| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_80787665b837ed3eb503bbcd27c0043a |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F05C2225-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F05C2225-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F05B2230-90
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F04C2230-40
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F05C2201-0442
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F04C2230-91
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F05B2230-40
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F05C2201-0466 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F04C29-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F04C18-084 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F04C18-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F04C29-02 |
| filingDate |
1994-04-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_dd1f09417e8ddb2d89a0dbbcd3798c36
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ab89ac291d74ae4e48a24a3e89809bcb
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_29774aa99ca44add9516e133c2465c00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d6c698406f93253ffa0af9969dd23dd0
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_88e4c535c43ad751da80cb15e4c027cf
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ca91189ebb3f8eb4fecc8bcf7c63b821
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_90edd2ffbad7da37c95ffbd639c96ee9
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1267900d3fad0153a001386c15c3de6b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4d1c5ec91f314506e76221d4d183ee07 |
| publicationDate |
1994-09-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
GB-2276421-A |
| titleOfInvention |
Rotary screw-type machine |
| abstract |
A compressor or a vacuum pump has male and female rotors 1', 2' which rotate within a casing 3', with or without mutual contact. The rotors are each surface-treated so as to form a non-electrolytic Ni plating layer which is then heated to a temperature not lower than 500 DEG C to produce a fine grain crystal structure in the non-electrolytic Ni plating layer which allows diffusion of constituents of both the Ni plating layer and the main body of the rotor at the boundary layer between the main body and the non-electrolytic Ni plating layer. The non-electrolytic Ni plating layer may be porous and impregnated with a solid lubricant. At least one organic resin layer may be applied over the Ni plating layer. <IMAGE> |
| priorityDate |
1990-04-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |