Patent US2412515A successfully refreshed from Google Patents.
US3942564A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel tank filling inlet port device
Assignee: Nissan Motor Co Ltd
•
Filing: 1974-07-10
•
Granted: 1976-03-09
•
Expires: 1994-07-10
Abstract
Abstract A fuel inlet port with a recess formed therein allows a smaller diameter filling gun to discharge lead free fuel, but prevents the discharge of lead containing fuels from a larger diameter gun.
Inventors
- 👤 Tunoru Nakazato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:18
CPC Classifications
B; B67; B67D; B67D7/00; B67D7/06
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
233 words
A fuel filling inlet port device for a fuel tank in a motor vehicle, comprising a wall defining therein a first bore communicating with the outside atmosphere and having a cross sectional area larger than a first predetermined value, a second bore communicating with a fuel tank of a motor vehicle and having a cross sectional area smaller than said first predetermined value and larger than a second predetermined value, a third bore located between said first and second bores and tapered off from said first bore toward said second bore, and a recess communicating with said first, second and third bores and, when a nozzle, of a first fuel feeding gun, having a cross sectional area of said first predetermined value is inserted into said third bore through said first bore to feed fuel to said fuel tank, said recess forms a path of fluid flow from said nozzle to a hole in the side of said nozzle connected to a shut off mechanism of said fuel feeding gun, said recess having one end adjacent said second bore and the other end remoter from said fuel tank than said one end, fuel from said nozzle striking against said one end and being then diverted thereby toward said other end, said fuel diverted by said one end striking against said other end and being then diverted thereby to said hole in said nozzle.
Claim 2
Dependent Claim
233 words
A fuel filling inlet port device for a fuel tank in a motor vehicle, comprising a wall defining therein a first bore communicating with the outside atmosphere and having a cross sectional area larger than a first predetermined value, a second bore communicating with a fuel tank of a motor vehicle and having a cross sectional area smaller than said first predetermined value and larger than a second predetermined value, a third bore located between said first and second bores and tapered off from said first bore toward said second bore, and a recess communicating with said first, second and third bores and, when a nozzle, of a first fuel feeding gun, having a cross sectional area of said first predetermined value is inserted into said third bore through said first bore to feed fuel to said fuel tank, said recess forms a path of fluid flow from said nozzle to a hole in the side of said nozzle connected to a shut off mechanism of said fuel feeding gun, said recess having one end adjacent said second bore and the other end remoter from said fuel tank than said one end, fuel from said nozzle striking against said one end and being then diverted thereby toward said other end, said fuel diverted by said one end striking against said other end and being then diverted thereby to said hole in said nozzle.
Claim 3
Dependent Claim
108 words
A fuel filling inlet port device as claimed in claim 1, in which said wall has an inner end portion through which said second bore is formed, and further comprising a resilient plate valve member seated on said inner end portion of said wall, said valve member, when a nozzle, of a second fuel feeding gun, having a cross sectional area of said second predetermined value is inserted into said second bore through said first and third bores, being openable by said nozzle of said second fuel feeding gun and being unopenable by fuel from said nozzle of said first fuel feeding gun inserted into said third bore.
Claim 4
Dependent Claim
38 words
A fuel filling inlet port device as claimed in claim 2, in which said first fuel feeding gun is employed for a lead containing fuel and said second fuel feeding gun is employed for a lead free fuel.
Claim 5
Dependent Claim
40 words
A fuel filling inlet port device as claimed in claim 1, in which said one end and said other end of said recess each extend obliquely toward a longitudinal axis of said inlet port device to converge towards each other.
Claim 6
Dependent Claim
29 words
A fuel filling inlet port device as claimed in claim 1, in which opposite sides of said recess each extend toward a longitudinal axis of said inlet port device.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-09 | 1979-09-08 | 1980-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-09 | 1983-09-08 | 1984-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-09 | 1987-09-08 | 1988-03-09 | $7700.00 | Window Closed / Lapsed |