A watch can include a watch band having a first strap segment, a second strap segment, a nest portion secured between the first strap segment and the second strap segment, and an opening extending through the nest portion. The watch can further include a housing releasably mountable to the nest portion, and a sensor disposed within the housing and configured to align with the opening when the housing is mounted to the nest portion.

A system for carrying or using a device includes the device and at least one attachment apparatus. The device may include at least one attachment element. The attachment apparatus may include a length of material and at least one attachment point arranged on an end of the length of material. The at least one attachment point may include at least one magnetic feature configured to attach and detach the device and the length of material. The material can include but is not limited to cloth, metallic (magnetic and non-magnetic), fibrous material, and so forth.

A system for locating a first component with respect to a second component. The system includes a bracket and a coupling member. The bracket defines a base wall and a side wall. The side wall extends from the base wall and defines an end remote to the base wall. The side wall defines a thickness and a length spanning from the base wall to the end. The coupling member is fastened to the base wall, and is configured to couple the base wall with the first component. The side wall is configured to be brought into contact with the second component to space and locate the second component with respect to the first component by at least one of the thickness defined by the side wall or at least a portion of the length defined by the side wall.

A device for mounting a leap block capable of automatically adjusting the mounting direction of the leap block comprises a block stand fixedly mounted to one end of a blocking device frame and configured to support a leap block so that the leap block is rotatable in a horizontal direction; the leap block in which a support rotatably supported by the block stand is formed in the center, and a first magnetic body is mounted in one direction; and a leap block mounting unit to which a second magnetic body that couples with the first magnetic body by magnetic force is mounted in one direction, and which rotates in the horizontal direction and couples with the leap block in a fixed direction.

A display system comprises a display board comprising opposed front and back surfaces; at least one elongated channel formed in the front surface; wherein each elongated channel is recessed with respect to the front surface of the display board. The elongated channel comprises a plurality of substantially parallel elongated channels vertically spaced from one another; a metal strip disposed within each elongated channel. The metal strip has a front surface recessed with respect to the front surface of the display board. The metal strip is configured to display at least one display item having a magnetic element. The magnetic element shares at least one dimension with the width of a respective metal strip. The cover layer covers the front surface of the display board and the metal strip disposed in each channel. The cover layer follows contours of the front surface of the metal strip disposed in each channel.

A furniture system includes a piece of furniture with a groove. A magnetically attractive element is placed about the groove. A furniture accessory has a tongue that can fit into the groove. Magnets positioned about the tongue engage with the magnetically attractive element to hold the accessory in place. The magnetic force is sufficient to secure the accessory in its location within the groove while allowing for repositioning or removal of the accessory with relative ease.

Disclosed are a rotary knob lock, a maintenance tool and an LED display. The rotary knob lock includes a lock body, the lock body includes a head part and a limit part, a diameter of the head part is larger than a diameter of the limit part, the head part is provided with a first magnet, the limit part is provided with a limit block; the maintenance tool includes a body, the body is provided with a second magnet inside, the second magnet and the first magnet of the rotary knob lock are magnetically attracted to each other; the LED display includes an LED display module and a cabinet, the LED display module is provided with a rotary knob lock, the cabinet is provided with an avoidance hole, when the LED display module is mounted on the cabinet, the first magnet and limit block are located on both sides.

A hat holder for effectively holding a hat in a manner and position simulating the position that the hat would take when placed on a person's head, effectively displaying the front portion of the hat and maintaining the shape of the hat without leaving any marks on the hat. The device includes a magnet that creates a magnetic bond with the ferrous part of the hat, a general hat form being additional support for maintaining the general shape of a hat, an arm that connects from the support structure to the base and a base which allows the hat to be supported from various support structures including but not limited to a vertical wall surface or the like with the orientation enabling the hat to be positioned generally in the attitude that the hat would assume when placed on a person's head.

A system for carrying or using a device includes the device and at least one attachment apparatus. The device may include at least one attachment element. The attachment apparatus may include a length of material and at least one attachment point arranged on an end of the length of material. The at least one attachment point may include at least one magnetic feature configured to attach and detach the device and the length of material. The material can include but is not limited to cloth, metallic (magnetic and non-magnetic), fibrous material, and so forth.

A surgical robotic system that includes a surgical table that is configured to hold a patient and a magnetic latch. The magnetic latch has a ferromagnetic plate, a permanent magnet that produces a first magnetic field and that attracts the ferromagnetic plate to thereby couple a robotic arm to the surgical table, and a cancelling coil, which when energized, produces a second magnetic field that opposes the first magnetic field to thereby uncouple the robotic arm from the surgical table.