DRAG-REDUCING SHAFT TAILFIN FOR VEHICLES

• US 20200130754A1
• Filed: 12/26/2019
• Published: 04/30/2020
• Est. Priority Date: 12/21/2012
• Status: Abandoned Application

• Current Assignee: Garth L. Magee
• Original Assignee: Garth L. Magee
• Inventors: MAGEE, GARTH L.
• Application Number:
  US16/727,005
• Publication Number:
  US 20200130754A1
• Time in Patent Office: Days
• CPC Class Codes: B60B 1/00 Spoked wheels; Spokes thereof non-metallic B60B5/00 ; spoked wheels comprising rail-engaging elements B60B17/001; making wheel spokes B21F39/00
• CPC Class Codes: B60B 1/003 specially adapted for bicycles B60B1/041 takes precedence
• CPC Class Codes: B60B 1/02 Wheels with wire or other tension spokes
• CPC Class Codes: B60B 1/0246 characterised by cross-section of the spoke, e.g. polygon or elliptic shape
• CPC Class Codes: B60B 1/0261 characterised by spoke form
• CPC Class Codes: B60B 2900/1216 due to air-drag
• CPC Class Codes: B60B 3/00 Disc wheels, i.e. wheels with load-supporting disc body non- metallic B60B5/00; wheel cover discs B60B7/00 ; disc wheels comprising rail-engaging elements B60B17/0006
• CPC Class Codes: B60B 3/007 in the intermediate section
• CPC Class Codes: B60B 3/02 with a single disc body integral with rim
• CPC Class Codes: B60B 3/08 with disc body formed by two or more axially spaced discs comprising rail-engaging elements formed by two or more axially spaced discs B60B17/0013
• CPC Class Codes: B60B 3/10 apertured to simulate spoked wheels
• CPC Class Codes: B60B 7/00 Wheel cover discs, rings, or the like, for ornamenting, protecting , venting, or obscuring, wholly or in part, the wheel body, rim, hub, or tyre sidewall , e.g. wheel cover discs, wheel cover discs with cooling fins wheels with cooling fins not provided on the wheel cover disc B60B19/10; apparatus or tools for removing or attaching cover discs hub caps or the like B60B31/06
• CPC Class Codes: B60B 7/0006 for cycle wheels or similar
• CPC Class Codes: B60B 7/0066 the dominant aspect being the surface structure
• CPC Class Codes: B60C 11/03 Tread patterns
• CPC Class Codes: B60C 11/0302 directional pattern, i.e. with main rolling direction
• CPC Class Codes: B60C 11/0327 characterised by special properties of the tread pattern
• CPC Class Codes: B60C 11/11 in which the raised area of the pattern consists only of isolated elements, e.g. blocks B60C11/12, B60C11/13 take precedence
• CPC Class Codes: B60C 19/00 Tyre parts or constructions not otherwise provided for
• CPC Class Codes: B60C 2011/0337 characterised by particular design features of the pattern
• CPC Class Codes: B60C 2200/10 : for motorcycles, scooters or the like
• CPC Class Codes: B60C 2200/14 : for off-road use
• CPC Class Codes: B60J 1/20 : Accessories, e.g. wind deflectors, blinds antiglare provisions B60J3/00; wind deflectors associated with roof openings B60J7/22; removable external protective coverings for windows or windscreens B60J11/08 ; aerodynamical spoiler for vehicles B62D35/00; heating arrangements specially adapted for transparent or reflecting areas H05B3/84
• CPC Class Codes: B60J 11/00 : Removable external protective coverings specially adapted for vehicles or parts of vehicles, e.g. parking covers covering of load on vehicles B60P7/00; guard strips for body finishing, identifying or decorating B60R13/04; tents for use as garages E04H15/00
• CPC Class Codes: B60Y 2200/13 : Bicycles; Tricycles
• CPC Class Codes: B62D 35/00 : Vehicle bodies characterised by streamlining
• CPC Class Codes: B62J 17/00 : Weather guards for riders; Fairings or stream-lining parts not otherwise provided for
• CPC Class Codes: B63B 2201/20 : Antenna or mast
• CPC Class Codes: B63H 9/04 : using sails or like wind-catching surfaces sail or rigging arrangements specially adapted for water sports boards, e.g. for windsurfing or kitesurfing B63H8/00
• CPC Class Codes: B64C 23/00 : Influencing air flow over aircraft surfaces, not otherwise provided for
• CPC Class Codes: F15D 1/0025 : using passive means, i.e. without external energy supply
• CPC Class Codes: F15D 1/10 : around bodies of solid material
• CPC Class Codes: H01Q 1/005 : Damping of vibrations; Means for reducing wind-induced forces
• CPC Class Codes: H01Q 1/32 : Adaptation for use in or on road or rail vehicles
• CPC Class Codes: Y10T 29/49492 : Land wheel

Abstract

An aerodynamic tailfin rotatably attached to a shaft-shaped member disposed on a vehicle. The tailfin swivels about the round shaft-shaped member for reduced drag in response to winds varying in direction impinging thereon.

Claims

1. An apparatus for reducing drag on a wind-exposed shaft-shaped member that is disposed on a vehicle, comprising:

an aerodynamic tailfin disposed in rotatable attachment to the shaft-shaped member wherein the tailfin may swivel freely about said shaft-shaped member in response to winds varying in direction impinging thereon.

2. The apparatus of claim 1, wherein the shaft-shaped member is an antenna.

3. The apparatus of claim 1, wherein the shaft-shaped member is a taut rope or a taut cable.

4. The apparatus of claim 1, wherein the vehicle is a boat.

5. The apparatus of claim 4, wherein the shaft-shaped member is a taut rope or a taut cable.

6. The apparatus of claim 4, wherein the boat is a sailboat.

7. The apparatus of claim 5, wherein the boat is a sailboat.

8. The apparatus of claim 1, wherein the vehicle is an aircraft.

9. The apparatus of claim 8, wherein the shaft-shaped member is a taut rope or a taut cable.

10. The apparatus of claim 8, wherein the aircraft is a hang glider.

11. The apparatus of claim 9, wherein the aircraft is a paraglider.

12. The apparatus of claim 10, wherein the shaft-shaped member is a taut rope or a taut cable.

13. An apparatus for reducing drag on a wind-exposed shaft-shaped member that is disposed on a vehicle, comprising:

an aerodynamic tailfin disposed in rotatable attachment to the shaft-shaped member wherein the tailfin may swivel freely about said shaft-shaped member in response to winds varying in direction impinging thereon; and

the vehicle is a boat.

14. The apparatus of claim 13, wherein the boat is a sailboat.

15. The apparatus of claim 13, wherein the shaft-shaped member is a taut rope or a taut cable.

16. The apparatus of claim 15, wherein the boat is a sailboat.

17. An apparatus for reducing drag on a wind-exposed shaft-shaped member that is disposed on a vehicle, comprising:

an aerodynamic tailfin disposed in rotatable attachment to the shaft-shaped member wherein the tailfin may swivel freely about said shaft-shaped member in response to winds varying in direction impinging thereon; and

the vehicle is an aircraft.

18. The apparatus of claim 17, wherein the shaft-shaped member is a taut rope or a taut cable.

19. The apparatus of claim 17, wherein the aircraft is a hang glider.

20. The apparatus of claim 19, wherein the shaft-shaped member is a taut rope or a taut cable.