IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0631910
(2009-12-07)
|
등록번호 |
US-8464764
(2013-06-18)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
Malin, Haley DiMaggio & Bowen, P.A.
|
인용정보 |
피인용 횟수 :
4 인용 특허 :
8 |
초록
▼
A fuel system ullage float valve assembly is provided for fuel tank and fuel fill line. This assembly is located near the intersection of the fuel fill line entering the uppermost top section of a fuel tank. A ullage float valve assembly includes a cage enclosure having an upper collar, a plurality
A fuel system ullage float valve assembly is provided for fuel tank and fuel fill line. This assembly is located near the intersection of the fuel fill line entering the uppermost top section of a fuel tank. A ullage float valve assembly includes a cage enclosure having an upper collar, a plurality of leg members and a base, essentially forming a frame-like structure. The upper collar is partially inserted into, and nest within, the fuel fill line as it enters the tank. The leg members extend downwardly into the tank in a generally vertical position. The assembly also includes a buoyant float chamber, having a generally cylindrical base and a generally converging, conical upper section. The float chamber is buoyant and it housed within the cage enclosure, and is slididly movable within the enclosure. During the fueling process as fuel fills the tank the ullage float assembly rises within the cage enclosure and to reach a sealing engagement with the upper collar of the assembly causing termination of the fueling process. The float assembly also includes a fuel bypass port.
대표청구항
▼
1. A fuel system ullage float valve assembly for a fuel tank and fuel fill line, located in proximity to the intersection of the fuel fill line entering the top section of a fuel tank, comprising: a cage enclosure, said cage enclosure including an upper collar, a plurality of leg members, and a base
1. A fuel system ullage float valve assembly for a fuel tank and fuel fill line, located in proximity to the intersection of the fuel fill line entering the top section of a fuel tank, comprising: a cage enclosure, said cage enclosure including an upper collar, a plurality of leg members, and a base member;said upper collar for nesting engagement within said fuel fill line, said upper collar partially protruding into, and being secured within, said fuel fill line; said upper collar further including an external flange, said external flange abutting said fuel fill line and limiting the insertion of said upper collar into said fuel fill line;said plurality of leg members extending downwardly from said upper collar and into said fuel tank;said base member being secured to said leg members;a float chamber, said float chamber having a generally cylindrical base section and a converging generally conical upper section; said upper collar flange further including a lower angled internal edge for receiving and complementing said conical upper section;said float chamber being buoyant and housed within said cage enclosure, and moveable therein; andwherein, during a fueling process as fuel fills said fuel tank reaching said ullage float assembly, said float chamber rises within said cage enclosure to reach sealing engagement with said upper collar causing termination of said fueling process. 2. The apparatus of claim 1 wherein said plurality of leg members extend downwardly from said external flange of said upper collar; said plurality of leg members further defining internally facing channel tracks;said generally cylindrical base section of said float chamber further defining a plurality of generally vertical external ribs;said leg member channel tracks guiding said external ribs for sliding engagement as said float chamber moves within said cage enclosure. 3. The apparatus of claim 1 wherein said float chamber cylindrical base has a diameter which exceeds the internal diameter of said upper collar; said lower angled internal edge of said upper collar flange abutting and providing sealing engagement with said conical upper section of said float chamber when said float chamber rises to its uppermost position within said cage enclosure. 4. The apparatus of claim 1 wherein said float chamber further defines a fuel bypass port providing fuel seepage from said fuel line into said fuel tank when said float chamber is in sealing engagement with said upper collar. 5. The apparatus of claim 4 wherein said fuel bypass port is an external trough defined on the external surface of said float chamber. 6. The apparatus of claim 4 wherein said fuel bypass port is an internal duct defined within said float chamber. 7. A fuel system ullage float valve assembly for a fuel tank and fuel fill line, located in proximity to the intersection of a fuel fill line entering the top section of a fuel tank, comprising: a cage enclosure, said cage enclosure including an upper collar, and a plurality of leg members;said upper collar being in fluid communication with said fuel fill line, said plurality of leg members extending downwardly from said upper collar and into said fuel tank;a float chamber, said float chamber constituting a closed chamber;said float chamber being buoyant and housed within said cage enclosure, and moveable therein; and said float chamber further defining a fuel bypass port providing fuel seepage from said fuel line into said fuel tank when said float chamber is in sealing engagement with said upper collar; andwherein, during a fueling process as fuel fills said fuel tank reaching said ullage float assembly, said float chamber rises within said cage enclosure to reach sealing engagement with said upper collar causing termination of said fueling process. 8. The apparatus of claim 7 wherein said plurality of legs further define channel tracks; said float chamber further comprises a plurality of external ribs;said leg member channel tracks guiding said external ribs for sliding engagement as said float chamber moves within said cage enclosure. 9. The apparatus of claim 7 wherein said fuel bypass port is an external trough defined on the external surface of said float chamber. 10. The apparatus of claim 7 wherein said fuel bypass port is an internal duct defined within said float chamber. 11. A fuel system ullage float valve assembly for a fuel tank and fuel fill line, located in proximity to the intersection of a fuel fill line entering the top section of a fuel tank, comprising: a cage enclosure, said cage enclosure including an upper collar, and a plurality of leg members;said upper collar being in fluid communication with said fuel fill line, said plurality of leg members extending downwardly from said upper collar and into said fuel tank;said plurality of leg members further having a plurality of channel tracks;a float chamber, said float chamber constituting a closed chamber;said float chamber being buoyant and housed within said cage enclosure, and moveable therein;said float chamber further having a plurality of external ribs;said leg member channel tracks guiding said external ribs for sliding engagement as said float chamber moves within said cage enclosure;said float chamber further defining a fuel bypass port providing fuel seepage from said fuel line into said fuel tank when said float chamber is in sealing engagement with said upper collar; wherein, during a fueling process as fuel fills said fuel tank reaching said ullage float assembly, said float chamber rises within said cage enclosure to reach sealing engagement with said upper collar causing termination of said fueling process.
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