US3876579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition to be applied to a surface to increase its wear resistance
Assignee: FEL-PRO CHEMICAL PRODUCTS LP
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Filing: 1972-03-27
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Granted: 1975-04-08
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Expires: 1992-03-27
Abstract
Abstract A coating having high resistance to wear caused by impact, abrasion, erosion and corrosion. 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 for application to a 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
2026-10-25 02:22
CPC Classifications
B; B05; B05D; B05D5/00; B05D5/02; B24; B24D; B24D3/00; B24D3/34; B24D3/342; B24D3/344; B29; B29C; B29C35/00; B29C35/18; B29C41/00; B29C41/02; B29C41/12; C; C04; C04B; C04B26/00; C04B26/02; C04B26/10; C04B26/14; C09; C09D; C09D7/00; C09D7/40; C09D7/60; C09D7/61; C09D7/62; B29K; B29K2063/00; B29K2105/00; B29K2105/06; B29K2105/16; B29L; B29L2031/00; B29L2031/32; B29L2031/324; C04B2111/00; C04B2111/00474; C04B2111/00482; C08; C08K; C08K9/00; C08K9/02
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
141 words
A TROWELABLE WEARING COMPOSITION FOR ON-THE-JOB APPLICATION TO A SURFACE TO PROVIDE A WEARING SURFACE HAVING MORE RESISTANCE TO WEAR CAUSED BY IMPACT, ABRASION, EROSION OR CORROSION THAN NIHARD IRON, INCLUDING A MATRIX COMPOSED OF AN UNCURED CURABLE CROSSLINKABLE THERMOSETTING RESIN, A CURING AGENT FOR THE RESIN AND A THIXOTROPIC AGENT, LARGE ABRASION RESISTANT CERAMIC PARTICLES ON THE ORDER OF ONE-SIXTEENTH INCH IN THEIR LARGEST DIMENSION, MUCH SMALLER CO-ABRASION RESISTANT FILLER PARTICLES ON THE ORDER OF 180 MESH SIZE AND OF A HARDNESS ON THE ORDER OF THAT OF THE MATERIAL CAUSING THE WEAR DISPERSED IN RATHER RANDOM FASION AMONG THE LARGE PARTICLES WHEN APPLIED, THE CERAMIC AND FILLER PARTICLES BEING IN A RATIO OF THE ORDER OF 4 TO 1 BY WEIGHT, AND THE PARTICLES AND MATRIX BEING IN A RATIO ON THE ORDER OF 3 TO 1 BY WEIGHT.
Claim 2
Dependent Claim
141 words
A TROWELABLE WEARING COMPOSITION FOR ON-THE-JOB APPLICATION TO A SURFACE TO PROVIDE A WEARING SURFACE HAVING MORE RESISTANCE TO WEAR CAUSED BY IMPACT, ABRASION, EROSION OR CORROSION THAN NIHARD IRON, INCLUDING A MATRIX COMPOSED OF AN UNCURED CURABLE CROSSLINKABLE THERMOSETTING RESIN, A CURING AGENT FOR THE RESIN AND A THIXOTROPIC AGENT, LARGE ABRASION RESISTANT CERAMIC PARTICLES ON THE ORDER OF ONE-SIXTEENTH INCH IN THEIR LARGEST DIMENSION, MUCH SMALLER CO-ABRASION RESISTANT FILLER PARTICLES ON THE ORDER OF 180 MESH SIZE AND OF A HARDNESS ON THE ORDER OF THAT OF THE MATERIAL CAUSING THE WEAR DISPERSED IN RATHER RANDOM FASION AMONG THE LARGE PARTICLES WHEN APPLIED, THE CERAMIC AND FILLER PARTICLES BEING IN A RATIO OF THE ORDER OF 4 TO 1 BY WEIGHT, AND THE PARTICLES AND MATRIX BEING IN A RATIO ON THE ORDER OF 3 TO 1 BY WEIGHT.
Claim 3
Dependent Claim
20 words
The composition of claim 1 further characterized in that the large abrasion resistant particles are metal coated alumina ceramic particles.
Claim 4
Dependent Claim
17 words
The composition of claim 1 further characterized in that the large ceramic particles are essentially spherical beads.
Claim 5
Dependent Claim
16 words
The composition of claim 1 further characterized in that the co-abrasion resistant filler is silicon carbide.
Claim 6
Dependent Claim
16 words
The composition of claim 1 further characterizied in that the thermosetting resin is an epoxy resin.
Claim 7
Dependent Claim
198 words
A curable resin composition for on-the-job application to a surface to provide a wearing surface having more resistance to wear than NiHard iron, a unitary system including a container of a certain amount of the uncured resin with large abrasion resistant ceramic particles on the order of one-sixteenth inch in their largest dimension and much smaller co-abrasion resistant filler particles on the order of 180 mesh size therethrough and of a hardness on the order of that of the material causing the wear, and a separate container with a proportionate amount of a curing agent and with large abrasion resistant ceramic particles on the order of one-sixteenth inch in their largest dimension and much smaller co-abrasion resistant filer particles on the order of 180 mesh size therethrough whereby the contents of both containers are capable of mixing readily by the existence of large and much smaller abrasive particles in each container, the ceramic and filler particles being in a ratio on the order of 4 to 1 by weight and the particles and resin plus curing agent being in a ratio on the order of 3 to 1 by weight when the contents of both containers are combined.
Claim 8
Dependent Claim
198 words
A curable resin composition for on-the-job application to a surface to provide a wearing surface having more resistance to wear than NiHard iron, a unitary system including a container of a certain amount of the uncured resin with large abrasion resistant ceramic particles on the order of one-sixteenth inch in their largest dimension and much smaller co-abrasion resistant filler particles on the order of 180 mesh size therethrough and of a hardness on the order of that of the material causing the wear, and a separate container with a proportionate amount of a curing agent and with large abrasion resistant ceramic particles on the order of one-sixteenth inch in their largest dimension and much smaller co-abrasion resistant filer particles on the order of 180 mesh size therethrough whereby the contents of both containers are capable of mixing readily by the existence of large and much smaller abrasive particles in each container, the ceramic and filler particles being in a ratio on the order of 4 to 1 by weight and the particles and resin plus curing agent being in a ratio on the order of 3 to 1 by weight when the contents of both containers are combined.
Claim 9
Dependent Claim
21 words
The composition of claim 6 further characterized in that the large abrasion resistant ceramic particles are metal coated alumina ceramic particles.
Claim 10
Dependent Claim
16 words
The composition of claim 6 further characterized in that the large ceramic particles are spherical beads.
Claim 11
Dependent Claim
18 words
The composition of claim 6 further characterized in that the smaller co-abrasion resistant filler particles are silicon carbide.
Claim 12
Dependent Claim
15 words
The composition of claim 6 further characterized in that the resin is an epoxy resin.
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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) | 1978-04-07 | 1978-10-07 | 1979-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-07 | 1982-10-07 | 1983-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-07 | 1986-10-07 | 1987-04-08 | $7700.00 | Window Closed / Lapsed |