Fuel cap assembly

• US 6,202,879 B1
• Filed: 04/13/1999
• Issued: 03/20/2001
• Est. Priority Date: 04/13/1998
• Status: Expired due to Fees

• Current Assignee: Tesma International, Inc. (Magna International Incorporated)
• Original Assignee: Tesma International, Inc. (Magna International Incorporated)
• Inventors: Gericke, Michael
• Primary Examiner(s): Shoap, Allan N.
• Assistant Examiner(s): ELOSHWAY, NIKI MARINA
• Application Number:
  US09/291,231
• Time in Patent Office: 707 Days
• Field of Search: 220/255, 220/86.2, 220/256, 220/281, 220/288, 220/202, 220/203.01, 220/203.02, 220/203.04, 220/203.06, 220/203.19, 220/203.22, 220/203.23, 220/203.24, 220/203.26, 220/203.27, 220/203.28, 220/203.29, 220/304, 220/375, 220/DIG.32, 220/DIG.33, 215/204, 215/217, 215/219, 215/305, 215/295, 215/330
• US Class Current: 220/255
• CPC Class Codes: B60K 15/0406 Filler caps for fuel tanks
• CPC Class Codes: Y10S 220/33 Gasoline tank cap

Abstract

A fuel cap assembly for use with a filler neck of a fuel tank. The cap assembly includes a tubular housing having a shaft. The housing secures the cap assembly to the filler neck of the fuel tank. An exterior cover is mounted to the housing for relative rotation about the housing. The cover has an integral hollow handle. The cap assembly is characterized by a pair of actuating fingers movably mounted within the handle. The fingers engage the shaft of the housing to selectively interlock the cover to the housing. A lost motion connection is created between the cover and the housing when the fingers are in a non-engaged position. When the fingers are squeezed to an engaged position, the cover is interlocked to the housing and rotation of the cover imparts rotation upon the housing.

Claims

1. A fuel cap assembly for use with a filler neck of a fuel tank, said cap assembly comprising;

a housing for removably securing and sealing said cap assembly to the filler neck of the fuel tank;

an exterior cover rotatably mounted to said housing for relative rotation about said housing;

a hollow handle extending outwardly from said cover;

at least one actuating finger movably mounted within said hollow handle; and

a shaft mounted to said housing and extending from said housing into said handle with said finger aligning with said shaft and being selectively engageable with said shaft to interlock said cover to said housing wherein said rotation of said handle and said cover imparts rotation upon said housing.

2. The cap assembly as set forth in claim 1 wherein said cover includes a hollow handle with said actuating finger disposed within said handle.

3. The cap assembly as set forth in claim 1 further including a pair of actuating fingers mounted within said handle of said cover for surrounding said shaft.

4. The cap assembly as set forth in claim 3 wherein said cover includes a pair of integral apertures with said fingers movably disposed within said apertures for movement between a non-engaged position with said fingers at least partially extending outside of said handle and an engaged position with said fingers engaging said shaft.

5. The cap assembly as set forth in claim 3 wherein each of said fingers includes an engaging surface.

6. The cap assembly as set forth in claim 5 wherein each of said engaging surfaces include integrally formed grooves disposed within said fingers.

7. The cap assembly as set forth in claim 6 wherein said shaft is disposed between said grooves of said fingers.

8. The cap assembly as set forth in claim 7 wherein said shaft has a substantially square configuration.

9. The cap assembly as set forth in claim 8 wherein said grooves of said engaging surfaces have substantially V-shaped configurations for selective engagement with said square shaped shaft.

10. The cap assembly as set forth in claim 3 further including a connecting member interconnecting said pair of fingers for continuously biasing said fingers toward a non-engaged position away from said shaft.

11. The cap assembly as set forth in claim 10 further including a pin extending from said cover and engaging said connecting member to secure said connecting member to said cover.

12. The cap assembly as set forth in claim 3 wherein said housing includes a torque transmitting portion and a tubular portion with said torque transmitting portion rotatably mounted to said tubular portion.

13. The cap assembly as set forth in claim 12 further including a ratchet mechanism disposed between said torque transmitting portion and said tubular portion of said housing wherein a predetermined level of torque is transferred from said torque transmitting portion to said tubular portion when said tubular portion engages the filler neck.

14. The cap assembly as set forth in claim 13 further including at least a pair of locking elements mounted to said tubular portion of said housing for selective engagement with the filler neck to secure said housing and said cover to the filler neck.

15. The cap assembly as set forth in claim 14 further including a seal mounted to said tubular portion of said housing for sealing engagement with the filler neck.

16. The cap assembly as set forth in claim 15 further including a valve mechanism disposed within said tubular portion of said housing below said torque transmitting portion for continuously maintaining a predetermined pressure within the fuel tank.

17. The cap assembly as set forth in claim 3 further including a tether mounted to said cover for securing said cover to an outside surface of the filler neck when said cover and said housing are removed from the filler neck.

18. The cap assembly as set forth in claim 17 further including an integral notch formed within said cover for securing said tether to said cover.