| 摘要 |
<p>A jacking means (14), which, in use, can urge a member such as brush (44) towards and against the windscreen (48), then causing the wiper blade unit (10) to be lifted out of contact with the windscreen (48), and can cause or permit withdrawal of the member (44), thereby permitting the wiper blade unit (40) to engage the windscreen (48).</p> |
