US3892899A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roof construction
Assignee: Individual
•
Filing: 1973-07-19
•
Granted: 1975-07-01
•
Expires: 1993-07-19
Abstract
Abstract This invention relates to a method of constructing a roof to provide a surface which may be employed as a play, recreation or high traffic area.
Inventors
- 👤 Paul P Klein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:44
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/28; B32B27/286; E; E04; E04D; E04D11/00; E04D11/02; B32B27/12; B32B2315/00; B32B2315/06; B32B2323/00; B32B2323/04; B32B2327/00; B32B2327/06; B32B2375/00; B32B2419/00; B32B2419/06; Y; Y10; Y10T; Y10T428/00; Y10T428/16; Y10T428/163; Y10T428/164; Y10T428/166; Y10T428/249921; Y10T428/249953; Y10T428/249967; Y10T428/249968; Y10T428/249976; Y10T428/249987; Y10T428/249991; Y10T428/249992
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
109 words
A ROOF CONSTRUCTION CAPABLE OF WITHSTANDING CONSTANT AND ACTIVE FOOT TRAFFIC, WHICH COMPRISES, IN COMBINATION: A. A ROOF DECK, B. A WATER IMPERMEABLE MEMBRANE AFFIXED TO THE UPPER SURFACE OF SAID ROOF DECK, C. A THERMAL INSULATING MEMBER DISPOSED ON THE UPPER SURFACE OF SAID WATER IMPERMEABLE MEMBRANE, D. A BALLAST MEMBER COMPRISED OF A MULTITUDE OF PRECUT CONCRETE OR CEMENTITIOUS BLOCKS OR PAVING SQUARES DISPOSED ON THE UPPER SURFACE OF SAID THERMAL INSULATING MEMBER, AND E. A SUBSTANTIALLY WATER IMPERMEABLE AND NON-ABSORBENT WEARING SURFACE AFFIXED ON THE UPPER SURFACE OF SAID BALLAST MEMBER, TO PROVIDE A RELATIVELY SMOOTH, RESILIENT AND UNIFORM UPPER SURFACE TO SAID WEARING SURFACE MEMBER.
Claim 2
Dependent Claim
109 words
A ROOF CONSTRUCTION CAPABLE OF WITHSTANDING CONSTANT AND ACTIVE FOOT TRAFFIC, WHICH COMPRISES, IN COMBINATION: A. A ROOF DECK, B. A WATER IMPERMEABLE MEMBRANE AFFIXED TO THE UPPER SURFACE OF SAID ROOF DECK, C. A THERMAL INSULATING MEMBER DISPOSED ON THE UPPER SURFACE OF SAID WATER IMPERMEABLE MEMBRANE, D. A BALLAST MEMBER COMPRISED OF A MULTITUDE OF PRECUT CONCRETE OR CEMENTITIOUS BLOCKS OR PAVING SQUARES DISPOSED ON THE UPPER SURFACE OF SAID THERMAL INSULATING MEMBER, AND E. A SUBSTANTIALLY WATER IMPERMEABLE AND NON-ABSORBENT WEARING SURFACE AFFIXED ON THE UPPER SURFACE OF SAID BALLAST MEMBER, TO PROVIDE A RELATIVELY SMOOTH, RESILIENT AND UNIFORM UPPER SURFACE TO SAID WEARING SURFACE MEMBER.
Claim 3
Dependent Claim
29 words
The roof construction of claim 1, wherein the ballast member is comprised of a multitude of concrete blocks having a density of at least 5 pounds per square foot.
Claim 4
Dependent Claim
29 words
The roof construction of claim 1, wherein the wearing surface member is affixed on the upper surface of the said ballast member in a thickness of about one-quarter inch.
Claim 5
Dependent Claim
17 words
The roof construction of claim 1, wherein the thermal insulating member is a plastic cellular foam material.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-30 | 1978-12-30 | 1979-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-30 | 1982-12-30 | 1983-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-30 | 1986-12-30 | 1987-07-01 | $7700.00 | Window Closed / Lapsed |