US3729614A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for accelerating the setting of concrete
Assignee: Individual
•
Filing: 1971-02-10
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Granted: 1973-04-24
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Expires: 1991-02-10
Abstract
Abstract A device for accelerating the setting of concrete elements wherein as well as heating the surface of the concrete, water is supplied to said surface with a view to obtaining a suitable degree of humidity in contact with said surface during setting, for which purpose a blanket is used which covers all or part of the surface of the concrete, said blanket having an internal electrical heating element, porous material linings and water conduction means which pass through the interior and supply water to the blanket which distributes the water, in liquid or vapor form, over the surface covered.
Inventors
- 👤 C Martinet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:12
CPC Classifications
C; C04; C04B; C04B40/00; C04B40/02; C04B40/0263; B; B28; B28B; B28B11/00; B28B11/24; B28B11/245
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
123 words
In a device to accelerate the setting of concrete members by the application of thermal treatment means consisting of an electric heating blanket having a metallic cloth acting as electrical heating element situated between a rear covering sheet and a front covering sheet applied over the surface of the concrete member, the improvement comprising; the combination therewith of conduction means allowing for the supply of water to the interior of the heating blanket, porous material linings situated inside the blanket occupying a substantial part of its extension and suitable for being impregnated with water, an impermeable rear covering sheet and a front covering sheet that is suitable for allowing the water to pass from the interior of the blanket to the concrete members.
Claim 2
Dependent Claim
123 words
In a device to accelerate the setting of concrete members by the application of thermal treatment means consisting of an electric heating blanket having a metallic cloth acting as electrical heating element situated between a rear covering sheet and a front covering sheet applied over the surface of the concrete member, the improvement comprising; the combination therewith of conduction means allowing for the supply of water to the interior of the heating blanket, porous material linings situated inside the blanket occupying a substantial part of its extension and suitable for being impregnated with water, an impermeable rear covering sheet and a front covering sheet that is suitable for allowing the water to pass from the interior of the blanket to the concrete members.
Claim 3
Dependent Claim
18 words
Device according to claim 1 wherein the porous material linings consist of laminar bands of synthetic resin foam.
Claim 4
Dependent Claim
12 words
Device according to claim 1 wherein the front covering sheet has orifices.
Claim 5
Dependent Claim
16 words
Device according to claim 1 wherein the front covering sheet is made from water permeable material.
Claim 6
Dependent Claim
47 words
Device according to claim 1 wherein the heating blanket is subdivided into a series of parallel sectors and the water conduction means consist of at least one transverse conduit which crosses the different parallel sectors and is in communication with the porous material linings in said sectors.
Claim 7
Dependent Claim
56 words
Device according to claim 5 wherein said water conduction means are arranged following a zig-zag route allowing said conduits to cross each of said parallel sectors lengthwise in the mid portion of each of said sectors and wherein the corresponding lengthwise portions of each said conduits communicate respectively with the porous material linings in said sectors.
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) | 1976-04-23 | 1976-10-23 | 1977-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-23 | 1980-10-23 | 1981-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-23 | 1984-10-23 | 1985-04-24 | $7700.00 | Window Closed / Lapsed |