| 摘要 |
<p>Abstract 5 A frame assembly 10 for securing a screen 12 in a frame, the frame assembly 10 comprising: a channel 14 having an end wall 16 and first and second opposed side walls 18 and 20, a marginal edge 22 of the screen 12 being adapted to be secured in the channel 14. The frame assembly 10 also comprises a retention key strip 24 which is 10 adapted to be located in the channel 14 against the first side wall 18, the retention key strip 24 having a domed surface 26 on one face and a generally planar surface 28 on the opposite face, and wherein the first side wall 18 has a concave surface 30 adapted to receive the domed surface 26 of the retention key strip 24 in cooperating relationship therein. 15 The frame assembly 10 also comprises a keeper key strip 32 which is adapted to be located in the channel 14 against the second side wall 20 in an operative position, the keeper key strip 32 having a domed surface 34 on one face and a generally planar surface 36 on the opposite face, and wherein the second side wall 20 also has a concave surface adapted to receive the 20 domed surface of the keeper key strip 32 in cooperating relationship therein. In use, when the keeper key strip 32 is inserted into the channel 14 after the marginal edge 22 of the screen 12 is located against the generally planar surface of the retention key strip 24, the retention key strip 24 being already located within the channel 14 with its domed surface in cooperating 25 relationship with the concave surface of the first side wall 18, the keeper key strip 32 is forced into its operative position in the channel 14 with its generally planar surface pressing against the marginal edge 22 of the screen 12 to secure the screen in the channel 14. 40 /42 12 /m</p> |
