Patent US4744693A successfully refreshed from Google Patents.
US4744693A
Expired / Lapsed
US
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Pot hole filler material and method of filling same
Assignee: TEXAS PERMAFILL Corp
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Filing: 1986-09-17
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Granted: 1988-05-17
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Expires: 2006-09-17
Abstract
Abstract A pot hole filling formulation comprises a polyolefin preferably ethylene acrylic acid in combination with an aggregate preferably gravel particles of one-quarter inch dimension or larger. The polyolefin, preferably in pellet form is mixed with the aggregate and applied to the pot hole. A heat source melts the polyolefin and causes it to flow within the pot hole to fill up the crevices in the pot hole. A second layer of aggregate is applied to the top surface of the fill before the polyolefin hardens to improve the skid resistant qualities of the fill as well as to minimize any deleterious effects of ultraviolet light from the sun.
Inventors
- 👤 William C. Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:56
CPC Classifications
E; E01; E01C; E01C11/00; E01C11/005
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
90 words
A method for filling a pot hole comprising: placing an ethylene-unsaturated carboxylic acid copolymer wherein the carboxylic acid is selected from the group consisting of acrylic acid, methacrylic acid, ethacrylic acid, crotonic acid, vinyl acetic acid, maleic acid and fumaric acid and wherein the carboxylic acid comprises 12 to 35 weight percent of the copolymer into the pot hole at ambient temperature; placing aggregate in the pot hole; heating the mixture of copolymer and aggregate with an infrared heat source until the copolymer is melted; and removing the heat source.
Claim 2
Independent Claim
90 words
A method for filling a pot hole comprising: placing an ethylene-unsaturated carboxylic acid copolymer wherein the carboxylic acid is selected from the group consisting of acrylic acid, methacrylic acid, ethacrylic acid, crotonic acid, vinyl acetic acid, maleic acid and fumaric acid and wherein the carboxylic acid comprises 12 to 35 weight percent of the copolymer into the pot hole at ambient temperature; placing aggregate in the pot hole; heating the mixture of copolymer and aggregate with an infrared heat source until the copolymer is melted; and removing the heat source.
Claim 3
Dependent Claim
12 words
The method of claim 1, wherein said copolymer is ethylene-acrylic acid copolymer
Claim 4
Dependent Claim
18 words
The method of claim 1 wherein: the aggregate and copolymer are premixed before placement in the pot hole.
Claim 5
Dependent Claim
18 words
The method of claim 3 wherein: the aggregate and copolymer are premixed before placement in the pot hole.
Claim 6
Dependent Claim
39 words
The method of claim 1 further including the step of: adding more aggregate to the top surface of the copolymer aggregate mixture, while the copolymer is still in a melted state, such that aggregate extends through said top surface.
Claim 7
Dependent Claim
39 words
The method of claim 3 further including the step of: adding more aggregate to the top surface of the copolymer aggregate mixture, while the copolymer is still in a melted state, such that aggregate extends through said top surface.
Claim 8
Dependent Claim
17 words
The method of claim 6 wherein the aggregate is at least one-quarter inch in its smallest dimension.
Claim 9
Dependent Claim
22 words
The method of claim 1 further including the step of: adding a top layer of carbon black to the copolymer aggregate mixture.
Claim 10
Dependent Claim
22 words
The method of claim 2 further including the step of: adding a top layer of carbon black to the copolymer aggregate mixture.
Claim 11
Independent Claim
180 words
A method for filling a pot hole extending into the base of a roadway comprising the steps of: patching the base by the steps of: placing an ethylene-unsaturated carboxylic copolymer wherein the carboxylic acid is selected from the group consisting of acrylic acid, methacrylic acid, ethacrylic acid, crotonic acid, vinyl acetic acid, maleic acid and fumaric acid and wherein the carboxylic acid comprises 12 to 35 weight percent of the copolymer into the pot hole at ambient temperature; placing aggregate into the pot hole; heating the mixture of copolymer and aggregate, which forms a base layer, with an infrared heat source until the copolymer is melted, the mixture having a top surface approximately even to slightly higher than, the remainder of said base; removing the heat source; and filling the remainder of the pot hole with a top layer by the steps of: placing copolymer into the pot hole at ambient temperature; placing aggregate in the pot hole; heating the mixture of copolymer and aggregate with an infrared heat source until the copolymer is melted; and removing the heat source.
Claim 12
Independent Claim
180 words
A method for filling a pot hole extending into the base of a roadway comprising the steps of: patching the base by the steps of: placing an ethylene-unsaturated carboxylic copolymer wherein the carboxylic acid is selected from the group consisting of acrylic acid, methacrylic acid, ethacrylic acid, crotonic acid, vinyl acetic acid, maleic acid and fumaric acid and wherein the carboxylic acid comprises 12 to 35 weight percent of the copolymer into the pot hole at ambient temperature; placing aggregate into the pot hole; heating the mixture of copolymer and aggregate, which forms a base layer, with an infrared heat source until the copolymer is melted, the mixture having a top surface approximately even to slightly higher than, the remainder of said base; removing the heat source; and filling the remainder of the pot hole with a top layer by the steps of: placing copolymer into the pot hole at ambient temperature; placing aggregate in the pot hole; heating the mixture of copolymer and aggregate with an infrared heat source until the copolymer is melted; and removing the heat source.
Claim 13
Dependent Claim
12 words
The method of claim 10 wherein said copolymer is ethylene-acrylic acid copolymer.
Claim 14
Dependent Claim
38 words
The method of claim 11 further comprising the step of: adding more aggregate to the top surface of the top layer, while the copolymer is still in a melted state, such that aggregate extends through said top surface.
Claim 15
Dependent Claim
24 words
The method of claim 12 further including the step of: adding a layer of carbon black to the top surface of said top layer.
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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) | 1991-05-17 | 1991-11-16 | 1992-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-17 | 1995-11-16 | 1996-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-17 | 1999-11-16 | 2000-05-17 | $7700.00 | Window Closed / Lapsed |