http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10988986-B2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_9f62d63c85e5f0574ff99348b38a5e88 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B4-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B6-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B4-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E02F5-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B4-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21D9-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B7-062 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21D9-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21D9-1006 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21D9-106 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B4-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B4-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B6-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B7-06 |
| filingDate | 2018-05-04^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-04-27^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bbc4218956c0f02fc882735bf06fad5d |
| publicationDate | 2021-04-27^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-10988986-B2 |
| titleOfInvention | Directional drilling apparatus using water hammer unit |
| abstract | A directional drilling apparatus using a water hammer unit according to the present invention includes a hammer body in which a bit unit configured to perform boring work is installed to be movable upward and downward at an end portion of the hammer body, a piston slidably installed on the hammer body and including an operating fluid discharge part formed in a longitudinal direction, a drive unit installed between the hammer body and the piston to support an upper portion of the piston and configured to move the piston upward and downward using water supplied through a rod connected to the hammer body, a hammer unit including a rotary shaft coupled to a bit by a first coupling part so as to transmit a rotational force in a state in which the hammer unit passes through the piston installed on the hammer body and is moved upward or downward by the bit, and a mud motor unit coupled to the hammer body and configured to rotate the rotary shaft. |
| priorityDate | 2017-05-04^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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