Abstract: A solid-state electronic dehumidifier (SSED) to improve the performance, productivity and longevity of small-scale ozone-generating devices. By removing moisture upstream of the ozone generator, the SSED stabilizes the ozone generator's rated ozone output. Reducing moisture content in the process gas (air), increases unit performance, and the lifetime of the ozone-generating cell is increased by reducing nitric acid generation. The system includes an SSED upstream from an ozone generator. The SSED has an outer housing divided into two chambers, a cold side and a hot side, by a dividing panel. The SSED has a cold heat sink located in the cold side and a hot heat sink located in the hot side, with a heat exchange unit secured in the dividing panel in contact with both cold and hot heat sinks. Air flow through the hot and cold sides dehumidifies the air in the cold side and is directed to the ozone generator.

Abstract: A clamping assembly (130) for clamping a guidebar (120) of a chainsaw (100) to a chainsaw body (110) via a clutch cover (150) including a receiving opening (210) having a series of teeth (212) defined at an internal periphery thereof is provided. The clamping assembly (130) includes an inner knob base (220) rotatably received within the receiving opening (210), a rack element (240) disposed at a portion of the inner knob base (220) to be engageable with the teeth (212), and a knob (140) configured to contact at least a portion of the inner knob base (220). The knob (140) includes a driver reception slot (252) formed therein to engage at least one driver (224) extending from the inner knob base (220). Responsive to rotation of the knob (140), the driver (224) engages the knob (140) to rotate the inner knob base (220) such that the rack element (240) sequentially engages the teeth (212) while tightening the knob (140) to the chainsaw body (110).

Abstract: To facilitate the demounting of a chain (3) from a chainsaw, the saw has a lever arm preferably in the form of hinged cover (11) arranged to displace the sprocket (15) towards the guide bar (2) the other upon opening of the cover (11). Upon closing the cover (11), the sprocket (15) is displaced in the opposite direction to pre-tension the chain (3). The sprocket (15, 115) may be driven over a gear transmission (27, 127), which when the chain (3, 103) is running at ordinary cutting speed uses resulting forces to automatically tension the chain (3, 103) by displacing the sprocket (15, 115) away from the guide bar (2, 102). A ratchet mechanism (34) may be provided to maintain the chain tension upon reduction of the chain speed by preventing the sprocket (15) from moving toward the guide bar (2). Alternatively, a mechanism for automatically tensioning the chain (3, 238) of a chainsaw includes a driving inner sprocket (76, 201), and an outer ring member (77, 204) surrounding the inner sprocket (76, 201).

Abstract: The invention relates to a rapid tensioning apparatus as well as to a chain unit and a sword suitable for it, by means of which the placing of saw chain and sword on the main body of the chain saw can be readily carried out and a tensioning of the saw chain is made possible without problems. In the rapid tensioning apparatus a wedge is mounted on the sword of the chain saw whereas a movable tensioning lever arrangement comprising a counterwedge is positioned on the chassis in the area of the drive shaft. In a special manner the course of the movement of the elements of the tensioning lever arrangement in the transition from the open position to the closed position is designed in such a manner that the counterwedge acts on the wedge mounted on the sword and secures the sword on the chassis by contact pressure. At the same time the sword is pushed longitudinally in the direction away from the drive pinion here by the pushing pressure so that the saw chain is tensioned.

Abstract: A data storage system includes a set of disks where each disk is operable in a plurality of discrete angular velocity levels. A disk controller controls the angular velocity of each active disk. The controller replicates a first portion of data on a plurality of the disks stores a second class of data in the set of disks without replication. The disk controller routes data requests to one of the active disks based, at least in part, on the current loading of the active disks to maintain balanced loading on the active disks. The disk controller alters the angular velocity of at least one of the active disks upon detecting that the latency of one or more of the data requests differs from a specified threshold. In this manner, the disk controller maintains the angular velocity of the active disks at approximately the same minimum angular velocity needed to attain acceptable performance. The disk controller may replicate the first portion of data on each of the disks in the set of disks.

Abstract: A data storage system in which each of a set of disks has a first portion for either popular data or error correction information (parity or Reed-Solomon code symbols) associated with the popular data, and a second portion used for other data. A disk controller connected to the set of disks maintains a first popular data block in the first portion of a first of the set of disks and a second popular data block in the first portion of a second of the set of disks. The system maintains at least two of the disks in an active state. The active disks are selected to insure that any data in the popular data blocks can be determined from data stored in the active disks. An additional disk is maintained in an active state if write access is permitted or if there is an additional popular data block.