US4261670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the protection of galleries
Assignee: Individual
•
Filing: 1979-03-02
•
Granted: 1981-04-14
•
Expires: 1999-03-02
Abstract
Abstract A process for the protection of the surface of the terrain in mine galleries from deterioration due to the surrounding atmosphere is characterized by the operation of spraying onto the wall to be protected, a fluid mixture of aminoplast resin powder and water and leaving the resin to gel on the spot, thus forming a continuous insulating lining coating.
Inventors
- 👤 Rolland Paban
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:42
CPC Classifications
E; E21; E21D; E21D11/00; E21D11/38
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
82 words
A process for the protection of the surface of the terrain in mine galleries from deterioration due to the surrounding atmosphere, comprising the steps of: (a) cleaning the surface to be protected by spraying with water; (b) spraying onto the wall to be protected a homogeneous fluid mixture of aminoplast resin power and water so as to form a substantially moisture proof, air-tight, continuous lining; and (c) leaving the resin to gel on the spot, thus forming a continuous insulating lining coating.
Claim 2
Dependent Claim
82 words
A process for the protection of the surface of the terrain in mine galleries from deterioration due to the surrounding atmosphere, comprising the steps of: (a) cleaning the surface to be protected by spraying with water; (b) spraying onto the wall to be protected a homogeneous fluid mixture of aminoplast resin power and water so as to form a substantially moisture proof, air-tight, continuous lining; and (c) leaving the resin to gel on the spot, thus forming a continuous insulating lining coating.
Claim 3
Dependent Claim
28 words
A process in accordance with claim 1, further comprising the application of a number of successive coatings wherein, at least one coating contains a charge of glass fibers.
Claim 4
Dependent Claim
43 words
A process in accordance with claim 2, comprising the application of a first priming coating without glass fiber, followed by a coating with a charge of glass fibers, and finally by a sealing coating with only a very small quantity of glass fiber.
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) | 1984-04-13 | 1984-10-13 | 1985-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-13 | 1988-10-13 | 1989-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-13 | 1992-10-13 | 1993-04-14 | $7700.00 | Window Closed / Lapsed |