INSULATED TUBES SUCH AS HEAT

Brand	Owner	Address	Description
WICU	KABEL-UND METALLWERKE GUTEHOFFNUNGSHUTTE AKTIENGESELLSCHAFT	BOX 260 BOX 260 3000 HANNOVER, GERMANY 3000 HANNOVER Germany	Insulated Tubes Such as Heat Insulated Copper Tubes for Refrigerators and for Installation in Homes for the Transportation of Cold and Hot Fluids;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

A rotary SMA actuator includes an SMA assembly having a plurality of grooves formed therein to form a plurality of concentrically arranged SMA tubes. A heater element is disposed against an input end of the SMA tubes and generates heat when electrical current is applied thereto. The heat is used to heat the SMA tubes, which causes an angular deflection of each of the tubes at an output end thereof. An innermost one of the SMA tubes is used as an output member and its angular deflection is the sum of the angular deflections of all of the SMA tubes. The actuator is of a smaller size and lighter weight than electrical, mechanical, hydraulic or pneumatic actuators of comparable torque output. The actuator also provides greater deflection capability than similarly sized SMA type actuators that do not employ concentric tubes.