Abstract: An exemplary flat heat pipe includes a hollow, flattened casing and a first wick structure and a second wick structure received in the casing. The casing includes a top plate and a bottom plate opposite to the top plate. The first wick structure is formed by weaving wires, and the second wick structure is made of sintered metal powder. The first and second wick structures are disposed at inner sides of the bottom and top plates of the casing, respectively. The first and second wick structures contact each other. The casing defines two vapor channels at opposite lateral sides of the combined first and second wick structures, respectively.

Abstract: A mechanism for synchronously varying pitch of a multi-blade rotor, such as rotors used in wind or hydraulic generator and helicopter is provided in the present invention.

Abstract: An exemplary flat heat pipe includes a hollow, flattened casing and a first wick structure and a second wick structure received in the casing. The casing includes a top plate and a bottom plate opposite to the top plate. The first wick structure is formed by weaving wires, and the second wick structure is made of sintered metal powder. The first and second wick structures are disposed at inner sides of the bottom and top plates of the casing, respectively. The first and second wick structures contact each other. The casing defines two vapor channels at opposite lateral sides of the combined first and second wick structures, respectively.

Abstract: An exemplary flat heat pipe includes a hollow, flattened casing and a first wick structure and a second wick structure received in the casing. The casing includes a top plate and a bottom plate opposite to the top plate. The first wick structure is formed by weaving wires, and the second wick structure is made of sintered metal powder. The first and second wick structures are disposed at inner sides of the bottom and top plates of the casing, respectively. The first and second wick structures contact each other. The casing defines two vapor channels at opposite lateral sides of the combined first and second wick structures, respectively. A method for manufacturing the heat pipe is also provided.

Abstract: A mechanism for synchronously varying pitch of a multi-blade rotor, such as rotors used in wind or hydraulic generator and helicopter is provided in the present invention.

Abstract: A heat pipe includes a tube body and a sealing member. The tube body is made of titanium and has a sealed end and an open end at two opposite ends of the tube body. The sealing member is attached to the open end and seals the open end of the tube body. The sealing member is made of a material selected from one of copper, aluminum, stainless steel, low-carbon steel, iron, nickel, tungsten, tantalum, molybdenum, rhenium and columbium. The sealing member seals the open end.

Abstract: An exemplary flat heat pipe with an evaporator section and a condenser section includes a hollow casing, and a first wick structure and a second wick structure in the casing. The second structure contacts an inner surface of the casing at the evaporator section. The first structure at the evaporator section includes a first contact portion contacting an inner surface of the second structure, and a first isolated portion from the inner surface of the second structure. The first isolated portion and the inner surface of the second structure define a first channel therebetween. The first structure at the condenser section includes a second contact portion contacting the inner surface of the casing, and a second isolated portion from the inner surface of the casing. The second isolated portion and the inner surface of the casing define therebetween a second channel communicating with the first channel.

Abstract: An exemplary flat type heat pipe includes a hollow, flattened casing and a first wick structure and a second wick structure received in the casing. The casing includes a top plate and a bottom plate opposite to the top plate. The first wick structure includes a plurality of spaced protruding portions and grooves between every two adjacent protruding portions. The second wick structure is made of sintered metal powder. The first and second wick structures are disposed at inner sides of the bottom and top plates of the casing, respectively. The first and second wick structures contact each other. The casing defines two vapor channels at opposite lateral sides of the combined first and second wick structures, respectively.

Abstract: An exemplary flat heat pipe includes a hollow, flattened casing and a first wick structure and a second wick structure received in the casing. The casing includes a top plate and a bottom plate opposite to the top plate. The first wick structure is folded by a steel sheet with a plurality of pores, and the second wick structure is made of sintered metal powder. The first and second wick structures are disposed at inner sides of the bottom and top plates of the casing, respectively. The first and second wick structures contact each other. The casing defines two vapor channels at opposite lateral sides of the combined first and second wick structures, respectively.

Abstract: An exemplary flat heat pipe includes a hollow, flattened casing and a first wick structure and a second wick structure received in the casing. The casing includes a top plate and a bottom plate opposite to the top plate. The first wick structure is formed by weaving wires, and the second wick structure is made of sintered metal powder. The first and second wick structures are disposed at inner sides of the bottom and top plates of the casing, respectively. The first and second wick structures contact each other. The casing defines two vapor channels at opposite lateral sides of the combined first and second wick structures, respectively. A method for manufacturing the heat pipe is also provided.

Abstract: An exemplary flat heat pipe with an evaporator section and a condenser section includes a hollow casing, and a first wick structure and a second wick structure in the casing. The second structure contacts an inner surface of the casing at the evaporator section. The first structure at the evaporator section includes a first contact portion contacting an inner surface of the second structure, and a first isolated portion from the inner surface of the second structure. The first isolated portion and the inner surface of the second structure define a first channel therebetween. The first structure at the condenser section includes a second contact portion contacting the inner surface of the casing, and a second isolated portion from the inner surface of the casing. The second isolated portion and the inner surface of the casing define therebetween a second channel communicating with the first channel.

Abstract: An exemplary flat heat pipe with an evaporator section and a condenser section at opposite ends thereof includes a hollow flat casing, a first wick structure and a solid and sintered second wick structure. The first wick structure includes a top plate and a bottom plate opposite to the top plate. The first wick structure is received in the casing, and extends from the evaporator section to the condenser section. The second wick structure is disposed in the casing at the evaporator section. The second wick structure contacts the top and bottom plates and joins the first wick structure. A method for manufacturing the heat pipe is also provided.

Abstract: An exemplary flat heat pipe with an evaporator section and a condenser section includes a casing, and a first wick structure and a second wick structure in the casing. The casing defines a first vapor channel within the evaporator section. The first wick structure contacts an inner surface of the casing at the condenser section. The first wick structure includes a contact portion in contact with the inner surface of the casing, and an isolated portion from the inner surface of the casing. The isolated portion and the inner surface of the casing cooperatively define therebetween a second vapor channel in communication with the first vapor channel. The second wick structure contacts the inner surface of the casing at the evaporator section. The second wick structure joins the first wick structure at a joint between the evaporator section and the condenser section.

Abstract: A heat pipe includes a casing and a supporting member. The casing is made of titanium and has a first end and a second end at two opposite sides thereof. The first end defines a receiving space therein. The supporting member is made of a material selected from one of copper, aluminum, stainless steel, low-carbon steel, iron, nickel, tungsten, tantalum, molybdenum, rhenium and columbium. The supporting member is received in the receiving space of the first end of the casing. The first end of the casing and the supporting member are integrally cramped and sealed.

Abstract: A heat pipe includes a tube body and a sealing member. The tube body is made of titanium and has a sealed end and an open end at two opposite ends of the tube body. The sealing member is attached to the open end and seals the open end of the tube body. The sealing member is made of a material selected from one of copper, aluminum, stainless steel, low-carbon steel, iron, nickel, tungsten, tantalum, molybdenum, rhenium and columbium. The sealing member seals the open end.

Abstract: In one preferred embodiment, a tester for testing an In-Circuit Testing (ICT) bed of nails fixture includes an interface for connecting a cable, wherein the cable is connected to the ICT bed of nails fixture; a probe connected to one of nails of the ICT bed of nails fixture, wherein the probe is grounded; a display device for displaying a number according with a pin of the interface, wherein the pin is connected to the probe through the cable and the one of the nails of the ICT bed of nails; a testing circuit electrically connected to the display device and the interface for testing continuity of the ICT bed of nails fixture; and a power supply providing voltages to the testing circuit. The tester is small enough to be conveniently moved. Thus, testing of the ICT bed of nails fixture may be easily carried out.

Abstract: In one preferred embodiment, a tester for testing an In-Circuit Testing (ICT) bed of nails fixture includes an interface for connecting a cable, wherein the cable is connected to the ICT bed of nails fixture; a probe connected to one of nails of the ICT bed of nails fixture, wherein the probe is grounded; a display device for displaying a number according with a pin of the interface, wherein the pin is connected to the probe through the cable and the one of the nails of the ICT bed of nails; a testing circuit electrically connected to the display device and the interface for testing continuity of the ICT bed of nails fixture; and a power supply providing voltages to the testing circuit. The tester is small enough to be conveniently moved. Thus, testing of the ICT bed of nails fixture may be easily carried out.