Rotary compressor gas routing for muffler system
Abstract
A hermetically sealed rotary compressor is disclosed wherein gas compressed within a compression chamber (85) defined by a cylinder block (84) is discharged through respective discharge ports (130, 140) in the main and outboard bearings (64, 74) defining the ends of the cylinder. Mufflers (90, 92) are provided on the outside ends of the bearings into which the compressed gas is expanded. A constricting gas passageway (160) extending through the bearings (64, 74) and the cylinder block (84) provides a path for constricted flow of gas from one muffler (90) to the other (92). The constricted gas expands upon entry into the other muffler (92), thereby providing a cooler recombined discharge gas for use in cooling oil in the oil sump (114) and cooling the motor stator windings (26).

Term
Term ended
Projected expiry passed 21 October 2008, 17.9 years ago.
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1 sheet
Sheet 1
Every citation, both ways
| Document | Relation | Office | Category | Cited during |
|---|---|---|---|---|
| US4457671A | Cites | United States of America | A | Search report |
| US4640669A | Cites | United States of America | AD | Search report |
| US4730996A | Cites | United States of America | XP | Search report |
10 members in 7 offices
Priority claims4
| Document | Office | Kind | Date |
|---|---|---|---|
| 138365 | United States of America | – | |
| 13836587 | United States of America | A | |
| 138365 | – | – | – |
| US19870138365 | – | – | – |
Members10
| Document | Office | Kind | |
|---|---|---|---|
| EP0322531A2 | European Patent Office (EPO) | A2 | |
| JPH01170789A | Japan | A | |
| KR890010419A | Republic of Korea | A | |
| BR8806342A | Brazil | A | |
| US4881879A | United States of America | A | |
| EP0322531A3This record | European Patent Office (EPO) | A3 | |
| KR910008213B1 | Republic of Korea | B1 | |
| EP0322531B1 | European Patent Office (EPO) | B1 | |
| DE3867220D1 | Germany | D1 | |
| CA1330976C | Canada | C |
24 legal events, as 2 offices reported them to INPADOC
Over the term
Point at a mark for the eventEvents
| Event | Code | Office | |
|---|---|---|---|
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Notification of lapseLapsedST | ST | FR | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Gb: european patent ceased through non-payment of renewal feeCeasedGBPC | GBPC | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| No opposition filedOpposition26N | 26N | EP | |
| No opposition filed within time limitOppositionORIGINAL CODE: 0009261PLBE | PLBE | EP | |
| Information on the status of an ep patent application or granted ep patentGrantedSTATUS: NO OPPOSITION FILED WITHIN TIME LIMITSTAA | STAA | EP | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| It: translation for a ep patent filedITF | ITF | EP | |
| It: translation for a ep patent filedITF | ITF | EP | |
| Corresponds to:REF | REF | EP | |
| Fr: translation filedET | ET | EP | |
| Designated contracting statesAK | AK | EP | |
| (expected) grantORIGINAL CODE: 0009210GRAA | GRAA | EP | |
| First examination report despatched17Q | 17Q | EP | |
| Request for examination filed17P | 17P | EP | |
| Designated contracting statesAK | AK | EP | |
| Search report despatchedORIGINAL CODE: 0009013PUAL | PUAL | EP | |
| Designated contracting statesAK | AK | EP | |
| Public reference made under article 153(3) epc to a published international application that has entered the european phaseORIGINAL CODE: 0009012PUAI | PUAI | EP |
Numbers
- Publication
- 0322531
- Publication, DOCDB
- 0322531
- Publication, EPODOC
- EP0322531
- Application
- 88117513
- Application, DOCDB
- 88117513
- Application, EPODOC
- EP19880117513
Titles3
- English
- Rotary compressor gas routing for muffler system
- German
- Gasleit der Schalldämpfungseinrichtung für Drehkolbenverdichter
- French
- Chemin des gaz d'un dispositif silencieux pour compresseur rotatif
Classification
- CPC, 4
- F04C29/12
- F04C23/008
- F04C29/065
- F04C29/068
- IPC, 4
- F04C18 356
- F04C23 00
- F04C29 06
- F04C29 12
Designated states4
- Contracting states, 4
- Germany
- France
- United Kingdom
- Italy