公开(公告)号：WO2013176884A1

公开(公告)日：2013-11-28

申请号：PCT/US2013/040046

申请日：2013-05-08

Applicant: INGERSOLL-RAND COMPANY

Inventor： YASCHUR, Jefferey Clifford ,  YOUNG, Randi Jane ,  PYLES, Douglas Eliot

IPC: B24B23/02 ,  B25F5/00

CPC classification number: B25F5/02 ,  B24B23/00 ,  B24B23/026 ,  B24B41/00 ,  Y10T29/49826

Abstract: Hand-held power tools with an external composite sleeve having a forward portion and a rearward portion and defining an axially extending cavity. The power tools also include an internal metal housing having a substantially cylindrical body with a plurality of circumferentially spaced apart, longitudinally-extending front posts that project radially outward from the cylindrical body. The metal housing resides in the composite sleeve. The front posts can be closely spaced to or abut an inner surface of the forward end (e.g., front cap) of the sleeve. In a front exhaust configuration, the front posts and sleeve cooperate to define a plurality of circumferentially spaced apart gap spaces, a respective gap space bounded by adjacent posts, an outer surface of the cylindrical body and the inner surface of the sleeve.

Abstract translation: 具有外部复合套筒的手持式电动工具具有前部和后部并且限定轴向延伸的空腔。 电动工具还包括内部金属壳体，其具有基本上圆柱形的主体，该主体具有从圆柱体径向向外突出的多个周向间隔开的纵向延伸的前柱。 金属外壳位于复合套管中。 前柱可以与套筒的前端（例如，前盖）的内表面紧密地间隔开或邻接。 在前排气构造中，前柱和套筒配合以限定多个周向间隔开的间隙空间，由相邻柱限定的相应间隙空间，圆柱体的外表面和套筒的内表面。