| Title of Invention | HYDRAULIC ROTARY MACHINE |
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| Abstract | A hydraulic rotation machine having a rotating shaft provided in a casing, a cylinder block connected to the rotating shaft and having cylinder holes formed in it, and pistons slidably installed in the cylinders. The pistons reciprocate in the cylinders while the rotating shaft and the cylinder block rotate synchronously. At least either the sliding surface of each cylinder hole of the cylinder block or the sliding surface of a piston is processed, and a large number of minute recesses are formed in the processed surface. Each minute recess is an elliptical recess having on one side a gentle slope in the depth direction and also having a steep slope on the opposite side, and the minute recess is formed such that the gentle slope faces the direction in which the piston moves in the cylinder while receiving the action of a greater load. |
| Full Text | PAGE NOT CLEAR |
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1165-CHENP-2009 CORRESPONDENCE OTHERS 03-12-2014.pdf
1165-CHENP-2009 AMENDED CLAIMS 13-10-2014.pdf
1165-CHENP-2009 AMENDED PAGES OF SPECIFICATION 13-10-2014.pdf
1165-CHENP-2009 CORRESPONDENCE OTHERS 28-04-2014.pdf
1165-CHENP-2009 ENGLISH TRANSLATION 13-10-2014.pdf
1165-CHENP-2009 EXAMNATION REPORT REPLY RECEIVED 13-10-2014.pdf
1165-CHENP-2009 FORM-1 13-10-2014.pdf
1165-CHENP-2009 FORM-3 13-10-2014.pdf
1165-chenp-2009 completed speecification.pdf
1165-chenp-2009 correspoinding others.pdf
1165-CHENP-2009 POWER OF ATTORNEY 31-08-2009.pdf
1165-CHENP-2009-Petition for VET.pdf
1165CHENP2009-Petition for POR.pdf
| Patent Number | 263942 | ||||||||||||
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| Indian Patent Application Number | 1165/CHENP/2009 | ||||||||||||
| PG Journal Number | 49/2014 | ||||||||||||
| Publication Date | 05-Dec-2014 | ||||||||||||
| Grant Date | 27-Nov-2014 | ||||||||||||
| Date of Filing | 02-Mar-2009 | ||||||||||||
| Name of Patentee | HITACHI CONSTRUCTION MACHINERY CO., LTD | ||||||||||||
| Applicant Address | 5-1, KORAKU 2-CHOME, BUNKYO-KU, TOKYO | ||||||||||||
Inventors:
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| PCT International Classification Number | F04B1/22 | ||||||||||||
| PCT International Application Number | PCT/JP07/66357 | ||||||||||||
| PCT International Filing date | 2007-08-23 | ||||||||||||
PCT Conventions:
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