Patent US4018944A successfully refreshed from Google Patents.
US4018944A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of applying a wearing surface
Assignee: FEL-PRO CHEMICAL PRODUCTS LP
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Filing: 1975-04-21
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Granted: 1977-04-19
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Expires: 1995-04-21
Abstract
Abstract A method of on-the-job installation of a coating having high resistance to wear caused by impact, abrasion, erosion and corrosion and a composition for use in performing the method. The method includes the preparation of a trowelable composition containing high alumina ceramic particles and a co-abrasive filler of smaller particles of inorganic and/or metallic origin in a polymer matrix and the application of this material to the surface to be repaired or protected.
Inventors
- 👤 James R. Hallstrom
- 👤 Raymond J. Hoffman
- 👤 Ronald L. Walling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:14
CPC Classifications
C; C09; C09D; C09D163/00; C08; C08K; C08K3/00; C08K3/34; C08K5/00; C08K5/04; C08K5/10; C08K5/12; C08K5/16; C08K5/17; C08K7/00; C08K7/02; C08K7/04; C08K7/10; C08K7/12; C08L; C08L63/00; C08L77/00; C08L77/06; C08L77/08; C09D7/00; C09D7/40; C09D7/43; C09D7/60; C09D7/61; C09D7/62; C08K3/10; C08K3/14; C08K3/18; C08K3/20; C08K3/22; C08K7/08; C08K9/00; C08K9/02
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
133 words
A method of making a surface substantially more wear resistant where the surface is subject to wear caused by impact, abrasion, erosion or corrosion, including the steps of supplying (a) an uncured curable crosslinkable thermosetting resin and (b) a curing agent for the resin, separately, in about a 2 to 1 ratio, and a thixotropic agent in an amount sufficient to prevent settling, intermixing independently in (a) and (b) both large abrasion resistant ceramic particles and much smaller coabrasion resistant filler particles of a hardness on the order of that of the material causing wear with the smaller particles dispersed in random fashion among the larger particles, mixing all the ingredients and applying the resultant mixture to the surface subject to wear and allowing it to cure and firmly adhere to the surface.
Claim 2
Independent Claim
133 words
A method of making a surface substantially more wear resistant where the surface is subject to wear caused by impact, abrasion, erosion or corrosion, including the steps of supplying (a) an uncured curable crosslinkable thermosetting resin and (b) a curing agent for the resin, separately, in about a 2 to 1 ratio, and a thixotropic agent in an amount sufficient to prevent settling, intermixing independently in (a) and (b) both large abrasion resistant ceramic particles and much smaller coabrasion resistant filler particles of a hardness on the order of that of the material causing wear with the smaller particles dispersed in random fashion among the larger particles, mixing all the ingredients and applying the resultant mixture to the surface subject to wear and allowing it to cure and firmly adhere to the surface.
Claim 3
Dependent Claim
21 words
The method of claim 1 further characterized in that the large abrasion resistant ceramic particles are metal coated alumina ceramic beads.
Claim 4
Dependent Claim
18 words
The method of claim 1 further characterized in that the large abrasion resistant ceramic particles are spherical beads.
Claim 5
Dependent Claim
18 words
The method of claim 1 further characterized in that the smaller co-abrasion resistant filler particles are silicon carbide.
Claim 6
Dependent Claim
15 words
The method of claim 1 further characterized in that the resin is an epoxy resin.
Claim 7
Dependent Claim
35 words
The method of claim 1 further characterized by and including the step of mixing both large and smaller particles separately in the resin and curing agent prior to mixing the resin and curing agent together.
Claim 8
Dependent Claim
41 words
The method of claim 1 further characterized in that the large abrasion resistant ceramic particles are on the order of 1/16 inch in their largest dimension and the smaller coabrasion resistant filler particles are on the order of 180 mesh size.
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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) | 1980-04-18 | 1980-10-18 | 1981-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-18 | 1984-10-18 | 1985-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-18 | 1988-10-18 | 1989-04-19 | $7700.00 | Window Closed / Lapsed |