초록 ▼

A screed device in a road-paving vehicle such as an asphalt finisher, enabling the width of pavement to be steplessly changed up to about three times the width of the main screed through a simple operation. The screed device is so constituted that a pair of extensible screeds 15, 16 having a width n

A screed device in a road-paving vehicle such as an asphalt finisher, enabling the width of pavement to be steplessly changed up to about three times the width of the main screed through a simple operation. The screed device is so constituted that a pair of extensible screeds 15, 16 having a width nearly equal to the width of a main screed 7 are arranged back and forth in the direction of progress of the main screed, wherein supports 27, 28 are allowed to move in the direction of width of pavement being supported by support portions 23, 24 provided on both sides at the rear upper portions of the main screed 7, said extensible screeds 15, 16 are supported by said supports 27, 28 so as to be freely moved in the direction of width of pavement, and the extensible screeds 15, 16 are moved by the feeding devices such as hydraulic cylinders in the directions of width of pavement but opposite to each other from the rear positions of the main screed 7.

대표청구항 ▼

A screed device in a road-paving vehicle such as an asphalt finisher, enabling the width of pavement to be steplessly changed up to about three times the width of the main screed through a simple operation. The screed device is so constituted that a pair of extensible screeds 15, 16 having a width n

A screed device in a road-paving vehicle such as an asphalt finisher, enabling the width of pavement to be steplessly changed up to about three times the width of the main screed through a simple operation. The screed device is so constituted that a pair of extensible screeds 15, 16 having a width nearly equal to the width of a main screed 7 are arranged back and forth in the direction of progress of the main screed, wherein supports 27, 28 are allowed to move in the direction of width of pavement being supported by support portions 23, 24 provided on both sides at the rear upper portions of the main screed 7, said extensible screeds 15, 16 are supported by said supports 27, 28 so as to be freely moved in the direction of width of pavement, and the extensible screeds 15, 16 are moved by the feeding devices such as hydraulic cylinders in the directions of width of pavement but opposite to each other from the rear positions of the main screed 7. 2, wherein the externally threaded member has a drivable head orientated towards the first and second apertures. 5. The system of claim 4, wherein the drivable head has a hexagonal socket for driving by an Allen key. 6. The system of claim 1, wherein the resiliently mounted detent member comprises a button portion which can pass through the first and second apertures and a shoulder portion which abuts against an inner surface of the first tubular member, and wherein the resiliently mounted detent member comprises a helical spring acting between the button portion and the first clamping member. 7. The system of claim 1, wherein the first and second clamping members are provided with an end bearing surface having a shape corresponding to an internal surface of the first tubular member. 8. The system of claim 1, wherein the second clamping member has a sleeve portion which fits around a portion of the first clamping member so as to allow relative axial movement of the first and second clamping members in the clamping direction. 9. The system of claim 1, wherein the first tubular member is provided with two substantially diametrically opposed, longitudinally extending slits adapted to permit resilient deformation of the portions of the tubular member between the slits in a direction perpendicular to the plane of the slits. 10. The system of claim 9, wherein the first and second clamping members are positioned such that the clamping direction is perpendicular to the plane of the slits. 11. The system of claim 1, wherein the first and second tubular members are of composite construction. 12. The system of claim 1, wherein the first and second tubular members are components of an oar or paddle. NT]US-1664972, 19280300, Dudderar, 292/257; US-2324356, 19430700, Brown, 292/257; US-3744670, 19730700, De Frees, 220/057; US-4157146, 19790600, Svenson, 292/257; US-4248160, 19810200, Carney, Jr. et al., 105/377; US-4388873, 19830600, Carleton et al., 202/257; US-4441431, 19840400, Carney, Jr. et al., 220/314; US-4543889, 19851000, Fritz, 220/314; US-4570816, 19860200, Ferris et al., 220/314; US-4729584, 19880300, Beckerer, Jr., 292/257; US-4768675, 19880900, Coleman, 220/203; US-4934715, 19900600, Johnson, 052/020; US-5158022, 19921000, Dugge et al., 220/314; US-5366317, 19941100, Solimar, 404/025; US-5368347, 19941100, Holtman et al., 292/257; US-5394650, 19950300, Dean, 052/020; US-5438935, 19950800, Seitz, 105/377.11; US-5960980, 19991000, Burke et al., 220/325; US-6076471, 20000600, Burian et al., 105/358; US-6095365, 20000800, Yielding, 220/264