Patent US3892101A successfully refreshed from Google Patents.
US3892101A
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US
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Method of anchoring an anchoring bolt in a bore hole
Assignee: Gd Anker & Co KG GmbH
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Filing: 1973-06-25
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Granted: 1975-07-01
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Expires: 1993-06-25
Abstract
Abstract A method of anchoring an anchor bolt in a bore hole in which a fast-setting agent and cement mortar are introduced into the bore hole, which comprises the steps of filling the bore hole completely with cement mortar and introducing simultaneously with the cement mortar a container of a fast-setting agent in the end of said bore hole, and crushing the vessel by the insertion of an anchor bolt.
Inventors
- 👤 Rudolf Gruber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:47
CPC Classifications
C; C04; C04B; C04B40/00; C04B40/06; C04B40/0666; E; E21; E21D; E21D20/00; E21D20/02; E21D20/021; F; F16; F16B; F16B13/00; F16B13/14; F16B13/141; F16B13/143; F16B13/144; F16B13/145
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
200 words
A method of anchoring an anchor bolt having a pointed end in a bore hole having a bottom, comprising the steps of: a. filling a container of a frangible material with balls having a diameter at most equal to the difference between the radius of said bore hole and the radius of said bolt and with an agent capable of reacting with mortar to accelerate the hardening thereof; b. fitting a container into an end of a hose; c. inserting said hose into said bore hole substantially to the bottom thereof; d. forcing cement mortar activatable by said agent through said hose to drive said container out of the end of said hose against the bottom of said bore hole; e. gradually withdrawing said hose while continuing to force cement mortar therefrom, thereby completing filling the bore hole ahead of said container with said cement mortar; and f. driving said bolt into said bore hole through the cement mortar ahead of said container and into said container to rupture same and release said agent for reaction with said mortar and simultaneously release said balls, said pointed end of said bolt wedging said balls against the wall of said bore hole.
Claim 2
Independent Claim
200 words
A method of anchoring an anchor bolt having a pointed end in a bore hole having a bottom, comprising the steps of: a. filling a container of a frangible material with balls having a diameter at most equal to the difference between the radius of said bore hole and the radius of said bolt and with an agent capable of reacting with mortar to accelerate the hardening thereof; b. fitting a container into an end of a hose; c. inserting said hose into said bore hole substantially to the bottom thereof; d. forcing cement mortar activatable by said agent through said hose to drive said container out of the end of said hose against the bottom of said bore hole; e. gradually withdrawing said hose while continuing to force cement mortar therefrom, thereby completing filling the bore hole ahead of said container with said cement mortar; and f. driving said bolt into said bore hole through the cement mortar ahead of said container and into said container to rupture same and release said agent for reaction with said mortar and simultaneously release said balls, said pointed end of said bolt wedging said balls against the wall of said bore hole.
References Cited (Backward Citations)
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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) | 1978-06-30 | 1978-12-30 | 1979-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-30 | 1982-12-30 | 1983-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-30 | 1986-12-30 | 1987-07-01 | $7700.00 | Window Closed / Lapsed |