Patent ID: 7931284

Claim:
A caster device comprising a base having a top panel; multiple positioning assemblies being formed on the top panel of the base, and each positioning assembly having two holders being separately and parallelly formed on and protruding from the top panel of the base, and each holder having a distal edge; a support being formed transversely on the distal edge of the holder toward the support of the other holder; and an elongated recess being formed between the top panel of the base and the support, corresponding to the elongated recess of the other holder; and multiple casters being respectively and detachably mounted between the positioning assemblies, and each caster having a mounting panel being mounted in the elongated recesses of the holders and on the supports of the holders and having a positioning surface corresponding to the top panel of the base; and a supporting surface corresponding to and being mounted on the supports of the holders of the corresponding positioning assembly; and a wheel being securely mounted on the supporting surface of the mounting panel and being slidably mounted between the holders of the corresponding positioning assembly.