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US3756388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resinous cartridges for securing fixing elements
Assignee: Fosroc International Ltd
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Filing: 1971-01-25
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Granted: 1973-09-04
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Expires: 1991-01-25
Abstract
Abstract For use in the production of resinous cartridges for securing fixing elements, a hardener component comprising a carrier material having disposed thereon and/or therein a hardener composition containing a hardener for the thermosetting resin present in the resinous cartridge.
Inventors
- 👤 J Murphy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:52
CPC Classifications
E; E21; E21D; E21D20/00; E21D20/02; E21D20/025; E21D20/026; B; B65; B65D; B65D81/00; B65D81/32; B65D81/3261; F; F16; F16B; F16B13/00; F16B13/14; F16B13/141; F16B13/143
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
156 words
A resinous cartridge suitable for use in the securing of fixing elements in oversized boreholes, comprising a frangible longitudinally extending casing having disposed lengthwise therein: a. a resin composition comprising an unsaturated polyester resin and a polymerizable monomer solvent in admixture with an inorganic filler therefor, and b. a hardener component comprising a longitudinally extending length of carrier material having substantially uniformly associated therewith a hardener composition comprising an organic peroxide, an organic plasticizer and optionally an inorganic filler, the resin composition and the hardener component being in direct physical contact with each other along substantially the entire physical length of the cartridge with the consequent formation at the interface between the resin composition and hardener component of a thin layer of cured polyester resin which prevents reaction between the polymerizable monomer solvent and the unsaturated polyester resin both present in the resin composition until in use the contents of the frangible cartridge are thoroughly mixed.
Claim 2
Dependent Claim
15 words
A cartridge as claimed in claim 2, wherein the carrier material is a textile yarn.
Claim 3
Dependent Claim
30 words
A cartridge as claimed in claim 3, wherein the textile yarn is formed from a plurality of continuous filaments or strands each of which is coated with the hardener composition.
Claim 4
Dependent Claim
26 words
A cartridge as claimed in claim 3, wherein the textile yarn is composed of filaments or strands of sisal, hemp, glass, asbestor or twisted tissue paper.
Claim 5
Dependent Claim
14 words
A cartridge as claimed in claim 5, wherein the textile yarn is asbestos string.
Claim 6
Dependent Claim
26 words
A cartridge as claimed in claim 2, wherein the carrier material is selected from foamed plastics strip, twisted plastics netting and twisted woven glass fibre tape.
Claim 7
Dependent Claim
15 words
A cartridge as claimed in claim 2, wherein the organic peroxide is an acyl peroxide.
Claim 8
Dependent Claim
14 words
A cartridge as claimed in claim 8, wherein the acyl peroxide is benzoyl peroxide.
Claim 9
Dependent Claim
26 words
A cartridge as claimed in claim 2, wherein the organic plasticizer is selected from chlorinated paraffinic hydrocarbons, diesters of phthalic and adipic acid, and organic phosphates.
Claim 10
Dependent Claim
15 words
A cartridge as claimed in claim 1, wherein the cured polyester resin is formed in-situ.
Claim 11
Independent Claim
119 words
A method of producing resinous cartridges suitable for use in the securing of fixing elements in oversized boreholes, which method comprises feeding into a length of frangible tubing; a. a hardener component comprising a longitudinally extending length of carrier material having substantially uniformly associated therewith a hardener composition comprising an organic peroxide, an organic plasticizer and optionally an inorganic filler, concomitantly with; b. a resin composition comprising an unsaturated polyester resin and a polymerizable monomer solvent in admixture with an inorganic filler therefor, in a manner such that a layer of the resin composition and the hardener component extend lengthwise inside the frangible tubing in contact with each other, and forming from the resulting filled tubing the resinous cartridges.
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) | 1976-09-03 | 1977-03-05 | 1977-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-03 | 1981-03-05 | 1981-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-03 | 1985-03-05 | 1985-09-04 | $7700.00 | Window Closed / Lapsed |