A lifter system and apparatus having a rotational gib for molding plastic parts, in large mold machines or small mold machines. A core blade is movably mounted with respect to a mold. A gib, such as a rotational gib, is mounted with respect to an ejector plate of the mold. A rotational mount is fixed with respect to the gib. The core blade can be moved and releasably locked at or into different positions with respect to the gib. The rotational mount can be releasably locked with respect to the gib. A detent, a bias element and a spherical surface or other contact surface can be used to hold or fix a position of the core blade with respect to the gib. A second detent, a second bias element and a second spherical surface or other contact surface can be used to hold or fix a position of the rotational mount with respect to the gib.

A shouldering type photographing support is provided, comprising a main frame for coupling components, on which at least one connecting base for fixing a lens or camera is provided; a shouldering assembly connected to the main frame, wherein the shouldering assembly being provided on a side of one end of the main frame and not in the same axis as the connecting base, and the shouldering assembly being located in the left rear or right rear of the at least one connecting base; and a supporting assembly connected to the main frame, wherein the supporting assembly comprises a chest-supporting assembly, arm-supporting assembly, handheld assembly and supporting leg assembly, the shouldering assembly and the supporting assembly together provide supporting at multiple points for the main frame.

A shouldering type photographing support is provided, comprising a main frame for coupling components, on which at least one connecting base for fixing a lens or camera is provided; a shouldering assembly connected to the main frame, wherein the shouldering assembly being provided on a side of one end of the main frame and not in the same axis as the connecting base, and the shouldering assembly being located in the left rear or right rear of the at least one connecting base; and a supporting assembly connected to the main frame, wherein the supporting assembly comprises a chest-supporting assembly, arm-supporting assembly, handheld assembly and supporting leg assembly, the shouldering assembly and the supporting assembly together provide supporting at multiple points for the main frame.

A shaft structure includes a carrier, a first mandrel, and a second mandrel. The carrier has a groove, a receiving space communicated with the groove, and two protruding portions. The two protruding portions protrude from an inner wall of the carrier, and the two protruding portions are located between the receiving space and the groove. The first mandrel has a first gear, a first rotation shaft, and a first connection shaft connected to the first gear and the first rotation shaft. The first gear is located in the receiving space. The second mandrel has a second gear, a second rotation shaft, and a second connection shaft connected to the second gear and the second rotation shaft. The second gear is configured to move in the receiving space and the groove.

A shaft structure includes a carrier, a first mandrel, and a second mandrel. The carrier has a groove, a receiving space communicated with the groove, and two protruding portions. The two protruding portions protrude from an inner wall of the carrier, and the two protruding portions are located between the receiving space and the groove. The first mandrel has a first gear, a first rotation shaft, and a first connection shaft connected to the first gear and the first rotation shaft. The first gear is located in the receiving space. The second mandrel has a second gear, a second rotation shaft, and a second connection shaft connected to the second gear and the second rotation shaft. The second gear is configured to move in the receiving space and the groove.

An anti-rotational locking apparatus for locking an elongate rotatable element in a particular rotational position with respect to a housing include: a sleeve having an internal profile for slidably receiving therethrough a rotatable elongate element having a portion with an external profile configured to positively engage with the internal profile of the sleeve; a housing; and a locking pin. The sleeve has a flange with a first opening therein and the housing has a second opening therein, the locking pin being insertable in the openings. The flange is arranged for slidable alignment with the second opening in the housing such that when the openings are aligned, the locking pin may be inserted in the openings to lock the flange to the housing and thereby prevent rotation of the flange and of an elongate element extending therethrough and engaged therewith with respect to the housing.

An anti-rotational locking apparatus for locking an elongate rotatable element in a particular rotational position with respect to a housing include: a sleeve having an internal profile for slidably receiving therethrough a rotatable elongate element having a portion with an external profile configured to positively engage with the internal profile of the sleeve; a housing; and a locking pin. The sleeve has a flange with a first opening therein and the housing has a second opening therein, the locking pin being insertable in the openings. The flange is arranged for slidable alignment with the second opening in the housing such that when the openings are aligned, the locking pin may be inserted in the openings to lock the flange to the housing and thereby prevent rotation of the flange and of an elongate element extending therethrough and engaged therewith with respect to the housing.

Kinematic mounts disclosed in this application are made from three main components: a housing, a footing, and a tightening mechanism. The tightening mechanism includes three parts: a top portion, a bottom portion, and a locking interface mechanism. When the top portion, which includes a hollow tip with interior threading, is screwed down onto the bottom portion, which includes a threaded tip, the locking interface component is pressed against at least one interior surface of the housing that causes the housing to be pressed against the footing. This action holds the housing in place relative to the footing while simultaneously preventing unwanted movement of the housing during tightening.

A ball and socket joint assembly is disclosed that includes a body defining a cavity, a collet disposed in the cavity to receive a ball of a connector, and an actuator shaft coupled to the collet for rotating and translating the collet in the cavity. The cavity has a distal opening to accept the ball and an engagement feature extending into the cavity. The collet has an outer diameter larger than the opening in the body when the ball is disposed in the collet, and the collet has a corresponding engagement feature around at least a portion of the outer surface for receiving the engagement feature and converting rotation of the compression member into translation of the compression member along a proximal-distal axis of the body. The collet is compressed against the opening of the cavity when the collet is advanced distally against the opening.

A segmented adjustable arm device comprising a segment chain of a plurality of interconnected segments, wherein adjacent ends of each pair of adjacent segments of the segment chain form a ball and socket joint, one of the adjacent ends of each pair of the adjacent segments presenting a spherical or partially spherical plug and the other end of the adjacent ends presenting a socket configured to receive and hold the plug, allowing relative radial motion between the segments of that pair; and a locking mechanism, including a locking train that includes one or a plurality of rigid elements arranged in series along the segment chain, configured, when subjected to applied pressure, to pull the plurality of interconnected segments away from each other, and increase friction at the ball and socket joint to immobilize motion between adjacent segments.