초록 ▼

Roadway crack sealing apparatus (20) which includes a mobile vehicle (26) with a forward crack sealing assembly (22) and a following finishing assembly (24). The assembly (22) includes laterally spaced apart fill and sealant hoppers (30, 36) each equipped with selectively openable outlets (32, 34, 3

Roadway crack sealing apparatus (20) which includes a mobile vehicle (26) with a forward crack sealing assembly (22) and a following finishing assembly (24). The assembly (22) includes laterally spaced apart fill and sealant hoppers (30, 36) each equipped with selectively openable outlets (32, 34, 38) and an elongated roadway crack sighting passageway (128) therebetween. The fill hopper preferably has a pair of outlets (32, 34), with the sealant hopper (38) between the latter so that a crack is sealed by sequential application of fill, sealant and additional fill. In use, an operator within the vehicle compartment (162) visually locates a crack (28) through the passageway(128), and steers the vehicle (26) accordingly; the operator also manipulates appropriate controls for selectively opening the outlets (32, 34, 38). The finishing assembly (24) includes a series of lateral brushes which sweep and finish the sealed crack and adjacent roadway.

대표청구항 ▼

Roadway crack sealing apparatus (20) which includes a mobile vehicle (26) with a forward crack sealing assembly (22) and a following finishing assembly (24). The assembly (22) includes laterally spaced apart fill and sealant hoppers (30, 36) each equipped with selectively openable outlets (32, 34, 3

Roadway crack sealing apparatus (20) which includes a mobile vehicle (26) with a forward crack sealing assembly (22) and a following finishing assembly (24). The assembly (22) includes laterally spaced apart fill and sealant hoppers (30, 36) each equipped with selectively openable outlets (32, 34, 38) and an elongated roadway crack sighting passageway (128) therebetween. The fill hopper preferably has a pair of outlets (32, 34), with the sealant hopper (38) between the latter so that a crack is sealed by sequential application of fill, sealant and additional fill. In use, an operator within the vehicle compartment (162) visually locates a crack (28) through the passageway(128), and steers the vehicle (26) accordingly; the operator also manipulates appropriate controls for selectively opening the outlets (32, 34, 38). The finishing assembly (24) includes a series of lateral brushes which sweep and finish the sealed crack and adjacent roadway. im 5 wherein a temperature sensor is located within the chamber, the sensor being in connection with thermostatic control means. 7. A method of heating a processing chamber to an operating temperature, the chamber being located within an insulated housing, the method comprising the steps of heating the air within the insulated housing, directing the heated air in a direction away from the chamber, circulating the heated air throughout the housing and rotating the chamber within the heated air, the chamber thus being heated to a uniform temperature throughout. 8. A method as claimed in claim 7 wherein the chamber is made of a material having a thermal conductivity greater than 1.47×10-3Watt/cm/degree K. 9. A method as claimed in claim 7 wherein the wall of the chamber has a cross-section such that overall uniformity of temperature is maintained across the chamber. 10. A method as claimed in claim 7 wherein the cross-section of the wall of the chamber is substantially uniform throughout. 11. A method as claimed in claim 7 wherein the insulated housing is divided into two sections separated by a baffle arrangement, a first section housing the processing chamber and a second section housing means for heating and circulating the air. 12. A method as claimed in claim 7 wherein the heater is controlled by means of a thermostat, the thermostat receiving signals from a temperature sensor located within the chamber.