| 摘要 |
1495892 Vertical slat blind mechanism HUNTER DOUGLAS INDUSTRIES 19 Jan 1976 [23 Jan 1975] 02006/76 Heading E1J A drive mechanism for rotating the slats of a vertical slat louvre blind comprises a driving shaft 33 in the head-rail 1 and a series of slat-supporting carriages 3 with slots 4 engaging ribs (5) on the hand-rail and including a hollow worm 17 on a bush 15 with raised portions (15a &c) and a square hole 32 which forms a slipping clutch and a straight-toothed worm wheel 20 with stops 28, 29 and bearing a slat-suspending hook 30. The chain 36 turns the square shaft 33 which passes through holes 32 and so rotates the slats 31 through e.g. 160‹. The carriages 3 are slidable along the head rail into open and closed positions by the cord 10, the carriage 14a and the spacers 6.
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