Abstract: Embodiments of putter-type golf club head comprising a striking surface capable of achieving consistent ball speeds across the striking surface to account for various ball impact locations are described herein. The striking surface has at least two materials that differ in concentration away from the geometric center of the striking surface to provide this consistency. Consistent (or uniform) ball speed is achieved throughout the striking surface as the portion of the golf ball that contacts the striking surface interacts with at least two materials having a differing material characteristic.

Abstract: A portable work platform is provided having a height adjustable platform work surface and leg assemblies which may be locked into an open, use-position and unlocked to fold into a collapsed storage position.

Abstract: An apparatus and method for inserting rigid cores into flexible tubing comprises a frame having a tubing retainer and a motor device, having a chuck and being mounted on the frame in spaced relation to said retainer for engaging and translating the core longitudinally and coaxially with respect to the tubing. A tapered tip is connected with the free end of the core, and a source of pressurized air is attached to the tubing in communication with the central, axial aperture thereof. An inclined leading edge of the tip is shaped to mate with the tubing aperture, and is translated into sealing abutment with the terminal edge of the tubing free end. Pressurized air is introduced into the tubing and radially expands the unconstricted side wall thereof to an enlarged diameter for inserting the core therein.