초록 ▼

An apparatus for paving a narrow gauge trench in a concrete roadway is adapted to be attached to a vehicle having a supply of pressurized hydraulic fluid and includes a frame having opposing ends and operable to be attached to the vehicle. The frame includes a hopper attached at a first end thereof,

An apparatus for paving a narrow gauge trench in a concrete roadway is adapted to be attached to a vehicle having a supply of pressurized hydraulic fluid and includes a frame having opposing ends and operable to be attached to the vehicle. The frame includes a hopper attached at a first end thereof, an auger disposed therein, and a concrete dispensing aperture extending through a lower wall thereof at a second end of the frame opposite the hopper. A strike-off member is hingedly attached to the frame and a roller is hingedly attached to the frame and extends rearwardly of the strike-off member. A hydraulic system is connected to the pressurized hydraulic fluid supply of the vehicle and is operable to control the auger, the roller, and the vertical orientation of the strike-off member and the roller. When the hydraulic system is pressurized by the fluid supply, a concrete mixture is placed into the hopper and the vehicle is oriented adjacent the trench and moved along the longitudinal axis of the trench, the strike-off member and the roller are lowered to the roadway surface, the auger moves the concrete from the first end to the second end of the frame, the concrete exits the frame from through the dispensing aperture, the strike-off member directs the concrete mixture into the trench and the roller smoothes the concrete mixture in the trench and pushes the concrete mixture farther down the trench as the vehicle moves down the longitudinal axis of the trench.

대표청구항 ▼

An apparatus for paving a narrow gauge trench in a concrete roadway is adapted to be attached to a vehicle having a supply of pressurized hydraulic fluid and includes a frame having opposing ends and operable to be attached to the vehicle. The frame includes a hopper attached at a first end thereof,

An apparatus for paving a narrow gauge trench in a concrete roadway is adapted to be attached to a vehicle having a supply of pressurized hydraulic fluid and includes a frame having opposing ends and operable to be attached to the vehicle. The frame includes a hopper attached at a first end thereof, an auger disposed therein, and a concrete dispensing aperture extending through a lower wall thereof at a second end of the frame opposite the hopper. A strike-off member is hingedly attached to the frame and a roller is hingedly attached to the frame and extends rearwardly of the strike-off member. A hydraulic system is connected to the pressurized hydraulic fluid supply of the vehicle and is operable to control the auger, the roller, and the vertical orientation of the strike-off member and the roller. When the hydraulic system is pressurized by the fluid supply, a concrete mixture is placed into the hopper and the vehicle is oriented adjacent the trench and moved along the longitudinal axis of the trench, the strike-off member and the roller are lowered to the roadway surface, the auger moves the concrete from the first end to the second end of the frame, the concrete exits the frame from through the dispensing aperture, the strike-off member directs the concrete mixture into the trench and the roller smoothes the concrete mixture in the trench and pushes the concrete mixture farther down the trench as the vehicle moves down the longitudinal axis of the trench. h that 02/3≤A≤π{(3q)/(2π)}2/3. 6. The ink supply apparatus according to claim 4, wherein another relationship is established such that: 0.9×t1min1, where t1is a time for the meniscus of the ink to restore the exit level from the retreat position, and tminis a minimal period by which said ink jet print head discharges the drop of the ink. 7. The ink supply apparatus according to claim 2, wherein said fluid resistance of said ink supply path is established such that 02/3≤A≤π{(3q)/(2π)}2/3. 9. The ink supply apparatus according to claim 7, wherein another relationship is established such that: 0.9×t1min1, where t1is a time for the meniscus of the ink to restore the exit level from the retreat position, and tminis a minimal period by which said ink jet print head discharges the drop of the ink. 10. The ink supply apparatus according to claim 1 wherein said fluid resistance of said ink supply path is established such that 02/3≤A≤π{(3q)/(2π)}2/3. 12. The ink supply apparatus according to claim 10, wherein another relationship is established such that: 0.9×t1min1, where t1is a time for the meniscus of the ink to restore the exit level from the retreat position, and tminis a minimal period by which said ink jet print head discharges the drop of the ink. nthead, a magenta printhead, and a yellow printhead. 11. The system of claim 1, wherein the at least one ink printhead includes a black printhead, a light cyan printhead, a light magenta printhead, a dark cyan printhead, a dark magenta printhead, and a yellow printhead. 12. The system of claim 1, further comprising a controller for operating the printheads in a mode in which fixer and overcoat are not deposited. 13. The system of claim 1, wherein the fixer and overcoat printheads are half-height. 14. The system of claim 1, wherein the overcoat and fixer printheads are in a separate row from the ink printheads. 15. An inkjet printing apparatus, comprising: a carriage assembly movable, in a scanning direction, for carrying at least one ink printhead, a fixer printhead, and an overcoat printhead; a processor programmed to generate swath data for at least one ink printhead, a fixer printhead and an overcoat printhead during printing; and wherein the carriage assembly provides a staggered arrangement of the printheads such that the fixer and overcoat are deposited in substantially different rows of a print medium from the colored ink as the carriage assembly moves in the scanning direction. 16. The apparatus of claim 15, wherein the carriage assembly provides in-line arrangement of all printheads such that the colored ink, the fixer, and the overcoat are deposited in substantially the same rows of a print medium as the carriage assembly moves in the scanning direction. 17. The apparatus of claim 15, wherein the fixer printhead is located at one end of the in-line arrangement of inkjet printheads, and the overcoat printhead is located at the opposite end of the in-line arrangement. 18. Apparatus comprising a processor programmed to generate swath data for an ink printhead, a fixer printhead, and an overcoat printhead, such that the swath data causes the ink printhead to deposit drops of a colored ink, the fixer printhead to deposit drops of a fixer onto the colored ink, and the overcoat printhead to deposit drops of an overcoat onto the colored ink; and wherein the processor always generates null swath data for a group of ink ejection elements in each printhead. 19. The apparatus of claim 18, wherein the processor is a printer controller. 20. The apparatus of claim 18, wherein the processor generates swath data for the fixer and overcoat printheads from swath data for the ink printhead. 21. The apparatus of claim 18, wherein the processor also generates the swath data for the ink printhead. 22. The apparatus of claim 18, wherein the processor generates swath data for N contiguous groups of each printhead, where integer N>1; and wherein null swath data is always generated for at least one group of each printhead. 23. The apparatus of claim 22, wherein the groups contain the same number of ink ejection elements. 24. The program of claim 23, wherein the program causes the processor to generate swath data for N contiguous groups of each printhead, where integer N>1; and wherein null swath data is always generated for at least one group of each printhead. 25. The program of claim 23, wherein N=4 and the 4 groups contain the same number of ink ejection elements; wherein null swath data is always generated for the third and fourth groups of ink printhead ink ejection elements; and wherein null swath data is always generated for the first and second groups of printhead ejection elements of the first and second protective coating printheads. 26. The method of claim 25, wherein active swath data is sent to only a subset of ink ejection elements in the ink printheads during a first pass, and only a subset of ink ejection elements in the fixer and overcoat printheads during a second pass. 27. The method of claim 25, wherein the ink ejection elements of each printhead are logically divided into N contiguous groups, where integer N>2; and wherein null swath data is always sent to at least one group of each printhead during printing. 2