US3577893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulation method and constructions
Assignee: WILLIAM B DAVISON
•
Filing: 1968-09-27
•
Granted: 1971-05-11
•
Expires: 1988-09-27
Abstract
Abstract Pavement procedures and constructions for materially reducing frost heave in pavements and the like; during construction of the pavement or like structure, an insulating layer consisting essentially of particulate thermal insulating material dispersed throughout a matrix of soil cement is applied to define a frost barrier which insulates the subgrade.
Inventors
- 👤 Robert L Towner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:30
CPC Classifications
E; E01; E01C; E01C3/00; E01C3/04; E01C3/06
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
48 words
A method of providing thermal insulation between a structure and ground comprising applying between said structure and ground an insulating layer consisting essentially of particulate thermal insulating material intermixed with soil cement, said thermal insulating material comprising between 10 and 80 percent of the volume of said layer.
Claim 2
Independent Claim
48 words
A method of providing thermal insulation between a structure and ground comprising applying between said structure and ground an insulating layer consisting essentially of particulate thermal insulating material intermixed with soil cement, said thermal insulating material comprising between 10 and 80 percent of the volume of said layer.
Claim 3
Dependent Claim
24 words
A method as in claim 1 wherein said structure is traffic pavement and wherein said traffic pavement is subsequently applied over said insulating layer.
Claim 4
Dependent Claim
30 words
A method as in claim 1 wherein said structure is traffic pavement and including the step of first applying between said structure and ground a layer of nonfrost susceptible material.
Claim 5
Dependent Claim
59 words
A construction for providing thermal insulation between a structure and ground comprising an insulative layer located between said structure and ground, said insulating layer including a mixture of particulate thermal insulating layer including a mixture of particulate thermal insulating material and soil cement, said thermal insulating material comprising between 10 and 80 percent of the volume of said layer.
Claim 6
Dependent Claim
59 words
A construction for providing thermal insulation between a structure and ground comprising an insulative layer located between said structure and ground, said insulating layer including a mixture of particulate thermal insulating layer including a mixture of particulate thermal insulating material and soil cement, said thermal insulating material comprising between 10 and 80 percent of the volume of said layer.
Claim 7
Dependent Claim
17 words
A construction as in claim 4 wherein said structure includes a surface layer adapted for vehicle traffic.
Claim 8
Dependent Claim
17 words
A construction as in claim 5 including a layer of nonfrost susceptible material below said insulative layer.
Claim 9
Dependent Claim
15 words
A construction as in claim 5 wherein said particulate insulating material comprises expanded polystyrene beads.
Claim 10
Dependent Claim
22 words
A construction as in claim 7 wherein said polystyrene beads comprise at least 10 percent of the volume of said insulative layer.
Claim 11
Dependent Claim
26 words
A construction as in claim 4 wherein said particulate insulating material is selected from the group consisting of cork, bagasse, cotton, wood, rubber and cellular plastic.
Claim 12
Dependent Claim
23 words
A construction as in claim 4 wherein said particulate insulating material is selected from the group consisting of mica, slag, metal and glass.
Claim 13
Dependent Claim
12 words
A construction as in claim 4 wherein said structure comprises a conduit.
Claim 14
Dependent Claim
13 words
A construction as in claim 4 wherein said structure comprises building foundation structure.
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) | 1974-05-10 | 1974-11-09 | 1975-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-10 | 1978-11-09 | 1979-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-10 | 1982-11-09 | 1983-05-11 | $7700.00 | Window Closed / Lapsed |