Pneumatic tool
专利汇可以提供Pneumatic tool专利检索，专利查询，专利分析的服务。并且A reciprocatory pneumatic tool has a positive displacement pump for introducing a constant volume of liquid into the tool side of the piston upon each return stroke, and a valve operated in timed sequence with the pump for exhausting liquid upon each return stroke. The air on the opposite side of the piston is confined and of constant quantity, so that when the tool encounters high resistance, the tool will not advance as far on the working stroke and liquid will tend to accumulate on the tool side of the piston and the air will be more greatly compressed to deliver a more powerful working stroke. Conversely, when the tool encounters less resistance, the tool advances farther on the working stroke and more liquid is pumped out than is pumped into the cylinder, so that the compressed air is expanded and delivers a less powerful stroke. The force of impact is thus automatically adjusted in accordance with the resistance encountered. In a modification, liquid can be pumped through the piston one way in the direction of the air, and an outlet port normally covered by the piston can be exposed when the piston moves too far in either direction.，下面是Pneumatic tool专利的具体信息内容。
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| 一种气动螺旋脱硫塔 | 2020-05-12 | 751 |
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