US5090377A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rechargeable fuel injection kit
Assignee: Shrader Canada Ltd
•
Filing: 1991-03-18
•
Granted: 1992-02-25
•
Expires: 2011-03-18
Abstract
Abstract A fuel injection system cleaning kit includes a pressurizable container of cleaning fluid, and a regulator to control the discharge pressure of the cleaning fluid. An isolating valve is located in the conduit between the regulator and container and a charging valve is placed between the container and isolating valve. With the isolating valve closed, a pressurized gas such as air, can charge the container through the charge valve.
Inventors
- 👤 Burton A. Pearson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 01:31
CPC Classifications
F; F02; F02M; F02M65/00; F02M65/007; F02M65/008
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
85 words
A fuel injection cleaning kit comprising a pressurizable container of cleaning fluid, a regulator to regulate the pressure of fluid discharged from said container, conduit means to connect said container and said regulator, said conduit means including an isolating valve operable to prevent flow between said container and said regulator and a charging valve to be located between said container and said isolating valve, said charging valve permitting flow into said container from a pressurized source connected thereto and inhibiting flow in the opposite direction.
Claim 2
Dependent Claim
85 words
A fuel injection cleaning kit comprising a pressurizable container of cleaning fluid, a regulator to regulate the pressure of fluid discharged from said container, conduit means to connect said container and said regulator, said conduit means including an isolating valve operable to prevent flow between said container and said regulator and a charging valve to be located between said container and said isolating valve, said charging valve permitting flow into said container from a pressurized source connected thereto and inhibiting flow in the opposite direction.
Claim 3
Dependent Claim
14 words
A fuel injection cleaning kit according to claim 1 wherein said regulator is adjustable.
Claim 4
Dependent Claim
26 words
A fuel injection cleaning kit according to claim 2 wherein said regulator includes a pressure gauge to indicate the pressure of fluid delivered by said regulator.
Claim 5
Dependent Claim
25 words
A fuel injection cleaning kit according to claim 1 wherein a pressure gauge is located in said conduit between said container and said isolating valve.
Claim 6
Dependent Claim
26 words
A fuel injection cleaning kit according to claim 1 wherein said charging valve is a check valve configured to permit connection of an air supply thereto.
References Cited (Backward Citations)
US1749312A
Cited
US3945366A
Cited
US4512587A
Cited
US4377135A
Cited
US4346689A
Cited
US4606311A
Cited
US4520773A
Cited
US4784170A
Cited
US4807578A
Cited
US4920996A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-02-24 | 1995-08-26 | 1996-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-02-24 | 1999-08-26 | 2000-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-02-24 | 2003-08-26 | 2004-02-25 | $7700.00 | Window Closed / Lapsed |