| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_2c8efaa6eb07db96ca897edfedce6d5f |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B10-40
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B10-58
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B10-56 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B10-56
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B10-58
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B10-40 |
| filingDate |
1975-03-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_73038e6299cc7e2444b3f259cf0e3c01 |
| publicationDate |
1976-09-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
DE-2510265-A1 |
| titleOfInvention |
DRILL BIT FOR HITTING ROCK DRILLING MACHINES |
| abstract |
The drill bit for a masonry drilling machine for stone includes in its front surface a centrally projecting cutting edge surrounded by a ring surface fitted with hard metal inserts. The ring surface tapers to its centre line and in part of its outer edge it is unevenly inclined by between 30 deg. and 55 deg. The hard metal inserts which are of conical shape, project vertically from the ring surface which has convex curvature. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0226537-A3
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0226537-A2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-2807156-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-3544433-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-3225050-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0036847-A3
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0036847-A2 |
| priorityDate |
1975-03-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |