| 摘要 |
<p>A boot retainer (1) consists of a base (3) with a fixing (6) which holds in onto the snow-board (2). It also comprises a mechanism of adjusting its position, allowing the base to be rotated to any angle or moved in any direction parallel to the board's surface. The retainer has a plate (4) between its base and the board, fastened to the board by fixings (7-10) and made with a central threaded hub to receive the threaded shank of the retainer's fixing. The base of the retainer has a square aperture (47) with rounded corners which allows it to be adjusted relative to the hub and fixed in the required position. The plate and fixing are made from a metal such as steel, while a washer (5) between the fixing and the base can be made from a low friction metal such as bronze, a coated aluminium or a plastics such as PTFE, with or without reinforcement.</p> |
