Patent US3892438A successfully refreshed from Google Patents.
US3892438A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air channeling means
Assignee: Individual
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Filing: 1972-07-12
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Granted: 1975-07-01
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Expires: 1992-07-12
Abstract
Abstract Air ducts mounted to pass through the bodies of campers or trailers and provide flow paths for air from relatively high pressure to relatively low pressure areas adjacent the outer surfaces of the vehicle bodies. In their most useful forms, the air ducts run from side to side through the vehicle bodies, and serve to reduce air pressure differences between the sides of moving vehicles caught in strong crosswinds, and thus protect the vehicles against the danger of turnover in such winds.
Inventors
- 👤 Chester H John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:35
CPC Classifications
B; B62; B62D; B62D35/00; B62D35/001; B62D35/002; B62D37/00; B62D37/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
174 words
Duct means for channeling the flow of air normally surrounding a land recreational vehicle from any higher pressure zone in the exterior areas adjacent the front and axial walls of the vehicle to any lower pressure zone in the exterior areas adjacent the axial and rear walls of the vehicle, other than from a higher pressure zone adjacent the front to a lower pressure zone adjacent the rear wall of said vehicle, said duct means comprising removably installable ductwork and accessory means for maintaining the installed ductwork in position between openings in the vehicular walls so that channeling of the air takes place through said ductwork, said ductwork comprising tubing of the type which can be expanded and collapsed in accordion-like fashion for bending and length adjustment purposes, and said accessory means comprising means to permit the temporary installation of said tubing between vehicle window openings positioned so that said channeling of the flow of air from higher to lower pressure areas adjacent the outer walls of the vehicle takes place through said tubing.
Claim 2
Dependent Claim
174 words
Duct means for channeling the flow of air normally surrounding a land recreational vehicle from any higher pressure zone in the exterior areas adjacent the front and axial walls of the vehicle to any lower pressure zone in the exterior areas adjacent the axial and rear walls of the vehicle, other than from a higher pressure zone adjacent the front to a lower pressure zone adjacent the rear wall of said vehicle, said duct means comprising removably installable ductwork and accessory means for maintaining the installed ductwork in position between openings in the vehicular walls so that channeling of the air takes place through said ductwork, said ductwork comprising tubing of the type which can be expanded and collapsed in accordion-like fashion for bending and length adjustment purposes, and said accessory means comprising means to permit the temporary installation of said tubing between vehicle window openings positioned so that said channeling of the flow of air from higher to lower pressure areas adjacent the outer walls of the vehicle takes place through said tubing.
Claim 3
Dependent Claim
138 words
In a land recreational vehicle, means for channeling the flow of air normally surrounding said vehicle from any higher pressure zone in the exterior areas adjacent the front and sides of the vehicle to any lower pressure zone in the exterior areas adjacent the sides and rear of the vehicle, other than from a higher pressure zone adjacent the front to a lower pressure zone adjacent the rear of said vehicle, said means comprising flexible tubing of the type which can be expanded and collapsed in accordion-like fashion for bending and length adjustmEnt purposes, and accessory means to permit the temporary installation of said tubing between recreational vehicle window openings positioned so that said channeling of the flow of air from higher to lower pressure areas adjacent the outer walls of the vehicle takes place through said tubing.
Claim 4
Dependent Claim
138 words
In a land recreational vehicle, means for channeling the flow of air normally surrounding said vehicle from any higher pressure zone in the exterior areas adjacent the front and sides of the vehicle to any lower pressure zone in the exterior areas adjacent the sides and rear of the vehicle, other than from a higher pressure zone adjacent the front to a lower pressure zone adjacent the rear of said vehicle, said means comprising flexible tubing of the type which can be expanded and collapsed in accordion-like fashion for bending and length adjustmEnt purposes, and accessory means to permit the temporary installation of said tubing between recreational vehicle window openings positioned so that said channeling of the flow of air from higher to lower pressure areas adjacent the outer walls of the vehicle takes place through said tubing.
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 |