Techniques for controlling operations of a motor based on position errors are described. In an example, a user device sends an amount of electrical current to the motor to cause the motor to move. The user device also determines the motor is in position for a time interval despite the amount of electrical current. Based at least one the time interval and the amount of electrical current, the user device determines a position difference associated with a target position and a measured position of the motor during the time interval, and reduces the amount of electrical current based at least in part on the time interval.

A stand for vertically aligning borehole charges on non-level surfaces. The stand has a support base. A ball and socket assembly includes a socket portion connected to the support base and a ball portion disposed in the socket portion. The socket portion includes a grip interface to press against the ball portion. A body is connected to the ball portion. A clamp is attached to the socket portion at an interface of the ball and socket assembly between the socket portion and the ball portion. The body is configured to contain a shaped explosive charge for making a borehole. The ball and socket assembly is substantially hollow. The clamp adjusts compression of the ball and socket assembly.

A computer docking station devised to save desktop space while also eliminating the presence of permanent cables that can clutter the work surface is disclosed. The computer docking station utilizes a split design, with a lower dock subassembly positioned beneath the work surface for housing the permanent cables necessary for the computer workstation to operate and an upper dock subassembly comprising one or more data ports positioned on top of the work surface. A monitor arm mount can be attached to, or integrated into, the upper dock subassembly, thereby alleviating the need for a separate monitor arm mount without negatively impacting the docking station's footprint.

A display apparatus includes a display with at least a portion of the display being deformable and an apron with at least a portion of the apron being deformable. The apron is coupled to the display, a printed circuit board is electrically connected to the display, and a bracket having the printed circuit board mounted thereon is coupled to the apron to press the display disposed between the apron and the bracket, thereby providing a structure that is more stable to a phenomenon in which a display apparatus of a roll-up structure is peeled off.

Systems and methods disclosed herein disclose the use of docking stations with docking station receptacles of display apparatuses and docking stand assemblies. A docking station placed in a docking station receptacle of a display apparatus may connect to a host device and transport power and/or data as between the docking station, the host device, the display apparatus, and any external object(s). A docking station placed in a docking station receptacle of a docking stand assembly that includes a docking tray configured to interface with a portable electronic device (PED) may transport power and/or data as between the docking station, the PED, and any external objects via a power and data delivery pathway within the docking stand assembly.

The present invention discloses a multifunctional stand and a stand assembly. The multifunctional stand includes a supporting part, a connection part and a magnet, where the supporting part is connected to the connection part, and a joint of the supporting part and the connection part is recessed inwards to form a recess; and the magnet is disposed at an end of the connection part far from the recess. The stand assembly includes a plug and the multifunctional described above. The multifunctional stand of the present invention can be used for other purposes when not supporting a mobile phone or a tablet computer, and is small in size and convenient to carry. The stand assembly of the present invention can prevent a metal plug from scratching other items when a charger is carried.

In some examples, a release mechanism can include an extensible mechanism having a first distal end with a handle, a second distal end with an opening, and a slot. The release mechanism can include a hinge mechanism including a first face including a first tab that defines a first annulus and a second tab defines a second annulus, a second face including a third tab that defines a retention mechanism that is to be positioned in the slot, and a third face located opposite of the first face. The release mechanism can include an ejection mechanism including a first arm having a first projection to extend into the first annulus, a second arm having a second projection to extend into the second annulus, and a third arm to extend through the opening.

The present application relates to a shop chair with a seat cushion supported by a strong, light-weight base assembly with an elevated central hub that threadably receives a central column to adjust the height of the seat cushion. The base includes several vertically oriented thin plate legs that extend radially outward and downward from a central hub. The outer ends of the legs are joined by a stabilizing ring with a diameter larger than the seat cushion. Oversized caster wheels and the large footprint of the base provide a stable work platform. The seat cushion can be selectively lowered until the bottom of the central post is proximal to or contacts the ground. The chair and its base are particularly suited for work done closer to the ground.

A base for supporting an electronic device on a surface. The base includes a body shaped to receive at least a portion of the electronic device thereon; a cavity formed in the body on a bottom portion of the body such that the cavity is between the electronic device and the surface when the electronic device is mounted on the base; a channel formed on the bottom portion of the body such that the channel is located between a portion of the electronic device and the surface, the channel shaped to allow air to flow therethrough; one or more apertures formed through the body, the one or more apertures in fluid communication with the channel to allow air through the channel; and a plurality of feet arranged around the body, the feet having a lower surface that is shaped to contact the surface.

In some examples, an apparatus can include an arm, a cam connected to the arm, a first spring located around a first strut, where the first spring is oriented at a first angle relative to a base of the apparatus and the first strut is connected to the cam, a second spring located around a second strut, where the second spring is oriented at a second angle relative to the base of the apparatus and the second strut is connected to the cam, where the first spring and the second spring linearly compress in response to rotation of the arm from a vertical orientation to a horizontal orientation relative to the base of the apparatus.