Abstract: A yo-yo has at least one sensor configured to measure a parameter related to movement of the yo-yo, a transmitter configured to transmit the measured parameter to the computing device. A server is configured to determine a trick performed with the yo-yo based on the measured parameter, and to communicate the determination to one or more computing devices of different players.

Abstract: A method and system for balancing user comfort with energy conservation in an energy management system having a plurality of electrical devices includes a dial system in communication with the energy management system. Movement of a movable member of the dial system between the first extreme and the second extreme commands the energy management system to change the operating settings of the plurality of electrical devices. A method for optimizing energy conservation in a building having an energy management system with a plurality of electrical devices includes inputting and defining fixed and variable building parameters, as well as building usage conditions predicting building usage. The variable building parameters are varied to minimizing energy consumption by the energy management system in accordance with the fixed building parameters and the predicted building usage.

Abstract: A golf club set wherein each club employs a partially hollow alignment ball section integrally formed therewith and having spaced apart heel and toe weights mounted therein to improve the club stroke. The preferred putter further includes second heel and toe weights at the end of the putter blade, providing a dual weighting system. The woods according to the preferred embodiment employ a ball section mounted in a recess in the top surface thereof while the irons and putter have the ball section centrally located behind the blade.

Abstract: A golf club set wherein each club employs an alignment ball section integrally formed therewith and having heel and toe weights mounted therein to improve the club stroke. The preferred putter further includes second heel and toe weights at the end of the putter blade, providing a dual weighting system. The woods according to the preferred embodiment employ a ball section mounted in a recess in the top surface thereof while the irons and putter have the ball section centrally located behind the blade.

Abstract: Golf putters with an alignment sight feature and an alignment ball section located at the club head end for achieving more accurate alignment and stroke of the putter. Toe and heel weighting within the ball section further contributes to greater putting accuracy. In the embodiments, a hemispherical ball section is mounted on a conforming blade and its face serves as the ball striking surface. In one embodiment, a bar mounted at the end of a shaft and an alignment stripe on the ball section form the alignment means, while in a second embodiment a curved metal bar is integrally formed with an overlying alignment bar to form an alignment sight.

Abstract: A sports racquet having two string faces each with a different tension to provide variable playing characteristics. The racquet is further equipped with two different grip surfaces to assist the player in detecting which racquet face is in use and with a grip which is inflatable to vary the grip "feed". A cassette loadable racquet face insert is also provided to enable a player to readily change one of the string faces to any of a number of different tension settings.