Resilient drive coupling for floor polishing machine wheels
First Claim
1. A floor polishing machine comprising, a polishing wheel normally elevated at a first Position above a wheel means relative to a support surface and a drive motor, a drive coupling connecting said polishing wheel to said drive motors said drive coupling including a driving housing section connected to said drive motor so as to be rotatable about an axis and a driven housing section to which said polishing wheel is secured, means for elastically connecting said driven housing section to said driving housing section such that said driven housing section is rotatable about said axis and axially moveable from said first position and away from said driving housing section at a predetermined rotational velocity of said driven housing section to a second position so that said polishing wheel moves relative to said wheel means into engagement with the support surface in said second position.
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Accused Products
Abstract
The invention is a single-wheel floor-polishing machine provided with drive wheel comprising two coaxial, opposite cup-shaped elements connected with each other by means of one or more traction elastic elements suitable for raising the polishing wheel from the floor. The upper cup is mechanically connected with the electric motor and the lower cup is connected with the rigid rotary plate that supports the polishing wheel. The polishing wheel rotation generates a centrifugal air vortex under the polishing wheel itself, which results in the formation of an area below normal atmospheric pressure, as a consequence of which the polishing wheel is attracted to the floor. In the starting phase the polishing wheel is raised from the ground and free to rotate; the polishing wheel does not overheat because the pressure is automatically regulated according to the polishing wheel rotation speed, to the type of floor and to the elasticity of the traction springs.
8 Citations
17 Claims
- 1. A floor polishing machine comprising, a polishing wheel normally elevated at a first Position above a wheel means relative to a support surface and a drive motor, a drive coupling connecting said polishing wheel to said drive motors said drive coupling including a driving housing section connected to said drive motor so as to be rotatable about an axis and a driven housing section to which said polishing wheel is secured, means for elastically connecting said driven housing section to said driving housing section such that said driven housing section is rotatable about said axis and axially moveable from said first position and away from said driving housing section at a predetermined rotational velocity of said driven housing section to a second position so that said polishing wheel moves relative to said wheel means into engagement with the support surface in said second position.
- 12. A floor polishing machine comprising, a polishing wheel and a drive motor, a drive coupling connecting said polishing wheel to said drive motor, said drive coupling including a driving member connected to said drive motor so as to be rotatable about an axis and a driven member to which said polishing wheel is secured, an elastic means for connecting said driven member to said driving member such that said driven member is rotatable about said axis and axially moveable relative to said driving housing section from a first position adjacent said driving member to a second position spaced therefrom depending upon the rotational velocity of said driven housing section, a rod extending along said axis, and each of said driving member and said driven member being mounted so as to be rotatable about said rod.
Specification