A kit for attaching one or more interchangeable accessories, for example, sound makers, fashion accessories, utility accessories, instrument accessories, etc., to an instrument, for example, a drum stick, a drum head, a post of a bass drum pedal or a hihat, a cajn, a microphone, a guitar, a stand, etc., to enhance sound, functionality, and visual elements of the instrument is provided. The kit includes one or more interchangeable accessories and at least one attachment system. The attachment system includes an attachment member and a connector element. The attachment member, for example, a clamp assembly with an accessory housing and a release assembly, or a generally cylindrical attachment member, or a cap member is removably attachable to a predetermined location of the instrument. The connector element is a female connector or a male connector for engageably connecting the attachment member to an opposing connector of one of the interchangeable accessories.

A method for predicting the explosion pressure of a medium- and large-size cell module, according to the present invention, comprises the steps of: (S100) deriving a profile (SOC-temperature profile) of the generation temperature according to a state of charge (SOC) of a medium- and large-size cell module to be predicted; (S200) mounting a small cell inside an explosion pressure measurement device; (S300) overcharging the small cell until an explosion occurs while heating the small cell in the same manner as the SOC-temperature profile derived in step (S100); (S400) measuring the pressure during the explosion of the small cell; and (S500) converting the pressure during the explosion of the measured small cell into pressure of a medium- and large-size cell module.

A method for predicting the explosion pressure of a medium- and large-size cell module, according to the present invention, comprises the steps of: (S100) deriving a profile (SOC-temperature profile) of the generation temperature according to a state of charge (SOC) of a medium- and large-size cell module to be predicted; (S200) mounting a small cell inside an explosion pressure measurement device; (S300) overcharging the small cell until an explosion occurs while heating the small cell in the same manner as the SOC-temperature profile derived in step (S100); (S400) measuring the pressure during the explosion of the small cell; and (S500) converting the pressure during the explosion of the measured small cell into pressure of a medium- and large-size cell module.

An apparatus for supporting a musical instrument comprises a stand comprising a plurality of legs comprising a forward leg and two rear legs, and a center block having a plurality of apertures for receiving the legs. Each of the legs comprises a top end and a bottom end. The legs are pivotally attached to the center block and held within the apertures, and the apertures are shaped such that the legs are moveable between a folded configuration and a splayed arrangement wherein the bottom ends of the rear legs are laterally displaced and the bottom end of the forward leg is forwardly displaced.

Provided is a cushion capable of accurately measuring and displaying a weight of a user sitting on the cushion, and convenient to store, use, and carry. The cushion includes a flexible sheet constituting a bottom part; a flexible seat having an integrated rectangular space part formed on the flexible sheet; a pressure transfer medium injected into the space part of the flexible seat; a pressure transfer medium injected into the space part of the flexible seat; and a scale for sensing pressure applied to the pressure transfer medium by an external pressure applied to the flexible seat and displaying the pressure as a weight, in which the scale includes a load cell, a base member, a control unit, a first display unit and a second display unit.

Provided are an apparatus for estimating vehicle mass using tire air pressure and a method thereof, the apparatus for estimating the vehicle mass including: an air pressure determining unit; a speed measuring unit; a data storing unit; an error calculating unit; and a mass calculating unit.

The monitoring device provides value to parents by assisting with monitoring their infants via a convenient sensor package, straightforward interface, and informative data. With movement, orientation, and temperature data, some strong indicators of general well-being can be monitored and conclusions extracted without the parent needing to be constantly involved. The low-power transceiver technology also means that the device can integrate with smart devices for even more convenience. Such a smart device can in turn communicate with modem large-scale data storage and analysis centers for data logging and analytics, which allows useful analytics to be passed back to the user. The advanced sensing, displaying, and analyzing of data makes the invention stands out in the field of infant monitoring devices.

The monitoring device provides value to parents by assisting with monitoring their infants via a convenient sensor package, straightforward interface, and informative data. With movement, orientation, and temperature data, some strong indicators of general well-being can be monitored and conclusions extracted without the parent needing to be constantly involved. The low-power transceiver technology also means that the device can integrate with smart devices for even more convenience. Such a smart device can in turn communicate with modem large-scale data storage and analysis centers for data logging and analytics, which allows useful analytics to be passed back to the user. The advanced sensing, displaying, and analyzing of data makes the invention stands out in the field of infant monitoring devices.

A hitch ball assembly for a trailer hitch. The hitch ball assembly includes a clam-shaped body having a plurality of hinged segments operable between an open position and a closed position. Each of the plurality of hinged segments includes a concave inner surface that collectively form a ball shaped-cavity configured to enclose a smaller-diameter hitch ball. Each of the hinged segments further includes an outer surface that collectively form a larger-diameter hitch ball configured to engage a trailer tongue when the hinged segments are operated to the closed position.

A method for determining the wheel load or axle load of an air-sprung vehicle by measuring the internal pressure of the air spring, wherein the wheel load or axle load is determined using a pressure curve which represents the relationship between a bearing force acting on the air spring and the internal pressure of the air spring, characterized in that starting from a wheel load or axle load determined by pressure measurement, using an original pressure curve of an air spring which has been newly brought into operation, further pressure measurements are carried out using pressure curves which, in comparison with the original pressure curve, show a change reflecting the aging of the air spring.