US4958430A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacturing process for manufacturing thin edge orifice disks for fuel injectors
Assignee: Siemens Automotive LP
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Filing: 1989-02-02
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Granted: 1990-09-25
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Expires: 2009-02-02
Abstract
Abstract A thin edge orifice disk is defined as a disk having a thickness to main dimension or diameter ratio of at least 1:80. The manufacturing of an accurately sized orifice in the disk is accomplished by means of a progressive die. One of the stations of the die provides a coining operation on the orifice. Such coining operation is adjustable by means of a micrometer adjustment.
Inventors
- 👤 John H. Grieb
- 👤 J. Michael Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:05
CPC Classifications
F; F02; F02M; F02M51/00; F02M51/06; F02M51/061; B; B21; B21D; B21D53/00; B21D53/16; B23; B23P; B23P15/00; B23P15/16; F02M51/08; F02M61/00; F02M61/16; F02M61/18; F02M61/1853; Y; Y10; Y10S; Y10S29/00; Y10S29/037; Y10T; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/49236; Y10T29/49789
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
112 words
A process for manufacturing a thin edge orifice flat disk for fuel injectors comprising the steps of: procuring a strip of thin flat stock; maintaining the flatness of the thin stock; punching in the stock wherein each aperture has a wall equal to the thickness of the thin flat stock; punching in the stock the orifice in the correct relationship to the apertures, wherein each orifice has a wall equal to the thickness of the thin flat stock; coining an edge of the wall of the orifice; punching the outside perimeter of the disk in relationship to the apertures and the orifice; and then removing the disk from the thin flat stock.
Claim 2
Dependent Claim
112 words
A process for manufacturing a thin edge orifice flat disk for fuel injectors comprising the steps of: procuring a strip of thin flat stock; maintaining the flatness of the thin stock; punching in the stock wherein each aperture has a wall equal to the thickness of the thin flat stock; punching in the stock the orifice in the correct relationship to the apertures, wherein each orifice has a wall equal to the thickness of the thin flat stock; coining an edge of the wall of the orifice; punching the outside perimeter of the disk in relationship to the apertures and the orifice; and then removing the disk from the thin flat stock.
Claim 3
Dependent Claim
38 words
A process for manufacturing a thin edge orifice flat disk for fuel injectors according to claim 1 wherein the step of coining the edge of the wall of the orifice is by means of a conical shaped punch.
Claim 4
Dependent Claim
28 words
A process for manufacturing a thin edge orifice flat disk for fuel injectors according to claim 1 wherein the length/diameter ratio of said orifice is less than 0.25.
Claim 5
Dependent Claim
36 words
A process for manufacturing a thin edge orifice flat disk for fuel injection according to claim 1 additionally including the step of shaving from said disk all residual material as a result of the punching steps.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-09-24 | 1994-03-26 | 1994-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-09-24 | 1998-03-26 | 1998-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-09-24 | 2002-03-26 | 2002-09-25 | $7700.00 | Window Closed / Lapsed |