| 摘要 |
AN ANTI FIRE LOCKING DEVICE COMPRISING OF A HOUSING; A MOVABLE MOUNTING BLOCK MOUNTED INSIDE SAID HOUSING IN SUCH A MANNER THAT SAID MOUNTING BLOCK MAY MOVES BACK AND FORTH SNUGLY ALONG THE LENGTH OF SAID HOUSING; AT LEAST ONE CONVENTIONAL KEY LOCK HELD IN SAID MOVABLE MOUNTING BLOCK, HAVING LATCH OF SAID KEY LOCK PROTRUDES FROM THE FRONT END OF SAID MOVABLE MOUNTING BLOCK AND THROUGH OUT OF SAID HOUSING. THE ANTI FIRE LOCKING DEVICE IS MOUNTED WITHIN A DOOR. WHEN SAID DOOR IS LOCKED, SAID KEY LOCK CAN BE UNLOCKED BY CONVENTIONAL UNLOCKING MEANS, SUCH AS KEY AND BY SAID ANTI LOCKING MEANS. THE ANTI LOCKING MEANS IS HORIZONTALLY ENGAGING SAID MOUNTING BLOCK THROUGH SAID HOUSING FOR RETAINING SAID MOVABLE MOUNTING BLOCK TOWARDS THE FRONT END OF SAID HOUSING IN THE USUAL LOCKING MANNER AND FOR ALLOWING SAID ENTIRE MOVABLE MOUNTING BLOCK TO MOVE TOWARD THE REAR END OF SAID HOUSING IN ORDER TO ALLOW SAID LATCH OF THE KEY LOCK FULLY RETRACTS INTO SAID HOUSING EVEN WHEN SAID KEY LOCK IS LOCKED IN THE EVENT OF FIRE. |
