Philip Joseph Quenzi

Bio: Philip Joseph Quenzi is an academic researcher. The author has contributed to research in topics: Screed & Deflection (engineering). The author has an hindex of 4, co-authored 6 publications receiving 170 citations.

Screeding apparatus and method

Abstract: An apparatus and method are disclosed for pivoting a screed assembly during screeding of placed and/or poured, uncured concrete or like loose, spreadable materials to maintain proper screeding contact by the screeding assembly with the concrete or like material by counteracting the force of concrete or other like material acting against the screed assembly as it is moved along the concrete The apparatus includes a support, preferably of the self-propelled type, a boom and boom mount, and a pivot between the boom and the screed assembly The axis of the pivot extends generally perpendicularly to the screeding direction in which the screed sassmblyis moved A power source, such as a pair of fluid cylinders, rotates the screed about the pivot axis, preferably in response to an electro-hydraulic leveling sensor mounted on the screed The lateral incline of the screed perpendicular to the screeding direction may be controlled about additional pivot axes orthogonal to the first A power operated elevation control is preferably responsive to a fixed laser beam reference plane positioned externally of the screed assembly The boom is telescoping and has multiple sections for extending and retracting the screeding assembly with respect to the support The screed preferably includes a vibration assembly vibrationally isolated from the remainder of the screed for smoothing the concrete

Apparatus and method for controlling laser guided machines

Abstract: A guidance system and method for increasing the accuracy of laser guided machines such as screeds, graders, earth movers, floor saws and floor finishing machines. The system includes a laser beam receiver for sensing a laser reference beam provided off the machine. The laser receiver signals an electrical circuit when the laser beam is sensed in both centered and off-center regions. The electrical circuit operates a controller such as a solenoid operated fluid valve which controls a power source such as a fluid cylinder to move a machine element in one direction, such as raising a concrete screed, when the beam is sensed in the centered region, and in the other direction, such as lowering the screed, when the beam is sensed off-center. The method includes controlling the power source to continuously cycle the machine element between centered and off-centered regions to reduce the dead band, i.e., nonactive tolerance range, of the system.

Concrete finishing apparatus

Abstract: A concrete finishing apparatus and method for smoothing and flattening partially cured concrete to a close-tolerance surface includes a movable unit which is movable and entirely supported on or over a partially cured concrete surface and at least one rotatable finishing member, such as a cylindrical tube, roller or the like, mounted to the movable unit. The rotatable finishing member is positioned at the partially cured concrete surface and rotatable to engage and finish the surface of the partially cured concrete to a high quality, close-tolerance flat and level concrete floor surface. The rotatable finishing member is preferably rotatable in a direction generally opposite to the direction of travel of the movable unit to enhance the finishing process and to carry any cement paste or residue forward with the finishing member to fill in any low areas as the concrete finishing apparatus moves over the partially cured concrete.

Deflection indicating adjustable highway straight-edge

Abstract: A deflection indicating adjustable highway straight-edge. The highway straight-edge is designed to effectively level wet concrete by allowing the user to determine when the device is not straight and provides the user with a means of controlled adjustment for straightening. In the preferred embodiment, a laser light beam and electronic sensing device is used to detect deflection of the straight-edge. Undesirable deflection can be eliminated through the external adjustment of steel tension cables inside the straight-edge tube. In an alternative embodiment of the invention, deflection is detected by means of an electrically conducting wire having contact points to indicate that the straight-edge requires adjustment. In another embodiment, a steel wire or string line stretched tightly inside the straight-edge tube indicates deflection requiring adjustment.

Aparato y metodo para enrasar perfeccionados.

Abstract: UN APARATO (10) Y METODO PARA PIVOTAR UN CONJUNTO MAESTRO (450) DURANTE EL ENMAESTRADO DE HORMIGON INCURADO PARA MANTENER EL ADECUADO CONTACTO DE ENMAESTRADO MEDIANTE EL CONJUNTO DE ENMAESTRADO QUE CONTRARESTA LA FUERZA DEL HORMIGON QUE ACTUA CONTRA EL CONJUNTO DE MAESTRA COMO SI SE DESPLAZARA A LO LARGO DEL HORMIGON. EL APARATO INCLUYE UN SOPORTE AUTOIMPULSADO (12), UN AGUILON (170) Y HERRAJES DE AGUILON (172), Y UN PIVOTE ENTRE EL AGUILON Y EL CONJUNTO MAESTRA. EL EJE DEL PIVOTE SE EXTIENDE GENERALMENTE PERPENDICULAR A LA DIRECCION DE ENMAESTRADO EN EL QUE SE DESPLAZA EL CONJUNTO MAESTRA. UNA FUENTE DE POTENCIA, TAL COMO UN PAR DE CILINDROS FLUIDOS, GIRA LA MAESTRA (472) ALREDEDOR DEL EJE DEL PIVOTE, PREFERENTEMENTE EN RESPUESTA A UN SENSOR DE NIVELACION ELECTROHIDRAULICA MONTADO EN LA MAESTRA. LA INCLINACION LATERAL DE LA MAESTRA PERPENDICULAR A LA DIRECCION DE ENMAESTRADO PUEDE CONTROLARSE ALREDEDOR DE EJES DE PIVOTE ADICIONALES ORTOGONAL AL PRIMERO. UN CONTROL DE ELEVACION SERVOMANDADO ES SENSIBLE A UN PLANO DE REFERENCIA DE RAYO LASER FIJO COLOCADO EXTERIORMENTE AL CONJUNTO DE MAESTRA. EL AGUILON ES TELESCOPICO Y TIENE MULTIPLES SECCIONES (220, 250) PARA EXTENSION Y RETRACCION DEL CONJUNTO DE MAESTRA CON RESPECTO AL SOPORTE. LA MAESTRA PREFERENTEMENTE INCLUYE UN CONJUNTO DE VIBRACION (482,492) AISLADO VIBRACIONALMENTE (POR 478) DEL RESTO DE LA MAESTRA PARA ALISAR EL HORMIGON.

Apparatus and method for three-dimensional contouring

Abstract: A contouring (20) device and method for contouring three-dimensionally curved surfaces includes an elongated contouring assembly (28) that is supported at opposite ends by a pair of fluid cylinders (52,54). The fluid cylinders are controlled to raise and lower the ends of the contouring assembly independently of each other, thereby allowing the contouring assembly to create a three-dimensionally curved surface as it passes over an area to be contoured. The control of one of the fluid cylinders (52) is based on a comparison of the measured position of a first end of the contouring assembly with a profile of the surface to be leveled that is stored in a computer memory. The measurement of the position of the first end of the contouring assembly is achieved by a tracking device (58) which tracks the position of a target (56) positioned on the first end of the contouring assembly and which determines the three dimensional position of the target. A proximity sensor (78) measures the position of the second end of the contouring assembly from a surface and outputs a control signal that adjusts the height of the second end of the contouring assembly to follow the surface. Alternatively, a second target positioned on the second contouring assembly end is tracked by a second tracking device to determine the three-dimensional position of the second end. The contouring assembly preferably has a plow (32), rotating auger (36), and a vibratory screed (34) positioned adjacent and parallel to one another in an orientation transverse to the direction of motion of the contouring assembly. The plow, rotating auger, and vibratory screed are all pivotable about an axis parallel to their longitudinal direction. A pivot or tilting controller controls the tilting of the plow, rotating auger, and vibratory screed to follow the slope of the profile stored in computer memory.

Power tool control system

Abstract: A power tool control system includes a non-contact measurement and alignment device operative with the power tool and enabled to establish various readings, such as power tool settings. A graphical user interface communicatively coupled with the non-contact measurement and alignment device enables user control over and display of the readings from the non-contact measurement and alignment device.

Self-compensating rolling weight deflectometer

Abstract: A rolling weight deflectometer for monitoring deflection of pavement under load The deflectometer incorporates an alignment laser beam emitter that measures vertical displacement of each of a plurality of distance sensors mounted on a horizontal sensor bearer member that bends or vibrates as it is transported over a pavement for deflection measurement The measured vertical displacements, due to member bending, allow the deflectometer to compensate for errors introduced by member bending and thereby provide a more accurate measurement of pavement deflection

Cutter with optical alignment system

Abstract: An optical system mounted on a cutter that has a base and a housing supporting a blade In one embodiment, the optical system may projects first and second indicator lines on the base The optical system may also include a mechanism selectively operable to adjust the first and second lines to indicate the width of the blade

Apparatus for screening and trowelling concrete

Abstract: Disclosed is an apparatus for screeding or trowelling concrete or similar materials. The apparatus has a turret, mounted on a mobile frame. A telescopic boom is mounted in cantilevered fashion on the turret. A machine head, mounted on the distal end of the boom, is rotatable about a vertical axis. An attachment, such as a screed or a trowel, is attached to the machine head. The level and angle of the frame can be set to a selected elevation relative to a rotating laser beam by raising or lowering three hydraulic legs. The machine head can raise or lower the attachment to set the attachment at a selected elevation.