US2020130754A1PendingUtilityA1

Drag-reducing shaft tailfin for vehicles

60
Assignee: MAGEE GARTH LPriority: Dec 21, 2012Filed: Dec 26, 2019Published: Apr 30, 2020
Est. expiryDec 21, 2032(~6.4 yrs left)· nominal 20-yr term from priority
Inventors:Garth L. Magee
B60Y 2200/13B60C 11/03B60B 3/007B60B 1/003Y10T29/49492B60C 2200/14B60B 7/00B60C 2011/0337B60B 7/0066B60B 1/0261B60C 2200/10B60B 3/08B60C 11/0327B60B 1/0246B60B 1/02B60B 3/00B60B 2900/1216B60C 19/00B60B 3/02B60C 11/0302B62D 35/00B60B 3/10B60C 11/11Y02T10/88B60B 1/041B60C 11/0306B62D 25/18B60B 1/06B60B 7/0006B60B 1/00B64C 31/028H01Q 1/005H01Q 1/32F15D 1/10F15D 1/0025B64C 23/00B63H 9/04B63B 2201/20B62J 17/00B60J 11/00B60J 1/20
60
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Claims

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

exact text as granted — not AI-modified
I claim: 
     
         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.

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