Patent EP0093784A1 successfully refreshed from Google Patents.
Patent US5583483A successfully refreshed from Google Patents.
Patent US4492201A successfully refreshed from Google Patents.
US4492201A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Petrol injector protection sheath
Assignee: Fiat Auto SpA
•
Filing: 1983-05-05
•
Granted: 1985-01-08
•
Expires: 2003-05-05
Abstract
Abstract This invention relates to a petrol injector protection sheath constructed of thermally insulating material such as rubber, for preventing overheating of said injector.
Inventors
- 👤 Dario Radaelli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:26
CPC Classifications
F; F02; F02M; F02M61/00; F02M61/16; F02M69/00; F02M69/04; F02M69/042; F02M69/044
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
101 words
A fuel injector of the type having a fitting for attachment to a fuel supply line, an electrical control, a body and a lower nozzle, said fuel injector being improved by heat shielding means including a thick wall heat insulating cup-shaped sheath telescoped entirely over said nozzle and surrounding said body, said sheath including a bottom wall having a hole therethrough for the injection of fuel, a lower part of said sheath including an outer portion of said bottom wall forming combined seating and sealing means for the mounting of said fuel injector within a seat of an engine intake duct.
Claim 2
Dependent Claim
101 words
A fuel injector of the type having a fitting for attachment to a fuel supply line, an electrical control, a body and a lower nozzle, said fuel injector being improved by heat shielding means including a thick wall heat insulating cup-shaped sheath telescoped entirely over said nozzle and surrounding said body, said sheath including a bottom wall having a hole therethrough for the injection of fuel, a lower part of said sheath including an outer portion of said bottom wall forming combined seating and sealing means for the mounting of said fuel injector within a seat of an engine intake duct.
Claim 3
Dependent Claim
21 words
A fuel injector according to claim 1 wherein an upper part of said fuel injector is encased in an insulated cap.
Claim 4
Dependent Claim
30 words
A fuel injector according to claim 1 wherein an upper part of said fuel injector is encased in an insulated cap which extends down to a top of said sheath.
Claim 5
Dependent Claim
29 words
A fuel injector according to claim 1 together with an insulating ring seated on a top of said sheath and having a seating surface for receiving a support bracket.
Claim 6
Dependent Claim
60 words
A fuel injector according to claim 4 wherein there is a pressure receiving shoulder on said fuel injector having an upper surface generally coplanar with the top of said sheath, and said insulating ring being seated on said shoulder for applying a retention force directly on said shoulder in addition to a force applied to the top of said sheath.
Claim 7
Dependent Claim
15 words
A fuel injector according to claim 5 wherein said shoulder is defined by a ring.
Claim 8
Dependent Claim
21 words
A fuel injector according to claim 4 wherein an upper part of said fuel injector is encased in an insulated cap.
Claim 9
Dependent Claim
30 words
A fuel injector according to claim 4 wherein an upper part of said fuel injector is encased in an insulated cap which extends down to a top of said sheath.
Claim 10
Dependent Claim
30 words
A fuel injector according to claim 5 wherein an upper part of said fuel injector is encased in an insulated cap which extends down to a top of said sheath.
References Cited (Backward Citations)
DE2208646A1
Cited
DE2233919A1
Cited
US4201172A
Cited
US3841727A
Cited
SU687248A1
Cited
US3993030A
Cited
US4143625A
Cited
US4240385A
Cited
US4294215A
Cited
US4307693A
Cited
US4327600A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-01-08 | 1988-07-09 | 1989-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-08 | 1992-07-09 | 1993-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-08 | 1996-07-09 | 1997-01-08 | $7700.00 | Window Closed / Lapsed |