Road finishing float apparatus

Claim 1

IN A FLOAT APPARATUS RELEASABLY COUPLED TO A POWER DRIVEN VEHICLE AND INCLUDING A FLOAT FOR DRAG MOVEMENT OVER A NEWLY LAID CONCRETE BED TO FINISH THE TOP SURFACE OF THE CONCRETE BED, A FLOAT SUPPORT SECTION INCLUDING LATERALLY ADJUSTABLE SIDE CHANNELS HAVING A U-SHAPED CROSS SECTION, A PAIR OF COUPLING CHANNELS HAVING A CROSS-SECTION CORRESPONDING TO THE SIDE CHANNELS, PIVOT MEANS HAVING A VERTICAL PIVOT AXIS AND CONNECTING THE ENDS OF THE COUPLING CHANNELS ONE EACH TO THE FORWARD END OF THE SIDE CHANNEL FOR PIVOTING IN A HORIZONTAL PLANE, THE COUPLING CHANNELS EXTENDING FORWARDLY ADJACENT THE POWER DRIVEN VEHICLE FOR SECUREMENT TO THE VEHICLE, RELEASABLE COUPLING MEANS HAVING SEPARABLE COUPLING ELEMENTS SECURED TO THE FORWARD END OF THE COUPLING ARMS AND THE POWER DRIVEN VEHICLE RELEASABLY CONNECTING THE FLOAT APPARATUS TO THE VEHICLE, A PAIR OF TRAILING SUPPORT MEMBERS HAVING A CROSS-SECTION GENERALLY CORRESPONDING TO THE SIDE CHANNELS, PIVOT MEANS HAVING A VERTICAL PIVOT AXIS AND CONNECTING THE FORWARD END OF THE TRAILING SUPPORT MEMBERS TO THE BACK END OF THE SIDE CHANNELS FOR PIVOTING IN A HORIZONTAL PLANE, DRIVE MEANS CARRIED BY SAID TRAILING SUPPORT SECTION AND DRIVING THE FLOAT APPARATUS INCIDENT TO ACTUATION THEREOF, AND A CHAIN DRIVE EXTENDING REARWARDLY THROUGH AT LEAST ONE SET OF THE INTERCONNECTED CHANNELS TO THE DRIVE MEANS AND INCLUDING SEPARATE UNITS IN THE COUPLING CHANNEL AND THE TRAILING SUPPORT MEMBER AND A CONNECTING CHAIN CARRIED BY SAID FLOAT SUPPORT SECTION AND RELEASABLY JOINING SAID SEPARABLE UNITS, SAID CONNECTING CHAIN INCLUDING MEANS TO OPEN THE CHAIN FOR RELEASING THE ADJACENT COUPLING MEMBER AND TRAILING SUPPORT MEMBER FOR PIVOTAL MOVEMENT.