Abstract: A process is provided wherein a metal powder of iron or low alloy steel is mixed with a lubricant having a characteristic of becoming liquid under pressure and of evaporating under a sintering temperature and at least one liquid phase former to form a mixture. The mixture is compressed at a pressure sufficient to liquefy and uniformly distribute the lubricant within the compressed mixture with the lubricant effecting a uniform distribution of the liquid phase former on the particles of the metal powder. Upon sintering, the lubricant is evaporated and driven off and a liquid phase sintering of the liquid phase former with the particles of the metal powder occurs to obtain a product having a density of 99+% of theoretical density.

Abstract: The process for extruding tantalum or niobium includes sealing a cold isostatically pressed charge of tantalum or niobium powder in a first metal cylinder and then sealing the first cylinder in a second metal cylinder with a metal powder of spherical shape in a gap between the cylinders. Thereafter, the second cylinder is cold isostatically pressed to prevent the metal powder in the gap from segregating. This is followed by heating and extrusion of the second container to form, e.g. an extruded bar. The ends of the bar and the skin on the bar can be removed to obtain a rod of tantalum (or niobium) with a yield of from 95% to 96% of the original powder.

Abstract: The process of forming an extruded product of tantalum or niobium requires a cold isostatic pressing of a charge of the powder to a density sufficient to form a green compact which is then placed in a capsule. The capsule is then sealed and heated to a temperature and for a time sufficient to anneal the green compact. Thereafter, the capsule and encapsulated compact are subjected to a cold isostatic pressing to achieve a density of from 70% to 85%. This is followed by subsequent heating and extrusion of the heated capsule and encapsulated compact to form the extruded product. The outer layer on the capsule which has been formed by the capsule material can be removed, as by pickling, in the case of the capsule being a carbon steel.

Abstract: A manipulable puzzle and method includes a shallow box-like housing with a see-through top established by base-conforming side walls and-apertured front and back walls for containing slider bars incorporating a plurality of alternating teeth and pockets which are translated relative to the housing for selective manipulation of color coded balls between the pockets of adjacent, aligned slider bars to establish new distribution patterns of the color coded balls.

Abstract: A sport simulation game having a two dimensional playing field with a number of defensive players attached thereto and moveable in at least a widthwise direction. The offensive player is moveable in both a lengthwise and widthwise direction and is controlled by a hand control. The offensive player may carry a ball and the object is for the offensive player to move lengthwise over the playing field while avoiding engagement with any of the defensive players. One or two players may play the game. With two players, one player would use a hand control to control movement of the defensive player. With one player, the defensive players would be set to automatically move either independently of or dependent upon the lengthwise movement of the offensive player.

Abstract: A slot game utilizing coins provides an enclosed partially transparent case having at an upper end thereof input slots for placing coins into each of a plurality of vertical columns. At the lower end is positioned a coin retrieval slot the allows removal of the coins upon pulling of a handle. Between the uppermost and lowermost points on the case are disposed a plurality of horizontal rows of blocks and slots. The slots are sized to receive coins of a predetermined size. The blocks and slots of each row are individually movable horizontally to allow movement of the coins between columns, thus, facilitating passage of coins in the slots from upper to lower rows. Each row of blocks and slots may be operated for horizontal movement individually by means of slides projecting from the case along one side of its face.

Abstract: A device that may be embodied either as an interlocking puzzle game or as a security device and formed of a body and associated locking member adapted to be received by the body. A plurality of combination blocks are supported in the body along with a plurality of keys. The blocks have slots for receiving the keys with each key having a locked position and an unlocked position. The key in the locked position engages the locking member to prevent disengagement thereof from the body. The key in the unlocked position is disposed in the block and out of engagement with a locking member to enable disengagement thereof from the body. The combination blocks may be rotatable in the body.