| 摘要 |
he disclosed herein window-cover for catapults is composed of two pieces: the base (fig. 1(1) and the cap (fig. 1.2) both interconnected with joints (fig. 2.3) while two shock absorbers (fig. 2,4) ensure the opening of this cap at an angle of 90 deg. The invented window-cover is destined for covering openings in underground spaces, which should remain invisible and inaccessible to third parties (e.g. swimming pool engine rooms). This window-cover is made of stainless iron plate having upwardly turned ends (fig. 2.i) to permit the application of the same coating floor material around the catapult (e.g. tiles, marble, industrial floor etc). A permanently fixed handle (fig. 2. vi) is screwed at the lower part of the cap to permit the isolation of the catapult from inside. There is also a housing for receiving a stainless handle (fig. 2 iii) having at its lower end a screw accomodating its removal, when the catapult is out of use. |
