| 摘要 |
A combination clutch-brake which includes a clutch unit including a clutch housing, a first hub, an annular clutch piston slidably mounted on said hub, an annular clutch cylinder carried by said clutch housing, a friction disc having fins thereon slidably mounted on and rotatable with the first hub, a brake unit including a disc journal having air passageways extending radially therein and mounted on a second hub, means rotatably mounting said second hub axially on said first hub, spring means normally urging said friction disc out of engagement with said disc journal, a brake housing mounted on said second hub, means connecting said clutch housing with said brake housing said brake housing having an annular cylinder formed therein, an annular piston base having an annular brake piston thereon and slidable within the annular cylinder, the brake piston having a friction facing thereon in axial alignment with the disc journal, means for normally urging the annular brake piston with said friction facing thereon out of engagement with said disc journal, means for causing fluid pressure to urge said clutch piston against said friction disc to cause said second hub to rotate, means for causing fluid pressure to urge said brake piston against said disc journal to brake the second hub, the friction disc formed with air passageways extending therethrough, the disc journal formed with air passageways extending therethrough and communicating with said air passageways of said friction disc, the brake piston base formed with air passageways extending therethrough and communicating with said air passageways of said disc journal, and the means connecting said clutch housing with said brake housing being separable.
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