US4179861A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of anchoring a borehole anchor
Assignee: Fosroc AG
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Filing: 1978-08-11
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Granted: 1979-12-25
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Expires: 1998-08-11
Abstract
Abstract A method of anchoring an anchor element in a borehole comprises supplying self-setting composition into a sleeve while withdrawing the sleeve so that the self-setting composition fills the annular clearance between the element and the wall of the hole. Preferably the element is first secured within the hole by a self-setting resinous composition and, in order to provide additional corrosion protection for the element, the end portion of the element has a precast sleeve, and a plastics sheath is heat-shrunk on to the remaining portion of the element.
Inventors
- 👤 John V. Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:08
CPC Classifications
E; E21; E21D; E21D21/00; E21D21/0093; E21D20/00; E21D20/02; E21D21/0013; F; F16; F16B; F16B13/00; F16B13/14; F16B13/141; F16B33/00; F16B33/008
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
88 words
A method of anchoring an anchor element in a hole in a substrate, which comprise placing an end portion of the anchor element in the hole, locating about the element a sleeve dimensioned to leave an annular clearance between the element and the inner surface of the sleeve, securing the element in the hole and then supplying self-setting composition into the sleeve while withdrawing the sleeve from the hole so as to fill the annular clearance between the element and the wall of the hole with self-setting composition.
Claim 2
Independent Claim
88 words
A method of anchoring an anchor element in a hole in a substrate, which comprise placing an end portion of the anchor element in the hole, locating about the element a sleeve dimensioned to leave an annular clearance between the element and the inner surface of the sleeve, securing the element in the hole and then supplying self-setting composition into the sleeve while withdrawing the sleeve from the hole so as to fill the annular clearance between the element and the wall of the hole with self-setting composition.
Claim 3
Dependent Claim
38 words
A method according to claim 1, in which the anchor element is first secured within the hole using a relatively quick self-setting composition in a cartridge and the element is rotated within the hole to rupture the cartridge.
Claim 4
Dependent Claim
27 words
A method according to claim 1, in which a precast sleeve is located about the end portion of the element adjacent the blind end of the hole.
Claim 5
Dependent Claim
38 words
A method according to claim 1 wherein the element has a corrosion resistant sheath or at least part of its length, which sheath is liable to be damaged by the rough nature of the wall of the hole.
Claim 6
Dependent Claim
23 words
A method according to claim 4, in which the corrision resistant sheath is heat-shrunk on to at least a portion of the element.
Claim 7
Dependent Claim
16 words
A method according to claim 4, in which the corrosion resistant sheath is a plastic film.
Claim 8
Dependent Claim
34 words
A method according to claim 1, in which the sleeve withdrawn from the hole during introduction of the self-setting composition is formed of a plastic material and has relatively smooth inner and outer surfaces.
References Cited (Backward Citations)
US3283513A
Cited
US3430449A
Cited
GB1170610A
Cited
GB1266152A
Cited
US3892101A
Cited
US3973409A
Cited
US4124983A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-12-24 | 1983-06-25 | 1983-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-24 | 1987-06-25 | 1987-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-24 | 1991-06-25 | 1991-12-25 | $7700.00 | Window Closed / Lapsed |