| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_76ac8b4caa0ca56954974177b0b13c85 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F02B1-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10T29-49744
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10T408-62 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B23G5-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B23P6-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F02F1-242
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01T13-08 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F02B1-04 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B23G5-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B23P6-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01T13-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F02F1-24 |
| filingDate |
1970-09-02^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1972-10-03^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_86d28c6c2ef819ea3d544a54b6b1f5d7 |
| publicationDate |
1972-10-03^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-3694838-A |
| titleOfInvention |
Apparatus for renewing damaged spark plug ports |
| abstract |
A tool for reworking spark plug ports in soft metal cylinder heads and comprising successive sections starting with a reduced extremity tapped to fit the original thread of the spark plug port, followed by two successive reamer sections of smaller and larger diameters, respectively, a tapered lead-in section, a tapping section and a third reamer section having a diameter larger than that of the tapping section to produce a countersink at the mouth of the spark plug port. Beyond the third reamer section the tool is provided with a hexagonal or other polygonal section for engagement by a wrench or the like. A separate handle portion having an internally threaded axial bore is provided for engaging the entering end of the reaming and tapping tool after the latter has penetrated through the cylinder head, which handle portion is provided with serrations surrounding the mouth of its axial bore and is counter-bored at the mouth to receive at least a part of the reamer section of the reaming and tapping tool. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6176653-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2016258406-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4218811-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109153089-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10596647-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5259706-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9976530-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-3869219-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2006260110-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4229867-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7484281-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2003215296-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2005111931-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6474285-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1726405-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6668784-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4103762-A |
| priorityDate |
1970-09-02^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |