| 摘要 |
<p>A fluid flow or fluid pressure transmission device comprising a fixed block (103) and a rotary shaft (94) mounted in relation to the fixed block (103) so as to be rotatable relative thereto. The fixed block (103) has a at least one passageway (110) through it extending to the rotary shaft (94), and the rotary shaft (94) has at least one annular groove (100) or other recess in registration with the fixed block passageway (110) and at least one axially extending passageway (98) in communication with the annular groove (100) or other recess. As a result, the axial passageway (98) is in communication with the fixed block passageway (110) independently of the angular position of the rotary shaft (94) relative to the fixed block (103). Such a device is particularly useful in supplying fluid flow or pressure to a rotary bending head (20) of a wire bending machine for example.</p> |
