Abstract:
A keyboard that may be utilized as a pointing device for disabled users is presented. The keyboard has one or more large buttons that allows the keyboard to be toggled between two different states. The first state corresponds to using the keyboard as a pointing device. A movement sensor is activated that may detect movement of the keyboard. The detected movement of the keyboard is then used by a computer system to control the movement of a cursor about a display screen. Additionally, one or more keys on the keyboard are grouped together to form compound keys that correspond to the pointing device buttons. The second state of the keyboard corresponds to that of standard keyboard operation in which a user may utilize the keyboard to type in letters, numbers, and commands in the typical fashion.
Abstract:
A method for securing passwords, personal identification numbers and identifying patterns utilizes a MasterCode camouflaged within a grid which contains all the characters, symbols or pictograms of which the MasterCode is a subset. For securing numeric sequences, the MasterCode is comprised of ten characters randomly associated to a corresponding digit (including zero). The characters thereby associated with each numeric password are expanded into an ordinary, natural language word, a SecureWord using non-associated letters. The MasterCode is masked by its unique placement in a MasterGrid known only to the user. For securing passwords comprised of alpha numeric symbolic characters, each unique character, the MasterCode, is assigned a sequential number which becomes a sequence of positions in the MasterGrid with each MasterCode character placed in the appropriate position and the remainder of the character set filled in. SecureNumbers are the positions in the MasterGrid of each character in a password. For securing patterns, a MasterGrid containing a set of pictograms is chosen from an offered array of such sets. The user then makes a pattern in the MasterGrid, his MasterCode. To gain access, the user must identify his MasterGrid from an array of similar grids and correctly recreate his pattern. Apparati for implementing the method are also described.
Abstract:
Apparatus for the vacuum, countergravity casting of metal in shell molds including a gas permeable shell mold secured to the mouth of a vacuum box by a plurality of keepers on the ends of rotatable shafts reciprocably slidable through the ceiling of the vacuum box, which keepers are adapted for insertion into and rotation within an anchoring cavity in the mold such that the keeper engages a portion of the mold overhanging the cavity to secure the mold to the box.