Abstract: The present invention provides a latching guide structure arranged inside a door of semiconductor carrier. The latching guide structure comprises an upper latching part, a lower latching part, at least one elastic unit and a driver. Moreover, a first guiding portion of the upper latching part is matched with a second guiding portion of the lower latching part, therefore to define the installation space for the at least one elastic unit. On the other hand, the driver simultaneously actuates an upper actuating unit of the first guiding portion and a lower actuating unit of the second guiding portion to linearly move in reverse direction therebetween. The range of the linear motion of the upper actuating unit and the lower actuating unit represents the compression or extension of the at least one elastic unit, determining to control the open/close status of the upper latching part and the lower latching part.

Abstract: The present invention provides a latching guide structure arranged inside a door of semiconductor carrier. The latching guide structure comprises an upper latching part, a lower latching part, at least one elastic unit and a driver. Moreover, a first guiding portion of the upper latching part is matched with a second guiding portion of the lower latching part, therefore to define the installation space for the at least one elastic unit. On the other hand, the driver simultaneously actuates an upper actuating unit of the first guiding portion and a lower actuating unit of the second guiding portion to linearly move in reverse direction therebetween. The range of the linear motion of the upper actuating unit and the lower actuating unit represents the compression or extension of the at least one elastic unit, determining to control the open/close status of the upper latching part and the lower latching part.

Abstract: A gas turbine engine of the two shaft free turbine type has a first gasifier turbine for driving a compressor to supply air to a combustor for combustion with fuel to produce motive fluid for driving the compressor turbine and a second free wheeling power turbine. An air brake with a compressor impeller directly coupled to the power turbine has an inlet and an exhaust and a close coupled iris throttle assembly for regulating the inlet flow of air into the compressor to obtain maximized power turn down ratios without aerodynamic instability.

Abstract: A sheet metal fan blade of improved performance and efficiency has a varying camber angle and chord angle along radial positions of the blade, such that the angle of attack along at least 70% of the length of the blade is not less than 2.degree. or more than 10.degree.. The fan blade construction exhibits utility in an automotive radiator cooling system.