Abstract: An endobronchial tube with a single lumen air flow passage is disclosed. The endobronchial tube includes three balloon cuffs, two longitudinally spaced to engage the trachea and one positioned within the bronchus of the patient, and dual air outlet ports. One of the air outlet ports is positioned between the two balloon cuffs within the trachea of the patient and the other air outlet port is positioned at a distal end of the tube, so that it will exit to the bronchus in use. The tube affords the capability of selectively ventilating one or both lungs of the patient after intubation, by inflating one or more of the cuffs. Additionally, this capability is provided with a single larger diameter air passage lumen than is available from double lumen endobronchial tubes of the prior art.

Abstract: In a vehicle with a power source for moving said vehicle and for spreading liquid material on a road surface a material distributing apparatus is provided which includes a hydrostatic transmission and associated control mechanism for automatically maintaining a constant application rate of the material to the road surface in response to changes in the width of the application pattern. The hydrostatic transmission is responsive to the power source for providing a controlled rate of flow of the liquid material from the tank of the distributing apparatus, to a discharge element of the apparatus and onto the road surface so as to maintain a constant rate of application for the material despite changes in the speed of the vehicle. A pattern adjustment mechanism is provided for adjusting the pattern provided by the discharge element.