Celebrity Inventors
Mark Twain (Samuel L. Clemens) received Patent No. 121,992 for "An Improvement in Adjustable and Detachable Straps for Garments." He later received two more patents: one for a self-pasting scrapbook and one for a game to help players remember important historical dates.
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| Number | Title | Issue Date |
| 8419313 | Powered roller screed with riser wheel A rotating cylinder cement screeding system having a drive assembly and handle at one end for powering and controlling the screeding system. The rotating cylinder may be defined by one or more tubular screed roller sections of varying lengths, thereby allowing a use... | 04/16/2013 |
| 8353642 | Screed for road finishing machine In a screed with a basic screed and at least one extendable screed movable relative to the basic screed with a hydraulic cylinder and an electro-hydraulic control comprising a magnet-actuated directional control valve for at least controlling the direction of the hy... | 01/15/2013 |
| 8267619 | Road paver A road paver F has a paving screed E the working width of which can be adjusted continuously. In order to further enlarge the working width in steps at least one paving screed extension can be mounted. A distributing auger is supported in a distributing auger suppor... | 09/18/2012 |
| 8182173 | Portable vibratory concrete wet screed with remote grade indicator and folding handles A portable vibratory wet concrete screed includes a blade, an exciter that is selectively driven to induce vibrations in the blade, at least one operator-manipulated handle connected to the blade and extending upwardly and rearwardly, a laser receiver mounted on the... | 05/22/2012 |
| 8162565 | Break-away material retainer for paving vehicles A material anti-segregation device is for a paving vehicle including a tractor, a screed for forming a mat of paving material on a base surface, and an auger. The anti-segregation device includes a plurality of flexible, elongated barrier members each coupled with t... | 04/24/2012 |
| 8152409 | Apparatus for screeding concrete An apparatus for screeding concrete to produce a level finished surface includes a rigid frame assembly; a telescopic boom assembly secured directly to the frame assembly; and a screeder head assembly having a plurality of vertically oriented alignment poles secured... | 04/10/2012 |
| 8137026 | Powered roller screed with riser wheel A rotating cylinder cement screeding system having a drive assembly and handle at one end for powering and controlling the screeding system. The rotating cylinder may be defined by one or more tubular screed roller sections of varying lengths, thereby allowing a use... | 03/20/2012 |
| 8128314 | Paving screed and a method for laying a paving mat A paving screed comprises a base screed and extension screeds each of which is support via an extension guiding structure at a guidance fixed in the base screed such that each extension screed can be extended and retracted. A multiple point suspension is provided be... | 03/06/2012 |
| 8104992 | Concrete screed apparatus A concrete screed apparatus is provided which may be used by a pair of workers, each of whom has the screed apparatus mounted to one of their legs or feet. The screed apparatus enables concrete to be easily screeded and properly finished without the workers doing th... | 01/31/2012 |
| 8052347 | Concrete screed with pivoting leading—edge blade for angular positioning thereof A floating screed device has a first section for cutting through plastic concrete and a second section for floating on the plastic concrete. The two sections are pivotally coupled for rotational movement about a pivot point. Elevation of the second section is measur... | 11/08/2011 |
| 8038366 | Wheeled concrete screeding device A wheeled concrete screeding device includes a wheeled unit having wheels for movably supporting a frame portion, and a screed head supported at the frame portion and following behind the wheeled unit when the wheeled unit is moved in a screeding direction. The scre... | 10/18/2011 |
| 8016517 | Ergonomic concrete screed handles A paired set of handles attaching to a board forming a concrete screed to minimize the strain on a person performing concrete finishing work allows for an ergonomic application of downward force applied to the lower end of the handles and application of an upward li... | 09/13/2011 |
| 7959374 | Power roller screed with circular pour attachment A rotating cylinder cement screeding system having a drive assembly and handle at one end for powering and controlling the screeding system. The rotating cylinder is made of tubular screed rollers of varying lengths allowing a user to customize the length of the sys... | 06/14/2011 |
| 7909534 | Apparatus and method for endgate with angle adjustment An endgate comprising a mounting bracket adapted to be attached to a screed assembly, a pivoting plate adapted to be pivotally attached to the mounting bracket, a sliding plate, a pavement contacting surface and a support adapted to be pivotally moved with the pivot... | 03/22/2011 |
| 7651296 | Concrete screed with reinforced screed bar A concrete screed includes a screed bar, a bar mover adapted to move the screed bar over concrete, and a mount coupling the bar mover to the screed bar. ... | 01/26/2010 |
| 7544012 | Power roller screed with multiple screed rollers A rotating cylinder cement screeding system having a drive assembly and handle at one end for powering and controlling the screeding system. The rotating cylinder is made of tubular screed rollers of varying lengths allowing a user to customize the length of the sys... | 06/09/2009 |
| 7491013 | Concrete screed A hand screed for screeding fluid material includes an elongated beam having a bottom surface for disposal adjacent a surface to be screeded and an elongated handle removably connected to the beam. ... | 02/17/2009 |
| 7478973 | Concrete-leveling system A leveling system for freshly poured concrete is provided comprising a hand screed and a hand float. The system includes a laser beam leveling system consisting of a laser transmitter mounted on the hand screed and a laser beam receiver target mounted on the hand fl... | 01/20/2009 |
| 7476053 | Portable form and method for using same for concrete strike-off A form for concrete strike-off has a rigid straightedge assembly and a support coupled to one end of the straightedge assembly. The straightedge assembly includes a grate coupled to the bottom edge of a support bar. The grate extends away from the support bar with a... | 01/13/2009 |
| 7470084 | Ergonomic concrete hand screed An ergonomically-shaped hand screed for levelling and finishing concrete is provided. The screed has a finger relief groove on its rear face and a thumb relief groove on its front face. Both the finger and thumb grooves are positioned nearer the top surface of the s... | 12/30/2008 |
| 7458748 | Strike-off beam and spreader plow assembly for placer/spreader In combination with a placers/spreader having a frame including at least two side bolsters standing parallel to the subgrade path and at least two cross beams spanning the subgrade path forming a conveyor supporting structure. A rail system is attached spanning the ... | 12/02/2008 |
| 7427174 | Electrically heated paving screed This invention relates to screeds used for compacting paving material. The invention provides a screed for a paving machine comprising a sole plate; a tamper adjacent the sole plate; a heating element mounted on the sole plate; and a heat conductor mounted on the so... | 09/23/2008 |
| 7413377 | Extendable walkway system for screed paving machines A walkway extension assembly for a paving machine has main and laterally extendable and retractable screeds and a transversely extending rear catwalk or walkway. The assembly has a laterally extending walkway component extending beneath and on each side of the exist... | 08/19/2008 |
| 7407339 | Powered strike-off plow A wheeled strike-off apparatus is movable over a surface of uncured concrete or subgrade materials and is operable to establish a desired grade of the uncured concrete surface or subgrade surface. The apparatus includes a wheeled support and a plow assembly. The plo... | 08/05/2008 |
| 7396187 | Upright trowel A trowel device for use by an operator in an upright position comprises a trowel blade receiving assembly and a first elongate handle section, operably coupled to and extending away from the blade receiving assembly toward a proximal end of the device. A second elon... | 07/08/2008 |
| 7357596 | Concrete screed with movable leading edge A floating screed device has an elongated float and an elongated blade movably coupled to the elongated float so that the blade is movable in pitch. ... | 04/15/2008 |
| 7357597 | Concrete screed with movable leading edge A floating screed device has an elongated float and an elongated blade movably coupled to the elongated float so that the blade is freely movable in pitch. ... | 04/15/2008 |
| 7320558 | Apparatus for screeding uncured concrete surfaces A screeding apparatus and method for screeding and smoothing an uncured concrete surface includes a vibrating member and a grade setting device adjustably mounted to said vibrating member. The screeding apparatus may include a wheeled support which at least partiall... | 01/22/2008 |
| 7318688 | Screeding apparatus Screeding apparatus includes an elongated support and a strike board extending from a carriage on the elongated support, the support moved by drive structure along spaced side forms. The carriage and strike board are moved relative to the elongated support to engage... | 01/15/2008 |
| 7316520 | Low surface area shearing device An apparatus for use in shearing paving material applied to a surface is provided. This apparatus includes a blade for shearing the asphalt mixture to a desired thickness, cylinders for raising and lowering the blade in response to elevational changes in the surface... | 01/08/2008 |
| 7316523 | Acoustically matched method and apparatus for screeding concrete Methods and apparatus for screeding freshly placed concrete in which the acoustic impedance of the treating equipment is made substantially equal to the acoustic impedance of the concrete slab. Portions of the screed contacting the plastic concrete are matched to an... | 01/08/2008 |
| 7311466 | Apparatus and method for subgrade preparation A subgrade preparation apparatus for preparing a subgrade surface for concrete to be placed thereon includes a base unit positionable on a support surface adjacent to a targeted subgrade area, an extendable boom extending from the base unit, and a subgrade head asse... | 12/25/2007 |
| 7311465 | Strike-off beam and spreader plow assembly for placer/spreader In combination with a placers/spreader having a frame including at least two side bolsters standing parallel to the subgrade path and at least two cross beams spanning the subgrade path forming a conveyor supporting structure. A rail system is attached spanning the ... | 12/25/2007 |
| 7300225 | Apparatus and method for heating road building equipment A method and apparatus for heating hot mix asphalt (HMA), via collecting fumes from HMA while the HMA is on-board a vehicle and in motion within the vehicle, and igniting the HMA with engine exhaust and using the heat of combustion of the HMA to heat HMA, such as vi... | 11/27/2007 |
| 7296948 | Floor mud forming device and methodology A device for preparing a sloped mud surface around a drain prior to setting tile or stone includes one or more arms (i.e., rigid arms) attached to a sleeve and rotatably supported relative to a vertical axis defined by a vertical shaft and horizontal planar base. An... | 11/20/2007 |
| 7293938 | Breakdown screed plate A screed assembly includes a screed plate, a console assembly, and a first and second handles. The various components of the screed assembly are attached to one another with quick connect mechanisms so that they can be disassembled for cleaning and transport and rea... | 11/13/2007 |
| 7287931 | Extendable paving screed A screed assembly for a paving machine includes a main screed portion and an extension screed portion longitudinally extendable from the main screed portion. The extension screed portion includes a variable length coupling portion arranged in a manner sufficient to ... | 10/30/2007 |
| 7284929 | Paver and method for simultaneously casting several paving material layers At least two paving screeds B1, B2 which are distant in operation running direction R are supported at a chassis 1 of a paver F. The paver F is designed for simultaneously casting several paving material layers L1, L2 on top of eac... | 10/23/2007 |
| 7286743 | High dynamic range integrated receiver A high dynamic range integrated (HDRI) receiver includes a variable optical attenuator (VOA) for attenuating an incoming optical signal before the optical signal is directed to a photo-detector for conversion into an electrical signal. An optical block receives the ... | 10/23/2007 |
| RE39834 | Apparatus and method for three-dimensional contouring A contouring device and method for contouring three-dimensionally curved surfaces includes an elongated contouring assembly that is supported at opposite ends by a pair of fluid cylinders. The fluid cylinders are controlled to raise and lower the ends of the contour... | 09/11/2007 |
