Patent ID: 11872536
Assignee: nan
Field: Chemical engineering (Chemistry)
Classification: CPC B  F | IPC B  F

Claim 3:
4. The assembly according to claim 1, wherein said outer disk of each of said ratchets lies flat on a first surface of a respective one of said uprights having said central disk being directed away from said first surface, said central disk having an outer surface, said outer surface having a plurality of teeth each extending outwardly from said outer surface, said teeth being spaced apart from each other and being distributed around said outer surface, said teeth being positioned inside of said outer disk, said teeth having a front surface being oriented perpendicular to said outer surface of said central disk, each of said teeth having a top surface sloping between said front surface and said outer surface of said central disk, said outer surface of said central disk has a recess extending toward a center of said central disk, said recess being exposed with respect to said outer disk.