| 摘要 |
<p>Improvements in or relating to wormwheel gears In order to provide a wormwheel gear (1) which is mouldable the toothing (2) which is disposed at least about a portion of the periphery of the gear has a decreasing pitch diameter over a first axial portion (6) thereof extending from one transverse face (3) of the gear and is straight and has a non-increasing, and preferably constant, pitch diameter over a second axial portion (7) extending to the other transverse face (4) of the gear. Such a configuration enables a moulding, which may be the gear or a green compact therefor, to be removed from the mould by simple relative axial movement of the moulding and mould, without the need to relatively rotate the mould or moulding.</p> |
