| 摘要 |
<p>A door lock includes a number of code elements for controlling locking and having a clutch including three cams and three cam followers allowing opening when adjusted according to a prescribed code. The cams are balls embedded in a swash plate that wobbles on a bearing ball and are located at the corners of an equilateral triangle. When coded for opening, the three cam followers simultaneously contact the three cams to prevent wobbling and allow the followers to operate as drivers for the swash plate and a lock closing body.</p> |
