Patent ID: 11891821
Assignee: nan
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 19:
20. An improved mini-concrete trowel apparatus connected to a mover tool according to claim 19, each of the self-lubricating bearing and spacer member includes a front outer face surface having a plurality of spaced apart bearing holes disposed therein, a plurality of self-lubricating ball bearings disposed within each of the plurality of spaced apart bearing holes with a portion extending outward thereof, and allowing for rotational movement therein; and
the rear inner face surface of the second annular free-wheeling bearing cover guide ring member includes an annular channel along an intermediate portion thereof that engages and receives each of the plurality of self-lubricating ball bearings that extends from each of the plurality of spaced apart bearing holes in the front outer face surface of the annular self-lubricating bearing and spacer member when the second annular free-wheeling bearing cover guide ring member is secured to the first upper and lower fastening clip members of each of the plurality of spaced apart non-rotating arm members by the second a plurality of upper and lower spaced apart fastening clip members of the second annular free-wheeling bearing cover guide ring member, and allows the second annular free-wheeling bearing cover guide ring member to move in opposite directions when abutting against wall structures and upstanding stub obstructions disposed within a concrete surface.