Patent US3757528A successfully refreshed from Google Patents.
US3757528A
Expired / Lapsed
US
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Method for producing a bearing pile of reinforced concrete
Assignee: Walter Bau AG
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Filing: 1972-09-18
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Granted: 1973-09-11
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Expires: 1992-09-18
Abstract
Abstract Method for producing a bearing pile of steel reinforced concrete in a bore hole where armoring is placed in the bore hole which is filled with hardening material such as concrete and where the armoring is a steel pressure element of compact, particularly round cross-section provided with profiling on its surface to increase the adhesion between the filling material and where after setting, but prior to hardening the filling material is impregnated with cement sludge or grouting through an apertured conduit that is disposed between the steel pressure member and the wall of the bore hole.
Inventors
- 👤 U Finsterwalder
- 👤 K Finsterwalder
- 👤 T Herbst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:02
CPC Classifications
E; E02; E02D; E02D5/00; E02D5/22; E02D5/34; E02D5/36; E02D5/46; E02D5/62
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
133 words
Method for producing a bearing pile of steel reinforced concrete comprising the steps of producing a bore hole, placing into said bore hole armoring in the form of a steel pressure member having a compact, particularly round cross-section with profiling at its surface to increase the adhesion with filling material, placing compressing conduit in said bore hole between said steel pressure member and the walls of the bore hole, pouring filling material such as cement mortar into said bore hole around said steel pressure member and said compressing conduit, and after setting and before hardening of the filling material, forcing compression material, such as cement grouting or sludge, through said compressing conduit into the filling material to constitute a compressed body extending around and substantially over the length of the steel pressure member.
Claim 2
Dependent Claim
133 words
Method for producing a bearing pile of steel reinforced concrete comprising the steps of producing a bore hole, placing into said bore hole armoring in the form of a steel pressure member having a compact, particularly round cross-section with profiling at its surface to increase the adhesion with filling material, placing compressing conduit in said bore hole between said steel pressure member and the walls of the bore hole, pouring filling material such as cement mortar into said bore hole around said steel pressure member and said compressing conduit, and after setting and before hardening of the filling material, forcing compression material, such as cement grouting or sludge, through said compressing conduit into the filling material to constitute a compressed body extending around and substantially over the length of the steel pressure member.
Claim 3
Dependent Claim
19 words
Method in accordance with claim 1 where the filling material includes fibrous substances such as mineral or plastic fibers.
Claim 4
Dependent Claim
85 words
Bearing pile of steel reinforced concrete constructed in a bore hole comprising armoring in the form of a steel pressure member in said bore hole, said steel pressure member having compact, particularly round cross-section with profiling at its surface, a compressing conduit in said bore hole between said steel pressure member and the walls of the bore hole, filling material such as cement mortar disposed around said steel pressure member and said compressing conduit and said filling material having cement grouting or sludge injected therein.
Claim 5
Dependent Claim
85 words
Bearing pile of steel reinforced concrete constructed in a bore hole comprising armoring in the form of a steel pressure member in said bore hole, said steel pressure member having compact, particularly round cross-section with profiling at its surface, a compressing conduit in said bore hole between said steel pressure member and the walls of the bore hole, filling material such as cement mortar disposed around said steel pressure member and said compressing conduit and said filling material having cement grouting or sludge injected therein.
Claim 6
Dependent Claim
23 words
Bearing pile in accordance with claim 3 where said steel pressure member is an armoring rod having ribs disposed along a helical line.
Claim 7
Dependent Claim
21 words
Bearing pile in accordance with claim 4 having a pressure distributing plate mounted on the top of said steel pressure member.
Claim 8
Dependent Claim
15 words
Bearing pile in accordance with claim 3 where said steel pressure member comprises abutting sections.
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) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |