Patent US4632649A successfully refreshed from Google Patents.
US4632649A
Expired / Lapsed
US
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Gas jet pump
Assignee: Sihi GmbH and Co KG
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Filing: 1985-07-23
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Granted: 1986-12-30
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Expires: 2005-07-23
Abstract
Abstract A gas jet pump having a housing and a mixing nozzle holder which, in the area of their flange connection, form a mounting for a mixing nozzle. The mounting comprises on the one hand a clamping groove formed by both flanges in their parting plane, and on the other hand an annular groove in the periphery of the mixing nozzle and a ring made of elastic material located in both grooves. This secures both the axial position of the mixing nozzle relative to the housing and also the sealing.
Inventors
- 👤 Udo Segebrecht
- 👤 Siegfried Auschrat
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:26
CPC Classifications
F; F04; F04F; F04F5/00; F04F5/44; F04F5/46
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
184 words
A gas jet pump having a housing (1) including a fuel inlet (11), a fuel nozzle (2) connected to the fuel inlet, and an entrained fluid inlet (9), a pump outlet (10), a mixing nozzle holder (4), a flange connection (5, 6, 7) between the housing and the mixing nozzle holder, and a mixing nozzle (3) between the fuel nozzle and the outlet, with a mounting being provided in the flange connection for the mixing nozzle, which mounting comprises a clamping groove formed by both flanges (6, 7) in their parting plane, wherein the holder for the mixing nozzle (3) comprises an annular groove (14) in the periphery of the mixing nozzle (3) and a ring (15) made of elastic material inserted into the annular groove (14), which ring (15) is enclosed under tension in the annular space formed by the annular groove (14) and the clamping groove, whereby the ring fixes the axial position of the mixing nozzle and provides a seal between the mixing nozzle and the housing, the mixing nozzle and the nozzle holder, and the housing and the nozzle holder.
Claim 2
Dependent Claim
184 words
A gas jet pump having a housing (1) including a fuel inlet (11), a fuel nozzle (2) connected to the fuel inlet, and an entrained fluid inlet (9), a pump outlet (10), a mixing nozzle holder (4), a flange connection (5, 6, 7) between the housing and the mixing nozzle holder, and a mixing nozzle (3) between the fuel nozzle and the outlet, with a mounting being provided in the flange connection for the mixing nozzle, which mounting comprises a clamping groove formed by both flanges (6, 7) in their parting plane, wherein the holder for the mixing nozzle (3) comprises an annular groove (14) in the periphery of the mixing nozzle (3) and a ring (15) made of elastic material inserted into the annular groove (14), which ring (15) is enclosed under tension in the annular space formed by the annular groove (14) and the clamping groove, whereby the ring fixes the axial position of the mixing nozzle and provides a seal between the mixing nozzle and the housing, the mixing nozzle and the nozzle holder, and the housing and the nozzle holder.
Claim 3
Dependent Claim
24 words
A gas jet pump as claimed in claim 1, wherein the ring (15) made of elastic material is a toroidal sealing ring (`O` ring).
Claim 4
Dependent Claim
45 words
A gas jet pump as claimed in claim 1 or 2 wherein the inner edge of one of the flange (6) of the housing (1) or the flange (7) of the mixing nozzle holder (4) is beveled (17 or 16) for forming the clamping groove.
Claim 5
Dependent Claim
60 words
A gas jet pump as claimed in claim 1 or 2, wherein the clamping groove is formed by a recess (19) on one of the flange (6) of the housing (1) or the flange (7) of the mixing nozzle holder (4), cooperating with the other of the flange (6) of the housing or the flange (7) of the nozzle holder.
Claim 6
Dependent Claim
28 words
A gas jet pump as claimed in one of claims 1 or 2, wherein the mixing nozzle (3) sits against a shoulder (18) arranged in the housing (1).
Claim 7
Dependent Claim
62 words
A gas jet pump as claimed in one of claims 1 or 2, wherein the portion of the mixing nozzle (3) between the annular groove (14) and the mixing nozzle end pointing towards the fuel nozzle (2) has a smaller outside diameter (21) than the portion of the mixing nozzle adjacent the annular groove in a direction away from the fuel nozzle.
Claim 8
Dependent Claim
42 words
A gas jet pump as claimed in claim 1 or 2 wherein the inner edge of the flange (6) of the housing (1) and the flange (7) of the mixing nozzle holder (4) are beveled (16, 17) for forming the clamping groove.
References Cited (Backward Citations)
US2183623A
Cited
US2085361A
Cited
US2146100A
Cited
US2178898A
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US2231090A
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US3064878A
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US3369735A
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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) | 1989-12-29 | 1990-06-30 | 1990-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-12-29 | 1994-06-30 | 1994-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-12-29 | 1998-06-30 | 1998-12-30 | $7700.00 | Window Closed / Lapsed |