Patent ID: 8807938
Filing Date: 2014-08-19
Classification: F04D,F21V,F24F

Abstract:
1. A combined ceiling fan and light fitting having folding fan blades including: a motor having a shaft and casing which is mounted for rotation about a fan rotation axis; a mounting element for fixing an end of the shaft; a blade support coupled to the casing of the motor for rotation therewith about said fan rotation axis; a plurality of blades pivotally mounted on the blade support for rotation about blade pivot axes between retracted and extended positions; at least one biasing element for biasing the blades into their retracted positions; the arrangement being such that, on operation of the motor, the casing rotates which causes rotation of the blades about said fan rotation axis and, due to centrifugal forces, about their respective blade pivot axes into their extended positions and, on de-activation of the motor, to return to their retracted positions by the action of said at least one biasing element characterised in that the fitting includes a synchronising mechanism, said synchronising mechanism includes a ring which is mounted for limited rotation about said fan rotation axis relative to the blade support and wherein the ring carries first gear teeth which mesh with second teeth coupled to respective blades whereby the blades are constrained to rotate in synchronism about their respective blade pivot axes; and wherein the ring includes a slot or slots and the blade support includes one or more pegs which are received in the slots whereby said limited rotational movement is defined by contact between the peg or pegs and the ends of the slots.