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US 4,068,970 AGranted
Concrete finishing machines
AssigneeCMI Corporation
InventorMurray A. Rowe
Life of this patent
Estimating the term…
Abstract
A concrete finishing machine embodying an elongated supporting frame for extending across a roadway, or the like, and having a conveyor screw projecting from one side of the frame for advancing and spreading concrete ahead of the machine and having screed mechanism below the supporting frame for striking-off, smoothing and vibrating such spread concrete.
Claims9
A concrete finishing machine comprising
- a. an elongated supporting frame,
- b. means mounted on said frame for moving said frame along a highway in a direction transverse to the length of said frame,
- c. supporting means mounted on said frame for movement longitudinally thereof,
- d. means mounted on said frame for reciprocating said supporting means longitudinally of said frame,
- e. an elongated conveyor screw
- 1. mounted on and carried by said supporting means for movement therewith longitudinally of said frame in a direction transverse to the length of said screw, and
- 2. projecting generally horizontally from one longitudinal side of said frame for moving concrete away from said one side upon rotation of said screw,
- f. means mounted on said supporting means for rotating said screw,
- g. an elongated screed,
- h. means mounting said screed on said frame in substantially directly underlying parallel relation thereto in position to engage concrete underlying said frame,
- i. means on said supporting frame for longitudinally reciprocating said screed, and
- j. means on said screed for vertically vibrating the latter,
- k. said means mounted said screed comprising
- 1. two pairs of substantially horizontally extending parallel tracks mounted on respective end portions of said screed and disposed thereabove in substantially parallel relation to said screed,
- 2.
12 more elements
A concrete finishing machine comprising
- a. an elongated supporting frame,
- b. means mounted on said frame for moving said frame along a highway in a direction transverse to the length of said frame,
- c. supporting means mounted on said frame for movement longitudinally thereof,
- d. means mounted on said frame for reciprocating said supporting means longitudinally of said frame,
- e. an elongated conveyor screw
- 1. mounted on and carried by said supporting means for movement therewith longitudinally of said frame in a direction transverse to the length of said screw, and
- 2. projecting generally horizontally from one longitudinal side of said frame, in the direction of movement of the latter along such a highway, for moving concrete away from said one side upon rotation of said screw,
- f. means mounted on said supporting means and operatively connected to said screw for rotating said screw,
- g. means operatively connected to said supporting means for moving said screw upwardly and downwardly relative to said frame,
- h. elongated screed means mounted on said frame in substantially directly underlying parallel relation thereto in position to engage concrete underlying said frame,
- i. means operatively connected to said screed means for raising and lowering the latter,
- j. means on said supporting frame and operatively connected to said screed means for longitudinally reciprocating said screed means, and
- k. means on said screed means for vertically vibrating the latter.
10 more elements
Dependencies are inferred from the claim text.