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

Claim 0:
1. A mini-concrete trowel attachment assembly comprising:
a rotary disk, the rotary disk having a top surface, a bottom surface, a plurality of spaced apart screw openings extending through the top and bottom surfaces, and the rotary disk includes an annular peripheral edge;
a plurality of replacement finishing blades, the plurality of replacement finishing blades including a front surface contact portion, a raised flat rear disk attachment portion, an intermediate portion, the intermediate portion is angularly and integrally connected between the raised flat rear disk attachment portion and the front surface contact portion as a single unit, and the front surface contact portion further includes a trailing edge, and an outer bent edge;
each of the raised flat rear disk attachment portions of each of the plurality of replacement finishing blades includes at least a pair of elongated securing slots disposed thereon for aligning with each of the plurality of spaced apart screw openings in the rotary disk to allow for selective blade adjustments of each of the plurality of replacement finishing blades along each of the at least a pair of elongated securing slots;
a plurality of screw members inserted through the at least a pair of the elongated securing slots and through each of the spaced apart screw openings of the rotary disk for securing each of the plurality of replacement finishing blades directly to the rotary disk at selective blade adjustment positions near and inward of the annular peripheral edge of the rotary disk;
each of the at least a pair of the elongated securing slots allows the rotary disk to be interchangeable with rotary disks of varied sizes and securing each of the plurality of replacement finishing blades of varied sizes directly to the rotary disks of varied sizes at selective blade adjustment positions near and inward of an annular peripheral edge of the rotary disks of varied sizes;
a free-wheeling bearing guide ring assembly co-operably associated to and selectively spaced from and above the top surface of the rotary disk and extending slightly beyond the annular peripheral edge of the rotary disk, wherein each of the plurality of replacement finishing blades are selectively adjusted at and inward of the annular peripheral edge of the free-wheeling bearing guide ring assembly via the at least a pair of elongated slots of each of the plurality of replacement finishing blades to smoothly finish a viscous material surface, around stub obstructions disposed in the viscous material surface, and along wall surfaces; and
a prime mover being attached to the rotary disk for rotating the rotary disk for smoothing and finishing the viscous material surface by each of the plurality of replacement finishing blades.