摘要:
The present invention is a planarizing machine for use in chemical-mechanical planarization of semiconductor wafers that has a moveable platen, a polishing pad, a wafer carrier, and a wafer separator. The polishing pad is positioned on the platen, and it has a planarizing surface with an operational zone upon which the wafer may be planarized. The wafer carrier holds a wafer and is positionable opposite the polishing pad to engage the wafer with the operational zone of the polishing pad. The wafer separator engages either the polishing pad, the wafer, or the wafer carrier to urge a portion of the wafer away from the pad.
摘要:
The present invention is a planarizing machine for use in chemical-mechanical planarization of semiconductor wafers that has a moveable platen, a polishing pad, a wafer carrier, and a wafer separator. The polishing pad is positioned on the platen, and it has a planarizing surface with an operational zone upon which the wafer may be planarized. The wafer carrier holds a wafer and is positionable opposite the polishing pad to engage the wafer with the operational zone of the polishing pad. The wafer separator engages either the polishing pad, the wafer, or the wafer carrier to urge a portion of the wafer away from the pad.
摘要:
A high inertia golf putter head is generally wedge-shaped, with the leading face being less wide than the trailing face. Cavities and weights are provided to optimize the moment of inertia.
摘要:
A truing lathe has its components mounted on a base. A pair of stands for holding the workpiece are mounted on the base. The stands have a pair of notches where the workpiece rests and is rotatable therein. An electric motor with a pulley head is mounted on one of the stands and below the notches so that the motor drive shaft aligns with the axis of rotation of the workpiece. One loop of a stretchable endless belt is slipped over the midsection of the workpiece while the other loop is stretched to fit around the drive pulley. The cutting bit is mounted on separate longitudinally and transversely moveable blocks so that the bit can be adjusted radially and longitudinally relative to the axis of rotation of the workpiece to machine the workpiece. The mounting stand and the way the workpiece is rotated results in minimal precession of the workpiece on the lathe to allow for a closer and truer machining of the workpiece. The lathe is compactly built and can be powered by batteries under field conditions to repair electric motors used in radio controlled model cars. The type of electric motor used to run the lathe is the same type of electric motor used to power radio controlled model cars. The lathe also can be used in the hobbyist's shop.
摘要:
A workspace partition system, for example, for an office building includes a relocatable cable raceway that can be positioned selectively at the belt line or at the baseline of a wall panel of the system depending on where power and data communications are required. Each wall panel of the system includes a structural frame. A raceway element can be selectively coupled to the frame in co-operation with any transverse member of the frame. Front and rear cover plates can be attached to mechanically protect cabling within the raceway. This design allows the panel to be reconfigured on site to change the location of the raceway.
摘要:
A high inertia golf putter head is generally wedge-shaped, with the leading face being less wide than the trailing face. Cavities and weights are provided to optimize the moment of inertia.