Patent ID: 7273005

Claim:
A coffee grinder assembly comprising: a housing; a first, lower grinding wheel support member and a first, lower grinding wheel; a second, upper grinding wheel support member and a second, upper grinding wheel; at least one of said first and second grinding wheels being rotatably received in said housing; said first, lower grinding wheel support member and said first, lower grinding wheel both comprising first cooperating connecting means for fixing said first, lower grinding wheel in said first, lower grinding wheel support member; said second, upper grinding wheel support member and said second, upper grinding wheel both comprising second cooperating connecting means for fixing said second, upper grinding wheel in said second, upper grinding wheel support member; each of said first and second cooperating connecting means being designed as a rotational closure in which a mutual rotation of said first, lower grinding wheel support member and said first, lower grinding wheel as well as of said second, upper grinding wheel support member and said second, upper grinding wheel in each case provides for an interlocking closure that is driven in its locked position under the influence of the torque force occurring during the grinding operation.