Title:
WORK MACHINE
Document Type and Number:
WIPO Patent Application WO/2024/004878
Kind Code:
A1
Abstract:
The present invention enables the driving force of a work machine to be maintained over a long period. A driving machine 1 comprises: a tubular cylinder 10; a pressure accumulation container 14 that seals the upper end of the cylinder 10 in the vertical direction Z1; a piston 11 that, together with the cylinder 10 and the pressure accumulation container 14, demarcates a pressure chamber 13, and that imparts a striking force to a fastener; and a nut 26 that partitions the internal space of the cylinder 10 and the internal space of the pressure accumulation container 14. Grease 27 is applied to the inside wall 10a of the cylinder 10, and the nut 26 has a through-hole 26c that connects to the internal space of the cylinder 10 and the internal space of the pressure accumulation container 14 and guides air-flow passing therethrough to the inside wall 10a of the cylinder 10.
Inventors:
KUROKAWA SHOGO (JP)
NISHIDA MASASHI (JP)
NISHIDA MASASHI (JP)
Application Number:
PCT/JP2023/023399
Publication Date:
January 04, 2024
Filing Date:
June 23, 2023
Export Citation:
Assignee:
KOKI HOLDINGS CO LTD (JP)
International Classes:
B25C1/06; B25C1/04
Domestic Patent References:
| WO2017056810A1 | 2017-04-06 | |||
| WO2016136632A1 | 2016-09-01 |
Foreign References:
| JP2018051715A | 2018-04-05 | |||
| EP3332916A2 | 2018-06-13 |
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