Abstract: A golf club head that is capable of preserving the metallic acoustic signature of an entirely metallic golf club head all while utilizing a lightweight composite material is disclosed herein. More specifically, the golf club head in accordance with the present invention creates a frontal acoustic chamber in conjunction with a rear weight saving chamber via a panel member barrier is disclosed. The panel member may even be combined with an optimized thickness relationship at the transition region between the striking face portion and the panel member to further optimize the performance of the golf club head.

Abstract: An apparatus is used in cementing and perforating casing in a borehole. A cement head disposed on the casing has first and second containers. A first plug positioned in the first container deploys from the cement head in the casing in advance of cement slurry. An assembly positioned in the second container deploys from the cement head in the casing after the cement slurry. The first plug lands on a float collar on the casing, and a breachable passage in the first plug opens and allows the cement slurry to pass into the borehole annulus. The assembly has a wiper and has one or more charges. The wiper wipes the casing as the assembly is displaced down the casing with displacing fluid. Eventually, the assembly lands at the first plug, and hydraulic pressure applied in the casing activates the one or more charges to perforate the casing.

Abstract: A safety window comprising: a window frame, with a right inner surface, a left inner surface, a top, and a bottom; a lower sash in vertical slideable communication with window frame, the lower sash with a top and a bottom; an upper sash in vertical slideable or fixed communication with the window frame, the upper sash with a top and a bottom; a lock apparatus located on the top of the lower sash and the bottom of the upper sash and configured to reversibly lock the lower sash with respect to the upper sash, when locked the upper sash is located at the top of the frame, and the lower sash is located at the bottom of the frame; a first plurality of holes located on the right inner surface of the window frame; a second plurality of holes located on the left inner surface of the window frame; a first extendible pin located in the top of the bottom sash, and configured to removeably engage at least one of the first plurality of holes; a second extendible pin located in the top of the bottom sash, and configured to