发明名称 |
Pneumatic striking mechanism and hand-held power tool |
摘要 |
A pneumatic striking mechanism includes a guide cylinder in which a freely moving piston and an exciter piston are arranged movably along a striking axis. The guide cylinder has a plastic. The striking mechanism includes a pneumatic chamber sealed off by the guide cylinder, by the freely moving piston and by the exciter piston, as well as a drive for periodically moving the exciter piston, as a result of which the freely moving piston is excited to execute a periodical movement between the striking surface and the exciter piston. |
申请公布号 |
US9199369(B2) |
申请公布日期 |
2015.12.01 |
申请号 |
US201012799184 |
申请日期 |
2010.04.19 |
申请人 |
Hilti Aktiengesellschaft |
发明人 |
Kristen Ferdinand;Hammerstingl Stefan;Manschitz Erwin;Hartmann Markus |
分类号 |
B25D11/06;B25D17/00;B25D9/04;B25D17/06 |
主分类号 |
B25D11/06 |
代理机构 |
Davidson, Davidson & Kappel, LLC |
代理人 |
Davidson, Davidson & Kappel, LLC |
主权项 |
1. A pneumatic striking mechanism comprising:
a guide cylinder; a freely moving piston and an exciter piston arranged movably in the guide cylinder along a striking axis; a pneumatic chamber sealed off by the guide cylinder, the freely moving piston and the exciter piston; and a drive for periodically moving the exciter piston so that the freely moving piston is excited to execute a periodical movement between a striking surface and the exciter piston; the guide cylinder including a plastic, wherein the guide cylinder has at least one layer made of a thermoset plastic and at least one layer of a thermoplastic,wherein an innermost layer of the at least one layer that defines an inner surface is made of a thermoset plastic. |
地址 |
Schaan LI |