| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_6896f1e164ab20598df8ce4e6a895f7c |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B23K31-025
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B23K9-046
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B23K35-3086
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B23P15-002 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B23P15-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B23K9-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B23K35-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B23K31-02 |
| filingDate |
1973-07-02^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1974-05-28^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_037edff0c804f7856d3513c1a6b1488d
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e67f96d23d302ced26b61effb60e4a2a |
| publicationDate |
1974-05-28^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-3813509-A |
| titleOfInvention |
System for internal-combustion engine valve production |
| abstract |
A system is disclosed for use in the production of valves that include a disk or head which is integral with an axiallyextending shank or stem. As disclosed herein, a form or blank of such a valve initially is provided (as by various metal-forming techniques) with an annular groove at the peripheral edge of the head. The valve form is then placed in a chuck to provide electrical contact with substantially the entire periphery of the valve head thereby affording a locus of short paths for heat flow and an arc-welding electrical current. In accordance herewith, the valve is then rotated in relation to an arc-welding apparatus to deposit an annulus of a specific form of hard metal in the groove of the valve. Finally, the valve is finished by smoothing the deposited annulus to provide a seating surface that will matingly engage an engine port to accomplish closure. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4117302-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11213912-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-9605935-A3
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-9605935-A2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4046100-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5486671-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5496986-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6009843-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4122817-A |
| priorityDate |
1972-10-06^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |