| 摘要 |
<p>A knobset with a handle (10) which freely rotates and is not coupled to the latch mechanism (58) until a flat key (handle 50) of the correct combination is inserted. Insertion of the correct key (handle 50) rotationally couples handle (10) to lock parts (32, 38) and thrower (43, 47), and allows thrower (43, 47) to be moved axially to couple handle (10) to latch mechanism (58). The knobset includes rose (14), lock cylinder (26), and inner cylinder (30); with handle (10) freely rotatable and axially slidable within the rose (14). Handle (10) receives flat key (handle 50). Cylinders (26 and30) carry combination determining pins (29, 32). Pins (32) carry shoulders (34). Pins (29, 32) are received in corresponding openings in key (handle 50) of correct combination, allowing key (handle 50) to slide along pins (29, 32). Key (handle 50) bears on shoulders (34) causing pins (32) to push thrower (43, 47) into engagement with latch mechanism (58). Key (handle 50) also rotationally couples handle (10) through pins (29, 32), cylinders (26, 30) and thrower (43, 47) to latch mechanism (58). Flat key handle (50) includes inner and outer tokens (53, 52) adjustable to alter the combination of the key.</p> |
