includes means for placing said sleeve under longitudinal tension.
Claim 8
Dependent Claim
49 words
Apparatus of claim 4 wherein said zipper extends to the lower edge of said sleeve said fastening means is in the form of a tension member in a tube formed in the lower end of the sleeve which member exits the tube adjacent to and extends over the zipper.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-02 | 1976-07-03 | 1977-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-02 | 1980-07-03 | 1981-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-02 | 1984-07-03 | 1985-01-02 | $7700.00 | Window Closed / Lapsed |