Machine for surfacing floors
OwnerPeter Pertlinventor
Life of this patent
Estimating the term…
Abstract
A machine for surfacing floors by laying down a floor covering compositions, as for example asphalt, comprises an anchoring base that may be braced between two floors or bolted to the floor under it. On the base there is a pivoting boom made up of articulated links with upright pivot axes. At its outer end, there is a floor working head fixed on the boom. The base is made up of two separate leveling units placed at 90 deg to each other as well as a height adjustment unit. By providing a separate anchoring base, it is possible for the floor surfacing machine to be used both indoors and outdoors. It also allows simple and accurate leveling of the end of the boom and facilitates the working of a very wide range of different flooring compositions over large areas.
Claims20
In a machine for surfacing floors by spreading a floor covering material and forming such material on said floor, of the type comprising a supporting and load bearing base, a pivoting boom mounted on said base for pivoting motion about a generally upright axis at said base, said boom being made up of articulated links with upright pivot axes therebetween, a floor working head mounted on an end of said boom furthest from said base, and first and second boom leveling units on said base for acting in planes at a right angle to each other, the improvement comprising bracing means joined to said base and cooperating with at least one floor, said first and second leveling units being arranged for movement relative to said bracing means of said base and including an adjustment and support plate pivotally joined to said base and means connecting said adjustment and support plate to said boom for leveling said boom in generally all positions thereof about said base, and a height adjustment means located proximate said floor working head for positioning said head at a desired elevation relative to said floor.
A floor working head for a floor surfacing machine comprising:
- (a) a frame;
- (b) a horizontal driving shaft journaled for rotation with respect to said frame;
- (c) a plurality of paddles each having a planar working face for engaging the floor to be surfaced with a predetermined pressure, said paddles being operatively coupled to said shaft so as to be driven about generally vertical axes with the path traced by at least two of said paddles intersecting in a generally horizontal plane;
- and
- (d) control means for sensing the surface contour of the floor as it is being worked upon for adjusting the pressure between said working faces of said paddles and said floor.
A floor working head for a floor surfacing machine, comprising:
- (a) a frame;
- (b) first and second sprocket drums journaled for rotation on said frame about parallel, spaced-apart axes;
- (c) an endless chain comprised of a plurality of hinged plates surrounding said first and second sprocket drums;
- (d) means supported on said frame for driving one of said first and second drums for moving said plates across the floor being surfaced;
- and
- (e) vertically adjustable floor surface engaging means mounted on said frame for controlling the pressure between the floor being surfaced and said ones of said plurality of hinged plates contacting the floor.
Dependencies are inferred from the claim text.