Abstract: The flow of a fluid at low flow rates is measured in a flow sensing assembly and controlled without introducing measuring devices into the fluid flow path. The flow sensing assembly is enclosed in a housing to lessen ambient and fluid temperature change effects on the measurements obtained. As the fluid is flowing through tubing in the flow sensing assembly, the tubing is heated to impart heat to the fluid. Heat sensors are attached at spaced positions from each other along the tubing in the direction of fluid flow to sense temperatures. The amount of heat applied to the tubing is controlled to maintain an established temperature differential between the heat sensors. The amount of heat applied is measured to provide an accurate and proportional indication of the fluid flow rate.

Abstract: The flow of a fluid at low flow rates is measured in a flow sensing assembly and controlled without introducing measuring devices into the fluid flow path. The flow sensing assembly is enclosed in a housing to lessen ambient and fluid temperature change effects on the measurements obtained. As the fluid is flowing through tubing in the flow sensing assembly, the tubing is heated to impart heat to the fluid. Heat sensors are attached at spaced positions from each other along the tubing in the direction of fluid flow to sense temperatures. The amount of heat applied to the tubing is controlled to maintain an established temperature differential between the heat sensors. The amount of heat applied is measured to provide an accurate and proportional indication of the fluid flow rate.

Abstract: The flow of a fluid at low flow rates is measured and controlled without introducing measuring devices into the fluid flow path. As the fluid is flowing through tubing, the tubing is heated to impart heat to the fluid. Heat sensors are attached at spaced positions from each other along the tubing in the direction of fluid flow to sense temperatures. The amount of heat applied to the tubing is controlled to maintain an established temperature differential between the heat sensors. The amount of heat applied is measured to provide an accurate and proportional indication of the fluid flow rate.

Abstract: The flow of a fluid at low flow rates is measured and controlled without introducing measuring devices into the fluid flow path. As the fluid is flowing through tubing, the tubing is heated to impart heat to the fluid. Heat sensors are attached at spaced positions from each other along the tubing in the direction of fluid flow to sense temperatures. The amount of heat applied to the tubing is controlled to maintain an established temperature differential between the heat sensors. The amount of heat applied is measured to provide an accurate and proportional indication of the fluid flow rate.

Abstract: A supporting part in the form of a boot-like partial shoe, made of substantially rigid material, and which is open at the front and laterally encloses the rear area of the foot and also a portion of the lower part of the leg, with an opening in the supporting part at least in the area of an anklebone and fastener elements beside the front opening. The front area of the partial shoe located between the front edge and the opening for the anklebone is interrupted and substantially forms two tabs which overlap at their end portions. Swivel joints are operably arranged between the substantially overlapping end areas of the two tabs for enabling restrained relative motion between the substantially overlapping end portions of the two tabs. The interruption in the front area of the partial shoe ensures elimination of compressive and tensile stresses on the front area when the support is being worn and particularly when the wearer is walking.