Class / Patent application number | Description | Number of patent applications / Date published |
404087000 | Means to install or form joint | 9 |
20080205983 | Slot cutting apparatus - A system for cutting slots in pavement has a first slot cutting vehicle with a cutting assembly having several pairs of rotating blades mounted to the first vehicle and vertically adjustable relative to the vehicle. A lift system moves the first vehicle between a first position wherein the lift is not engaging the ground and a raised position wherein the lift engages the ground and supports the vehicle. A slider assembly uses a hydraulic ram to move the vehicle horizontally on rails relative to the lift when the vehicle is at the raised position. In operation, the vehicle is lifted and the cutting assembly lowered so the blades engage the pavement. The vehicle slides back and forth so the blades cut opposed pairs of sides of slots. Material between each slot is removed with a second cutting vehicle having a cutting assembly with radial blades spaced the same distance apart as the blade pairs of the first vehicle. The blades of the second cutting vehicle have a width equal to the distance between the pairs of blades on the first cutting vehicle to remove material between the cut sides of the slots. | 08-28-2008 |
20110097150 | SCREED WORKING APPARATUS - A screed working apparatus comprising a frame adapted to be mounted on a vehicle, a first elongate beam being mounted on said frame to extend transverse to the normal direction of movement of the apparatus for levelling for levelling loose or plastic materials, wherein a vibration imparting device is coupled to, or mounted on, said first elongate beam to impart vibratory motion to said first elongate beam. | 04-28-2011 |
20110103890 | Concrete joint inserter tool - A concrete crack control joint insertion tool to insert joint forming materials into a concrete mixture or alternatively providing means to create a crack control joint without the use of ancillary material. | 05-05-2011 |
20120082512 | EXPANSION JOINT HOLDER - An expansion joint holder on an existing slab of concrete employs teeth that releasably grip and hold an expansion joint when an adjoining slab is poured, and is provided with an upstanding handle for installation and subsequent removal after the adjoining slab has been poured or placed against the expansion joint. | 04-05-2012 |
404088000 | And means to hold or position dowel | 4 |
20100003080 | DOWEL DEVICE WITH CLOSED END SPEED COVER - Disclosed are a concrete dowel placement devices and a method of utilizing the same. A metallic stud is driven, screwed, or otherwise attached to a form. The stud may be a unitary structure, or may be a hollow tube with conventional fastening means such as nails and screws extending through and holding the hollow tube to the form. A cover having an interior compartment substantially equal in diameter to the stud is slidably placed thereon, and a first enclosed area is developed with a plurality of forms. Concrete is poured into the first enclosed area, and upon curing, the form and the stud are removed, leaving the cover embedded in the concrete. A metallic dowel is inserted into the cover, and a second enclosed area is developed with like configured forms. The metallic dowel extends into the second enclosed area. Upon pouring concrete into the second enclosed area, a cold joint is formed between the concrete of the first enclosed area and the concrete of the second enclosed area, supported and braced by the metallic dowel. | 01-07-2010 |
20110058899 | Paver Having Dowel Bar Inserter With Automated Dowel Bar Feeder - A slipform paver for laying down a strip of concrete over a ground surface and for intermittently inserting into the strip spaced-apart dowel bars that are oriented substantially parallel to the length of the strip that is being laid down. The paver has a dowel bar inserter unit that orients the dowel bars substantially parallel to the travel direction of the paver and places the dowel bars into the concrete as the strip is being laid down. The inserter has a pair of spaced-apart, endless transport chains oriented transversely to the travel direction that substantially extends across a width of the inserter unit. Each chain defines upper and lower strands with turn-around chain sections at respective ends of the chain strands. A plurality of pairs of generally L-shaped opposing cups carried by exterior sides of the chain hold the dowel bars so that they can drop downwardly from the cups towards the concrete strip when the pair of cups holding the dowel bar are on the exterior chain side that faces downwardly. The chains move in a single direction, and a dowel bar holding magazine is located above the upwardly facing sides of the chains. The magazine stores a multiplicity of dowel bars and is configured to gravitationally move the dowel bars towards the chains for pick-up by pairs of L-shaped cups as the chains move the cups past a dowel bar loading station defined by the magazine proximate one of the chain turn-around sections. Elastic bands having ends fixedly attached to the magazine extend generally about a portion of a convexly curved dowel bar engaging surface defined by a wheel and resiliently bias the dowel bars moving along the chain turn-around section against the wheel. | 03-10-2011 |
20140023437 | Paver Having Dowel Bar Inserter with Automated Dowel Bar Feeder - A paver for laying down a strip of concrete and inserting therein dowel bars parallel to the strip. A dowel bar inserter orients the bars and places them into the concrete. A pair of transport chains transverse to the travel direction extends across a width of the inserter. Pairs of generally L-shaped opposing cups hold the bars so that they can drop downwardly from the cups towards the strip. The chains move in a single direction. A dowel bar holding magazine, above the chains, stores bars, and gravitationally moves the bars towards the chains for pick-up by cups as the chains move the cups past a bar loading station. Elastic bands extend about a bar engaging surface defined by a wheel and resiliently bias the bars moving along the chain turn-around section against the wheel. | 01-23-2014 |
20160102435 | PAVER HAVING DOWEL BAR INSERTER WITH AUTOMATED DOWEL BAR FEEDER - A paver for laying down a strip of concrete and inserting therein dowel bars parallel to the strip. A dowel bar inserter orients the bars and places them into the concrete. A pair of transport chains transverse to the travel direction extends across a width of the inserter. Pairs of generally L-shaped opposing cups hold the bars so that they can drop downwardly from the cups towards the strip. The chains move in a single direction. A dowel bar holding magazine, above the chains, stores bars, and gravitationally moves the bars towards the chains for pick-up by cups as the chains move the cups past a bar loading station. Elastic bands extend about a bar engaging surface defined by a wheel and resiliently bias the bars moving along the chain turn-around section against the wheel. | 04-14-2016 |
404089000 | Means to form groove in plastic or uncured roadway | 1 |
20120243938 | Pavement Crack Router - A pavement crack router includes a plurality of bits rotatably mounted to a frame in a direction. A ratchet gear is rotatable with a wheel mounted to the frame. A movable safety release is operably connected to a ratchet rod pivotable between an engaging position engaged with the ratchet gear preventing rotation of the wheel in a reverse direction and a releasing position disengaged from the ratchet gear allowing free rotation of the wheel. An elastomeric inner tube is mounted around a lower end of each of two handle bars and is slideably received in an outer tube fixed to the frame. Two elastomeric washers are mounted around the lower end of each handle bar and sandwich the inner tube within the outer tube. A switch is operable to lower the frame and bits for opening and cleaning a crack in pavement. | 09-27-2012 |