Abstract: The present invention is an exercise routine (ER) display system and method that can substitute as a trainer/therapist for the purpose of leading one or more users through a single exercise task or through an entire ER. The device displays a predetermined series of exercise tasks seriatim in a predetermined sequence, displaying each repetition of each task in the proper cadence according to a set of variable parameters that specify how each maneuver is to be displayed. Audible elements of the display count the repetitions or give cues for proper technique. Various other types of information are shown visually. The exercise maneuvers are displayed on a local display module that includes, in one embodiment, data processing components, data input/output components, display components, and sufficient long-term memory capacity to accommodate a large library of exercise maneuvers.

Abstract: An improved impeller and replaceable impeller wear parts for a rock crusher having a turntable driven by a vertical drive shaft. The impeller assembly consists of wear pins, wear plates, and block members and heel plates which are mounted on a removable tray which may be lifted from the turntable as a unit without removing the heavy turntable from the drive shaft. Interchangeable wear pins and wear plates are quickly and easily relocated within the impeller assembly or replaced. The wear pins are characterized by double lugs in the top and bottom of projections in a generally cylindrical metal pin which interlock with cutouts in the wear plates.

Abstract: A breaker block, radial and rotational breaker block adjustment assembly and vertical adjustment means for rock crushers having an impeller mounted on a vertical axis. The breaker blocks are mounted in cell members forming a concentric circle about the vertical axis. The breaker blocks are detachably connected to adjustment assemblies which move the blocks toward the impeller as they wear and permit rotation if the impact face wears unevenly. An annular ring in one form of the invention supports the breaker blocks and cell members and is movable vertically in relation to the impeller.

Abstract: A centrifugal rock crusher having a cylindrical housing with a rotatively driven impeller disposed concentrically therein with a plurality of impeller vanes disposed uniformly around the impeller defining channels through which rock to be crushed is centrifugally thrown against a plurality of uniformly concentrically spaced anvils secured within the housing adjacent the impeller. The impeller is generally formed of a pair of vertically spaced upper and lower disc-shaped members which support the impeller vanes between them and together define the channels through which the rock to be crushed is thrown. Upper and lower wear plates are respectively secured to the upper and lower disc-shaped members and are angled downwardly to direct the trajectory of rocks thrown from the impeller generally horizontally against the anvils. The anvils are radially disposed in two concentric rows around the inside of the cylindrical housing with adjacent anvils being in different rows so as to present a staggered anvil pattern.