Caster device

In a caster device with blocking of rotation of a caster wheel and of swiveling of a caster-wheel fork by displacement of a spindle which is disposed concentric to the swivel axis of the caster-wheel fork, the spindle being displaceable along the axis and passing through a head plate of the fork and a mounting plate disposed above the head plate;

• and wherein the spindle adjacent a lower end of the spindle carries a disk provided with teeth, the spindle upon displacement to a first position blocks swiveling of the caster-wheel fork by toothed engagement of the disk therewith and, after another displacement to a second position, blocks rotation of the caster wheel by means of a braking action of an impact surface, the latter being located at the lower end side of the spindle and adjustable separately from the disk in a depth of engagement, the improvement wherein
• said teeth of said disk being formed as pockets which are open towards the bottom of the disk and at the periphery but closed at the top of said disk,
• said head plate has a circular shape adjacent which said disk is disposed, said disk having an outer diameter substantially equal to that of said circular shape, said head plate has an inclined portion extending radially away from said circular shape,
• an extension member inside said fork mounted on said fork under the inclined portion of said head plate for toothed engagement with said disk,
• said extension member is formed with a segment having at least one mating tooth at an outer edge of the extension member pointing toward and in overlapping position with respect to said teeth of said disc so as to engage with the teeth of the disk by longitudinal movement of the disk along an axis of said spindle and by slight swiveling movement of the fork.