Abstract: A cutting board kit having a cutting board holder capable of securely receiving two or more cutting boards. The cutting boards may be designated for use with specific classes of food products.

Abstract: A cutting board kit having a cutting board holder capable of securely receiving two or more cutting boards. The cutting boards may be designated for use with specific classes of food products.

Abstract: The present invention is a soil retainer block formed of lightweight, flexible, and durable material used to prevent soil and water from seeping under a foundation supported above the underlying soil by piers. In use, the present invention is placed about a foundation and then covered with top soil to form a barrier which prevents soil and water invasion. The present invention is constructed of the lightweight, flexible, and durable material in order to provide superior moisture resistance, impact resistance, and safe and easy installation.

Abstract: A Kalman filter, for a dynamic system having a number N of different states and another number M of observational components, uses a fixed rectangular systolic array of N.times.(N+1) parallel data processing elements for a regular filter, and uses an array of (N+2).times.(N+3) processing elements for a fault-tolerant filter; the processing elements in either configuration are connected in a four-nearest-neighbors network. Each processor is capable of carrying out a commanded one of a plurality of different vector-data operations sets during each of eight passes through the array. The systolic array operates on the matrices in a pipeline manner, so that each pass through the processor array feeds the result back into the array to begin the next computation.

Abstract: A chamber door lock for a roller lock system wherein a vertically reciprocable locking bar is provided with a series of rollers and a vertically reciprocable chamber door is provided with spaced block weldments. The chamber door lock includes a cam beam pivotably mounted on the chamber and coupled to the locking bar. Upward movement of the locking bar to its uppermost position clears the rollers from the door block weldments and swings the cam beam away from the top of the door to a clearance position whereby the chamber door can be raised and swung to an open position. Downward movement of the locking bar to its lowermost position moves the rollers into engagement with striker plates on the door block weldments thereby urging the door against the chamber face so as to compress the door gasket and seal the chamber face.

Abstract: A tire and wheel rim assembly wherein the wheel rim includes adjacent to at least one bead seat a circumferentially extending groove and the tire bead has a radially and axially projecting extended toe portion which is axially and radially located within said groove. The toe is flexible in a direction substantially perpendicular to its length and substantially rigid in the direction of its length and provides an effective bead lock to retain the tire bead in position on the rim.