Patent US3975911A successfully refreshed from Google Patents.
US3975911A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbocharger
Assignee: Individual
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Filing: 1974-12-27
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Granted: 1976-08-24
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Expires: 1994-12-27
Abstract
Abstract A turbocharger comprising a compressor casing with a compressor impeller accommodated therein; a turbine casing with a turbine wheel accommodated therein and mounted on a shaft which also mounts said compressor impeller; and an intermediate casing which couples the compressor casing to the turbine casing. Provided in the turbine casing are two adjacent passages each of which serves the purpose of carrying exhaust gases to one half of the turbine wheel. The passages are isolated from each other at the inlet to the turbine wheel by means of two partitions. A disk to protect the intermediate casing against the effects of exhaust gas heat is mounted coaxially with the shaft between the intermediate casing and the turbine casing. The disk is held against the partitions by springs located in the intermediate casing and is adapted to be moved axially along the shaft by the agency of the difference between the pressures exerted by the exhaust gases and the springs.
Inventors
- 👤 Jury Borisovich Morgulis
- 👤 German Mitrofanovich Povetkin
- 👤 Valery Naumovich Kaminsky
- 👤 Vyacheslav Alexandrovich Kochetov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:46
CPC Classifications
F; F01; F01D; F01D25/00; F01D25/08; F01D25/14; F01D25/145; F02; F02C; F02C6/00; F02C6/04; F02C6/10; F02C6/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
246 words
A turbocharger comprising: a compressor casing; a compressor impeller housed in said compressor casing; a turbine casing; a turbine wheel housed in said turbine casing; an intermediate casing which couples said compressor casing to said turbine casing; a shaft passing through said casings, said compressor impeller and turbine wheel being mounted on said shaft; two adjacent passages provided in said turbine casing, each passage serving the purpose of carrying exhaust gases to one half of said turbine wheel, and said passages being isolated from each other at the inlet to the turbine wheel; two partitions isolating said passages from each other at the inlets to said turbine wheel; a disk to protect said intermediate casing against the effects of exhaust gas heat, said disk being mounted coaxially with said shaft between said turbine casing and said intermediate casing for movement axially along said shaft and adapted to be pressed against said partitions; and springs located in said intermediate casing and pressing said disk against said partitions until the pressure in one of said passages reaches a given value, said springs then yielding to free said disk for movement axially along said shaft in opposition to said springs away from said partitions thus placing said passages in communication with each other for immediately lowering the pressure, whereby said disk not only acts to protect said intermediate casing against the effects of heat but also acts in cooperation with said springs to limit the pressure in said passages.
Claim 2
Dependent Claim
246 words
A turbocharger comprising: a compressor casing; a compressor impeller housed in said compressor casing; a turbine casing; a turbine wheel housed in said turbine casing; an intermediate casing which couples said compressor casing to said turbine casing; a shaft passing through said casings, said compressor impeller and turbine wheel being mounted on said shaft; two adjacent passages provided in said turbine casing, each passage serving the purpose of carrying exhaust gases to one half of said turbine wheel, and said passages being isolated from each other at the inlet to the turbine wheel; two partitions isolating said passages from each other at the inlets to said turbine wheel; a disk to protect said intermediate casing against the effects of exhaust gas heat, said disk being mounted coaxially with said shaft between said turbine casing and said intermediate casing for movement axially along said shaft and adapted to be pressed against said partitions; and springs located in said intermediate casing and pressing said disk against said partitions until the pressure in one of said passages reaches a given value, said springs then yielding to free said disk for movement axially along said shaft in opposition to said springs away from said partitions thus placing said passages in communication with each other for immediately lowering the pressure, whereby said disk not only acts to protect said intermediate casing against the effects of heat but also acts in cooperation with said springs to limit the pressure in said passages.
Claim 3
Dependent Claim
25 words
A turbocharger as claimed in claim 1, in which guides are fitted in said intermediate casing for said disk to move axially along said shaft.
Claim 4
Dependent Claim
25 words
A turbocharger as claimed in claim 1, in which guides are fitted in said turbine casing for said disk to move axially along said shaft.
References Cited (Backward Citations)
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US2803396A
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US3032259A
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US3625003A
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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) | 1979-08-24 | 1980-02-23 | 1980-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-24 | 1984-02-23 | 1984-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-24 | 1988-02-23 | 1988-08-24 | $7700.00 | Window Closed / Lapsed |