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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
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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

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