Patent US5063891A successfully refreshed from Google Patents.
US5063891A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel supply device for an internal combustion engine
Assignee: Solex SA
•
Filing: 1989-10-23
•
Granted: 1991-11-12
•
Expires: 2009-10-23
Abstract
Abstract A fuel supply device for internal combustion engines comprises a constant level chamber, an engine-driven fuel pump having an outlet connected to the constant level chamber and an inlet connected to a fuel reservoir through a pipe provided with a non-return valve. A capacity located on the pipe is defined by a wall movable between a first position where the capacity has a maximum volume and a second position where the capacity has a minimum volume. A spring continuously biases the movable wall towards the first position. The movable wall is drawn to the second position responsive to start up of the engine.
Inventors
- 👤 Guy Noisier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:15
CPC Classifications
F; F02; F02M; F02M37/00; F02M37/20; F02M5/00; F02M5/10; Y; Y10; Y10S; Y10S261/00; Y10S261/08
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
130 words
A fuel supply device for an internal combustion engine, comprising: a constant level chamber, an engine-driven fuel pump having an outlet connected to said constant level chamber and an inlet connected to a fuel reservoir through a pipe provided with non-return valve means, a chamber located on said pipe between said non-return valve means and pump, defined by movable wall means movable between a first position where said chamber has a maximum volume and a second position where said chamber has a minimum volume, return means continuously biasing said movable wall means toward said first position, and driving means responsive to the depression at a point of an intake duct of the engine located downstream of a driver-controlled throttle member to move said movable wall means toward said second position.
Claim 2
Dependent Claim
130 words
A fuel supply device for an internal combustion engine, comprising: a constant level chamber, an engine-driven fuel pump having an outlet connected to said constant level chamber and an inlet connected to a fuel reservoir through a pipe provided with non-return valve means, a chamber located on said pipe between said non-return valve means and pump, defined by movable wall means movable between a first position where said chamber has a maximum volume and a second position where said chamber has a minimum volume, return means continuously biasing said movable wall means toward said first position, and driving means responsive to the depression at a point of an intake duct of the engine located downstream of a driver-controlled throttle member to move said movable wall means toward said second position.
Claim 3
Dependent Claim
26 words
Device according to claim 1, wherein the driving means comprises a pneumatic capsule having movable means drivably connected to the movable wall means defining the chamber.
Claim 4
Dependent Claim
30 words
Device according to claim 2, wherein the movable wall means defining the chamber comprise a deformable diaphragm and a push-rod drivably connected to said movable means of the pneumatic capsule.
Claim 5
Dependent Claim
16 words
Device according to claim 3, wherein the return means comprise spring means located in said chamber.
Claim 6
Dependent Claim
38 words
Device according to claim 1, wherein said engine driven pump is directly carried on the casing of an engine and said chamber is at a location sufficiently remote from said pump and engine for avoiding fuel vaporization therein.
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) | 1994-11-11 | 1995-05-13 | 1995-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-11-11 | 1999-05-13 | 1999-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-11-11 | 2003-05-13 | 2003-11-12 | $7700.00 | Window Closed / Lapsed |