US3604324A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curing blanket and machine
Assignee: Individual
•
Filing: 1969-02-06
•
Granted: 1971-09-14
•
Expires: 1989-02-06
Abstract
Abstract A flexible concrete curing blanket of indefinite length is provided with tubes along its sides. The tubes are filled with water to weight and thus hold the blanket down. A self-propelled machine lays the blanket down on top of freshly poured concrete, the machine takes the blanket up when the concrete has cured.
Inventors
- 👤 William F Middlestadt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:58
CPC Classifications
E; E01; E01C; E01C23/00; E01C23/03
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
110 words
A machine for laying down and taking up flexible webs of indefinite length, said machine including, a. a frame having wheel means, b. said frame having means to rotate and support a web supply spool, c. a nozzle and air energizing means therefor carried by the frame for directing air adjacent a web, d. means carried by the frame for moving the frame along a path, e. said nozzle having its air blowing direction parallel to a plane defined by lower surfaces of the said wheel means, f. said nozzle having its air blowing direction the same as the intended direction of frame travel as defined by said wheel means.
Claim 2
Dependent Claim
110 words
A machine for laying down and taking up flexible webs of indefinite length, said machine including, a. a frame having wheel means, b. said frame having means to rotate and support a web supply spool, c. a nozzle and air energizing means therefor carried by the frame for directing air adjacent a web, d. means carried by the frame for moving the frame along a path, e. said nozzle having its air blowing direction parallel to a plane defined by lower surfaces of the said wheel means, f. said nozzle having its air blowing direction the same as the intended direction of frame travel as defined by said wheel means.
Claim 3
Dependent Claim
45 words
The machine of claim 1 including, a. an exhaust conduit having one end coupled to the said nozzle energizing means and having its other end positioned to discharge air generally downwardly, such downward discharge adapted to smooth down a web being laid by the machine.
Claim 4
Dependent Claim
40 words
The machine of claim 1 including a. means carried by said frame for brushing a web fed from a supply spool over the web surfaces, said means defined by at least one rotary brush adapted to tangentially contact a web.
Claim 5
Independent Claim
66 words
A method of removing a generally imperforate web of indefinite length from the top surface of a hardened concrete slab, including the steps of, a. continuously pulling a web upwardly from the top surface of a concrete slab along the length of the slab, b. continuously blowing air at the line of separation (or contact) between web and concrete surface, as the web is being pulled.
Claim 6
Independent Claim
66 words
A method of removing a generally imperforate web of indefinite length from the top surface of a hardened concrete slab, including the steps of, a. continuously pulling a web upwardly from the top surface of a concrete slab along the length of the slab, b. continuously blowing air at the line of separation (or contact) between web and concrete surface, as the web is being pulled.
Claim 7
Independent Claim
67 words
A method of laying a generally imperforate web of indefinite length on the top surface of an uncured concrete slab including the steps of, a. continuously laying down a web on the top surface of the concrete slab along the length of the slab, b. continuously removing air from the line of separation (or contact) between web and concrete surface, as the web is being laid down.
Claim 8
Independent Claim
67 words
A method of laying a generally imperforate web of indefinite length on the top surface of an uncured concrete slab including the steps of, a. continuously laying down a web on the top surface of the concrete slab along the length of the slab, b. continuously removing air from the line of separation (or contact) between web and concrete surface, as the web is being laid down.
References Cited (Backward Citations)
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Cited
US1965111A
Cited
US1946819A
Cited
US2046867A
Cited
US2554688A
Cited
US2908141A
Cited
US2848233A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-13 | 1975-03-15 | 1975-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-13 | 1979-03-15 | 1979-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-13 | 1983-03-15 | 1983-09-14 | $7700.00 | Window Closed / Lapsed |