Abstract: An exemplary manipulator includes arms, an inlet conduit, and sealing members. The arms are rotatably joined. The inlet conduit extends into one of the arms and non-combustible gas is introduced into the arms via the inlet conduit. The sealing members are disposed where two corresponding of the arms are rotatably joined together. The manipulator is doubly protected from infiltration by unwanted gases by the high pressure gas in the manipulator and by the sealing members.

Abstract: An exemplary extractor includes a support member, a contact member and a sleeve. The contact member is fixed on an end of the support member. The sleeve is slidably sleeved on the support member. Extraction protrusions are formed on an end of the sleeve, and a handle bar is formed on the other end of the sleeve.

Abstract: A manipulator includes an arm body, a cable, and at least one cover fixed on the arm body. The arm body has at least one friction portion over which the at least one cover covers. The at least one cover separates the cable from contacting with the friction portion, thus protects the cable from being damaged by the friction portion.

Abstract: A robot arm assembly includes a hollow wrist housing, a wrist rotatably connected to the wrist housing, a first driver, a first transmission mechanism, a rotary member, a second driver, and a second transmission mechanism. The first driver is assembled within the wrist housing for driving the wrist to rotate relative to the wrist housing along a first rotary axis. The first transmission mechanism is also assembled within the wrist housing and is positioned between the wrist and the first driver. The rotary member is rotatably assembled to a distal end of the wrist along a second rotary axis. The second driver is assembled within the wrist housing for driving the rotary member to rotate. The second transmission mechanism is assembled within the wrist housing, and is positioned between the second driver and the rotary member.

Abstract: A rotary joint includes a shaft, at least one input member defining an input hole rotatably sleeved on the shaft, and a plurality of sealing members positioned between the shaft. the at least one input member and an output member are fixed on the shaft. The shaft, the at least one input member, and the sealing members defines a circular channel cooperatively communicating with the input hole. The output member defines at least one output hole corresponding to the input member. The shaft defines at least one transmission hole intercommunicating the at least one output hole and the circular channel.

Abstract: A robot arm assembly includes a support arm, a lower arm rotatably connected to the support arm, an upper arm rotatably connected to the lower arm, a first driver for driving the lower arm, a first transmission transferring power from the first driver to the lower arm, a second driver for driving the upper arm, and a second transmission transferring power from the second driver to the upper arm. The first and second drivers are mounted on the support arm. The second transmission includes a belt assembly, a beveled gear assembly driven by the belt assembly, and a speed reducer coupled to the upper arm.

Abstract: A robot arm assembly includes a first link, a second link, and a joint rotatably connecting the first link and the second link. The joint includes an actuator mounted on the first link, a harmonic drive including a wave generator, a flex spline fitting over the wave generator, and a circular spline engaging the flex spline, and a belt drive between the actuator and the harmonic drive. The flex spline is fixed to the first link, the circular spline is fixed to the second link, and the belt drive transmits the rotational movement from the actuator to the wave generator.

Abstract: A manipulator includes a first arm, a second arm, a joint assembly, and many connecting members. The first arm defines a first axle hole. The second arm defines a second axle hole and two openings adjacent to the second axle hole. The joint assembly is received in the first arm and rotatably joins the first arm and the second arm. Each of the connecting members includes a head portion and a fixing portion. The head portion is received in the first arm. The fixing portion connects the second arm and the joint assembly.

Abstract: An exemplary manipulator includes arms, an inlet conduit, and sealing members. The arms are rotatably joined. The inlet conduit extends into one of the arms and non-combustible gas is introduced into the arms via the inlet conduit. The sealing members are disposed where two corresponding of the arms are rotatably joined together. The manipulator is doubly protected from infiltration by unwanted gases by the high pressure gas in the manipulator and by the sealing members.

Abstract: An exemplary extractor includes a support member, a contact member and a sleeve. The contact member is fixed on an end of the support member. The sleeve is slidably sleeved on the support member. Extraction protrusions are formed on an end of the sleeve, and a handle bar is formed on the other end of the sleeve.

Abstract: A manipulator includes an arm body, a cable, and at least one cover fixed on the arm body. The arm body has at least one friction portion over which the at least one cover covers. The at least one cover separates the cable from contacting with the friction portion, thus protects the cable from being damaged by the friction portion.