US 9,809,112 B2
Horizontal shaft fuel tank cap with charcoal canister
Yi Zhang, Chongqing (CN)
Assigned to CHONGQING FENGRUI PLASTIC Co., Ltd., Chongqing (CN)
Appl. No. 14/771,862
Filed by CHONGQING FENGRUI PLASTIC Co., Ltd., Chongqing (CN)
PCT Filed Mar. 30, 2015, PCT No. PCT/CN2015/075364
§ 371(c)(1), (2) Date Sep. 1, 2015,
PCT Pub. No. WO2016/127474, PCT Pub. Date Aug. 18, 2016.
Claims priority of application No. 2015 1 0080707 (CN), filed on Feb. 13, 2015.
Prior Publication US 2016/0361995 A1, Dec. 15, 2016
Int. Cl. B60K 15/05 (2006.01); B60K 15/04 (2006.01); B01D 53/04 (2006.01); B60K 15/035 (2006.01)
CPC B60K 15/0406 (2013.01) [B01D 53/0407 (2013.01); B01D 53/0423 (2013.01); B60K 15/03504 (2013.01); B01D 2253/102 (2013.01); B01D 2257/702 (2013.01); B01D 2257/708 (2013.01); B01D 2259/4516 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A horizontal shaft fuel tank cap with a charcoal canister, comprising:
a fuel tank inner cap;
a fuel tank outer cap,
wherein a hollow cavity with an upper opening is disposed in a center of said fuel tank inner cap, said fuel tank outer cap covering said upper opening and being disposed above said fuel tank inner cap;
a vent pipe, being disposed in said hollow cavity and being comprised of a first supporting column and a second supporting column, said first supporting column have a first diameter, said second supporting column having a second diameter, said first diameter being larger than said second diameter, said second supporting column being disposed above said first supporting column, said vent pipe dividing said hollow cavity into a filling cavity and a containing cavity, said filling cavity being disposed above said containing cavity,
wherein said first supporting column is disposed in said containing cavity,
wherein said second supporting column is disposed in said filling cavity,
wherein said first supporting column has a first bottom end contacting a bottom of said containing cavity of said hollow cavity and a first upper end aligned with a bottom of said filling cavity of said hollow cavity, and
wherein said second supporting column has a second bottom end contacting aligned with said bottom of said filling cavity of said hollow cavity and a second upper end contacting a bottom of said fuel tank outer cap;
a first air outlet being in fluid connection with said containing cavity through said bottom of said containing cavity and being disposed on said bottom of said containing cavity; and
a plurality of second air outlets being in fluid connection with said containing cavity and said filling cavity through said first upper end of said first supporting column and said bottom of said filling cavity, said filling cavity containing a fuel-absorption substrate.