| 摘要 |
THE PRESENT INNOVATION PROVIDES A SIMPLIFIED LATCH FOR CASEMENT WINDOW, SAID LATCH INCLUDING A MOUNTING BASE (60) TO HE FIXED TO WINDOW FRAME AND HAVING A CIRCULAR MOUNTING APERTURE (1OS),A POLYMERIC MEMBER (50)) HAVING A CIRCULAR HEIGHT—EXTENDED APERTURE (102) AT ONE END AND A CIRCULAR SPHERICAL PROJECTION (104) AT THE OTHER END, A SUBSTANTIALLY L-SHAPED HANDLE MEMBER (70) HAVING A SUBSTANTIALLY CYLINDRICAL PROTRUSION (112) AND A BAR (114) HAVING A DEPRESSION AREA (118), SAID CYLINDRICAL PROTRUSION (11 2) PASSING THOUGH THE CIRCULAR HEIGHT-EXTENDED APERTURE (1 02) WHICH GRIPS IT FIRMLY, AND WHICH CIRCULAR HEIGHT-EXTENDED APERTURE (102) PASSES THOUGH THE CIRCULAR MOUNTING APERTURE (108), WHICH CIRCULAR MOUNTING APERTURE (108) GRIPS THE CIRCULAR HEIGHT- EXTENDED APERTURE (102) FRIMLY, THE HANDLE (70) ABLE TO TURN PIVOTALLV AROUND THE CYLINDRICAL PROTRUSION (112) TO LOCK THE LATCH INTO A LOCKING MEANS ATTACHED TO THE FRAME. WHEREIN THE CIRCULAR SPHERICAL PROJECTION (104) OF THE POLYMERIC MEMBER (50) IS COMPRESSED AS IT SLIDES OVER THE SAID LOCKING MEANS AND THEREFORE EXERTS SUFFICIENT PRESSURE ON THE LOCKING MEANS AND THE SLIDING DOOR TO TO PREVENT ANY LOOSENING OF THE CONTACT BETWEEN THE LATCH IN THE WINDOW AND THE LOCKING MEANS IN THE WINDOW FRAME.
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