HAND OPERATED ROTARY HANDLE WITH LOCKOUT

Rotary handle device (10) includes a coupling mechanism (42, 44) between the handle (12) and a driven member (14). The handle is rotated about an axis (20) and can also be axially moved between first and second positions. When the handle is in the first axial position it is operatively engaged with the driven member, and when the handle is in its second axial position it is operatively disengaged from the driven member. The handle drives the driven member via a coupling mechanism in the form of a keyed coupling between the handle and the driven member. The handle can be locked or receive a lock out device against rotation when it is in its second axial position. The keyed coupling and/or the pin and track arrangement can be used to permit axial movement of the handle only when the handle is in a predetermined orientation. The handle mechanism is shown in combination with a rotary operated valve having a valve stem as the driven member. A rotary handle (12) includes a coupling mechanism between the handle (12) and a driven member (14). The handle (12) is rotated about an axis (20) and can be axially moved between first and second positions. When the handle is in the first axial position it is operatively engaged with the driven member (14) and when the handle (12) is in its second axial position it is operatively disengaged from the driven member (14). The handle (12) drives the driven member (14) via a coupling mechanism in the form of a keyed coupling (42, 42a, 44) between the handle (12) and the driven member (14). The handle (12) can be locked or receive a lock out device against rotation when it is in its second axial position. A pin (30) and track (62) arrangement can be used to permit axial movement of the handle (12) only when the handle (12) is in a position determined by the location of a slot (68) in the handle (12). La présente invention concerne une poignée tournante (12) séparée d'un élément mené (14) par un mécanisme d'accouplement. La poignée tourne sur son axe (20) et peut être déplacée axialement entre deux positions. Selon qu'elle se trouve dans la première ou la seconde position axiale, la poignée est solidaire ou désolidarisée de l'élément mené (14). L'entraînement de l'élément mené (14) se fait par l'intermédiaire d'un accouplement à clavette (42, 42a, 44) entre la poignée (12) et ledit élément mené (14). La poignée (12) peut être bloquée ou recevoir un dispositif qui l'empêche de tourner lorsqu'elle se trouve sur la seconde position a