| 摘要 |
<p>PCT No. PCT/AU92/00609 Sec. 371 Date Nov. 25, 1994 Sec. 102(e) Date Nov. 25, 1994 PCT Filed Nov. 12, 1992 PCT Pub. No. WO93/10324 PCT Pub. Date May 27, 1993A releasable snib mechanism for a door latch assembly includes a body and a first rotary member disposed in the body and adapted to be engaged by and rotated with a door latch spindle. A snib member is mounted on the body for movement between a snibbing position in which the first rotary member is snibbed against rotation and a freeing position in which the first rotary member is free to rotate with the door latch spindle. A second rotary member is disposed in the body adjacent the first rotary member and is adapted to be engaged by and rotated by a shaft. This second rotary member is arranged upon initial rotation of the shaft to move the snib member from its snibbing position to its freeing position and upon continued rotation of the shaft to provide rotation to the first rotary member. According to one aspect of the invention the first and second rotary members include respective first and second formations which are disposed mutually adjacent when the rotary members are at a predetermined relative position for cooperating with a complementary snib formation on the snib member. The first formation and snib formation affect the aforementioned snibbing of the first rotary member and the second formation is effective as a cam during said initial rotation to act on the snib formation to move the snib member to its freeing position.</p> |
