Rotary trowel for troweling polymer/aggregate toppings on substrates
AssigneeAdvanced Coatings, Inc.
InventorMichael Neff
Life of this patent
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Abstract
A fluid driven adjustable speed rotary trowel for troweling a resin/aggregate topping over a substrate weighs not more than 40 pounds nor less than 20 pounds. The attack angle of the troweling blades is adjustable either manually or continuously and automatically by angle-sensing and adjusting means which is also fluid driven without the need to stop the trowel during operation. Aggregate/resin ratios of 5:1 or less will trowel to a smooth finish.
Claims4
A light weight rotary power trowel with a multiplicity of rotating troweling blades which have an attack angle which is adjustable relative to a surface for finish troweling a movable aggregate/-resin topping on a substrate comprising:
- (a) a boom having an upper end and a lower end with a hand hold disposed transversely to the upper end;
- (b) attack angle adjustment means;
- (c) a panel with controls situated on the hand hold for operating the trowel and the attack angle adjusting means;
- (d) a safety frame attached to the arm's lower end for holding
- (1) a fluid driven adjustable speed rotary motor with a shaft to which are attached the troweling blades disposed equiangularly and radially about the shaft, each blade being planarly rectangular and having a major attack surface adjacent to and in contact with the movable topping so as to form therewith the attack angle;
- (d) control means situated on the panel in cooperative contact directingly with the attack angle adjusting means;
- (e) the rotary trowel being of a mass not greater than about 40 pounds nor less than about 20 pounds.
Dependencies are inferred from the claim text.