B - Operations – Transporting – 41 – J
Patent
B - Operations, Transporting
41
J
197/80
B41J 1/30 (2006.01) B41J 1/24 (2006.01) B41J 25/24 (2006.01)
Patent
CA 1174632
ABSTRACT OF THE DISCLOSURE A printer employing a daisy-type type wheel. On a hub of the type wheel a pin is slidably disposed and is backwardly biased by a spring to protrude from the rear surface of the hub. In a central opening of the hub a hair pin spring having a pair of arms is disposed. The type wheel is fixed on a drive shaft of a motor through a coupling element. The coupling element is provided with a projection which is fitted into the opening of the hub and engaged with the arms of the hair pin spring by snap action to latch the type wheel against the drive shaft in axial direction. In the axially latched state the pin is protruded from the front surface of the hub, resisting the resilient force of the spring, by the coupling element. When the coupling element is rotated more than one time the protruded pin is engaged with a stationary projection to prevent the type wheel from rotating, with a result that the pin is aligned with a notch formed on the coupling element and fitted into the same for latching the type wheel against the drive shaft in rotational direction.
380849
Borden Ladner Gervais Llp
Brother Kogyo Kabushiki Kaisha
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