Abstract: A removable weight in the form of a plug screw that is received in a receptacle of a golf club head. The weight includes adjustment weight pieces that are added to or subtracted from the screw body to yield the desired weight adjustment. The plug screw is removably connected to the golf club head and includes multiple recesses which receive various shaped weight pieces. The weight pieces can be formed from a variety of materials, each having a particular density to provide a multitude of weight choices.

Abstract: Provided is a converter system including: a plurality of converter modules connected to one power source in parallel; and a controller for storing mapping information of first parameters corresponding to processing power of the converter modules and second parameters corresponding to the number of converter modules that optimally process the processing power among the converter modules, configuring a value of the first parameter according to a measurement value of power input into the converter modules or power output from the converter modules, calculating a value of the second parameter by substituting the value of the first parameter into the mapping information, selecting the number of converter modules corresponding to the value of the second parameters as active converter modules from the converter modules and processing the processing power by using the active converter modules, and controlling output power of the active converter module to gradually increase or decrease in a transient state where the

Abstract: An iron type golf club head body has a back portion with a recess defined by a perimeter wall therein, and the recess having a back surface for attachment of an adjustable medallion. In a set of golf irons, the recess areas are progressively larger as the irons get shorter in length. In lieu of providing a different size medallion for each club head in a set of irons, the adjustable medallion is designed to use one medallion to accommodate an entire set of irons. The medallion consists of top and bottom pieces that can slide to an either small size or an expanded size. An area between the pieces creates a gap that will vary in width depending upon the size of the club head.

Abstract: The present invention relates to a technique for generating information for power grid optimization. The present invention allows information for power grid optimization to be generated by another agent device even when an agent device fails by providing a technique for generating the information for power grid optimization through one or more agent devices from among a plurality of agent devices which are connected horizontally, and distributing and applying the generated information with other agent devices.

Abstract: A removable weight in the form of a plug screw that is received in a receptacle of a golf club head. The weight includes adjustment weight pieces that are added to or subtracted from the screw body to yield the desired weight adjustment. The plug screw is removably connected to the golf club head and includes multiple recesses which receive various shaped weight pieces. The weight pieces can be formed from a variety of materials, each having a particular density to provide a multitude of weight choices.

Abstract: An iron type golf club head body has a back portion with a recess defined by a perimeter wall therein, and the recess having a back surface for attachment of an adjustable medallion. In a set of golf irons, the recess areas are progressively larger as the irons get shorter in length. In lieu of providing a different size medallion for each club head in a set of irons, the adjustable medallion is designed to use one medallion to accommodate an entire set of irons. The medallion consists of top and bottom pieces that can slide to an either small size or an expanded size. An area between the pieces creates a gap that will vary in width depending upon the size of the club head.