US3695673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air-flow diverter for tractor-trailer rig
Assignee: Individual
•
Filing: 1970-09-11
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Granted: 1972-10-03
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Expires: 1990-09-11
Abstract
Abstract Air-flow diverter affixed on tractor cabin roof of tractortrailer rig, is generally plow-shaped to present rearwardly divergent concave surfaces, lower portions of which are presented upwardly. Air-flow against forwardly moving rig is diverted to fan around the top and adjacent side edges of trailer, while airflow resultantly applied against said upwardly presented lower portions applies downward steadying pressure against cabin roof, and thereby tending to amplify tractional capability of tractor.
Inventors
- 👤 James H Meadows
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:53
CPC Classifications
B; B62; B62D; B62D35/00; B62D35/001
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
181 words
An air-flow diverter, for combination with a tractor-trailer rIg of the type in which the tractor has a cabin roof positioned substantially lower than the top of a trailer having a front end of substantial broad lateral area, said air-flow diverter comprising: a generally plow-shaped shield including opposite side panels of substantial broad lateral area diverging rearwardly of a forward juncture line of the panels extending upwardly at an angle to the horizontal, and said side panels providing laterally opposite, forwardly presented concave surfaces each of substantial area defining valleys extending from a central point adjacent to the bottom of said shield and following inclined paths generally at a substantial angle to the horizontal; and means on said plow-shaped diverter for fixedly securing the same in upright condition on the cabin roof to have said concave surfaces spaced forwardly of the front wall of the trailer for diverting air-flow, otherwise tending to impinge directly against the same, to fan out in laterally opposite directions rearwardly along said valleys toward the sides of the trailer, and around the top of the trailer.
Claim 2
Dependent Claim
181 words
An air-flow diverter, for combination with a tractor-trailer rIg of the type in which the tractor has a cabin roof positioned substantially lower than the top of a trailer having a front end of substantial broad lateral area, said air-flow diverter comprising: a generally plow-shaped shield including opposite side panels of substantial broad lateral area diverging rearwardly of a forward juncture line of the panels extending upwardly at an angle to the horizontal, and said side panels providing laterally opposite, forwardly presented concave surfaces each of substantial area defining valleys extending from a central point adjacent to the bottom of said shield and following inclined paths generally at a substantial angle to the horizontal; and means on said plow-shaped diverter for fixedly securing the same in upright condition on the cabin roof to have said concave surfaces spaced forwardly of the front wall of the trailer for diverting air-flow, otherwise tending to impinge directly against the same, to fan out in laterally opposite directions rearwardly along said valleys toward the sides of the trailer, and around the top of the trailer.
Claim 3
Dependent Claim
43 words
An air-flow diverter as set forth in claim 1, wherein upwardly presented lowermost surface portions of said valleys are of substantial area, whereby pressure of diverted air-flow resultantly applied against said lowermost portions tend to apply substantial downward pressure against said cabin roof.
Claim 4
Dependent Claim
49 words
An air-flow diverter as set forth in claim 2, wherein said lowermost surface portions are of such areas that the pressure of diverted air-flow resultantly applied against the same will tend to apply substantial downward pressure against said cabin roof tending to amplify the tractional capability of the tractor.
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) | 1975-10-03 | 1976-04-03 | 1976-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-03 | 1980-04-03 | 1980-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-03 | 1984-04-03 | 1984-10-03 | $7700.00 | Window Closed / Lapsed |