US4026350A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Built in de-icing device
Assignee: Individual
•
Filing: 1975-06-19
•
Granted: 1977-05-31
•
Expires: 1995-06-19
Abstract
Abstract A device that is placed under the driveway surface and used in conjunction with a motor vehicle exhaust system to maintain an ice free driveway.
Inventors
- 👤 Sigmond Zembrzuski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:35
CPC Classifications
E; E01; E01C; E01C11/00; E01C11/24; E01C11/26; Y; Y10; Y10S; Y10S165/00; Y10S165/044
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
148 words
In combination, a motor vehicle, a road surface for supporting said vehicle, a de-icing apparatus comprising an elongated hollow conduit embedded under said surface and having first and second open ends exterior said surface for receiving and discharging a flow of a exhaust gas therethrough, a first flexible conduit member open at each end thereof, one end communicating with the first end of said elongated conduit, the other end of said flexible conduit communicating with heated exhaust gas from said vehicle, said second end of said elongated conduit communicating with and venting said gas to the atmosphere whereby there is continuous fresh passage of said gas from said vehicle through said conduit to said atmosphere, a vertically disposed hollow conduit portion backstream of said second open end integral with said conduit and communicating with said second open end whereby said exhaust gas is vented above the source thereof.
Claim 2
Dependent Claim
148 words
In combination, a motor vehicle, a road surface for supporting said vehicle, a de-icing apparatus comprising an elongated hollow conduit embedded under said surface and having first and second open ends exterior said surface for receiving and discharging a flow of a exhaust gas therethrough, a first flexible conduit member open at each end thereof, one end communicating with the first end of said elongated conduit, the other end of said flexible conduit communicating with heated exhaust gas from said vehicle, said second end of said elongated conduit communicating with and venting said gas to the atmosphere whereby there is continuous fresh passage of said gas from said vehicle through said conduit to said atmosphere, a vertically disposed hollow conduit portion backstream of said second open end integral with said conduit and communicating with said second open end whereby said exhaust gas is vented above the source thereof.
Claim 3
Dependent Claim
21 words
An apparatus as defined in claim 1 wherein said hollow conduit is in the substantial shape of a coil or loop.
References Cited (Backward Citations)
US1349136A
Cited
US2408605A
Cited
US2505622A
Cited
US2515341A
Cited
US2634659A
Cited
US3151613A
Cited
US3189021A
Cited
US3683152A
Cited
US3680449A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-05-30 | 1980-11-29 | 1981-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-30 | 1984-11-29 | 1985-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-30 | 1988-11-29 | 1989-05-31 | $7700.00 | Window Closed / Lapsed |