摘要:
A flow directing device is provided for a fluid filled seal chamber for a centrifugal fluid pump, wherein the pump includes a seal chamber housing, a rotary shaft extending through the housing, an impeller mounted on one end of the shaft, and a rotary seal mounted about the shaft. The rotary shaft and housing define the seal chamber opening toward the impeller. A plurality of angled vanes radially depend about a circumferential portion of the seal chamber to direct the flow of fluid in the seal chamber along the rotary shaft to remove suspended solids from the rotary seal when the vanes extend in one direction, and to remove vapor bubbles from adjacent the rotary seal when the vanes extend in another direction and are coupled with a bulkhead flange.
摘要:
The invention provides a hitch intended especially as a bumper hitch for automobiles and employing a pair of adjustable-length chains to connect the hitch to the bumper. The two chains are connected to the arms of a centrally-pivoted, two-armed lever and the lever pivot is moved backwards by a cam to tighten them simultaneously, with the lever pivoting to take up inequalities. The cam pivots about the lever pivot and engages a reaction member to produce the tightening movement, the cam having a "dead" position on tightening so that it will not move voluntarily out of that position. The hitches can be used in pairs on a transverse trailer-ball carrying bar which extends through the hitch bodies and also constitutes the reaction member for each hitch cam. The hitches are retained on the bar and slide freely thereon until the cam is moved to the tightened position, when it also locks the respective hitch in transverse position on the bar by its reaction engagement with the bar. The hitch body also has lugs to receive an automobile towing A-frame.
摘要:
A processing device may generate a data encryption key configured to encrypt unique data within a clone of an encrypted data set and associated with a set of transaction identifiers of a transaction based file system. The processing device may further wrap the data encryption key with a wrapping key, create a cloned encrypted data set with the data encryption key, and store the wrapped data encryption key with the cloned encrypted data set indexed by at least one of the set of transaction identifiers.
摘要:
A method of evaluating thermal stability of a fuel and an apparatus used therein. The method includes heating the fuel to a given temperature, directing light through the heated fuel a first time wherein the light is of an intensity and of a wavelength to induce fluorescence and obtaining a first fluorescence data, directing the light through the fuel at least a second time that is later in time and obtaining a second fluorescence data, and measuring any changes to fluorescence from the heated fuel over time.
摘要:
The present invention relates to flow control devices (4) for use with cartridge filter cleaning systems. The flow control device (4) includes a cylindrical portion (8) which extends away from a conical portion (6). When the device (4) is used with a nozzle (9) attached to a blow tube (13) the device (4) will uniformly clean a dirty cartridge filter (5). The advantage of the invention is that the device (4) can be used in the current range of air flow rates and nozzle sizes that are used in the cartridge cleaning industry. Whereas the prior art systems (7) show deficient performance when used across the full range of air flow rates currently applicable in industry.
摘要:
The invention relates to a centrifugal pump particularly adapted for pumping fibrous suspensions from within a reservoir, wherein the pump includes a rotor arranged wholly within the reservoir for cooperation with the bottom wall thereof to effect fluidization of suspension and discharge of the fluidized suspension from the reservoir for passage through the pump, wherein an entrained gas, such as air, is withdrawn from the pump by means of a unique pump-out mechanism disposed rearwardly of a shroud of an impeller of the pump and including pump-out vanes and a repeller shroud cooperating with the impeller shroud and pump-out vanes to define radially opening flow paths, wherein flow openings extend across the impeller shroud for flow communication with the radially opening flow paths. The mechanism may also include repeller vanes carried by the repeller shroud to extend rearwardly of pump-out vanes.
摘要:
The invention relates to a centrifugal pump of the type adapted for use in pumping multiple phase liquids, i.e. liquids having entrained gas and liquids having both entrained gas and solids. The pump includes means for effecting an initial separation of gas from the liquid, as by centrifugal action, and a final separation by means of a unique pump-out mechanism disposed rearwardly of a shroud of an impeller of the pump and including pump-out vanes and a repeller shroud cooperating with the impeller shroud and pump-out vanes to define radially opening flow paths, wherein flow openings extend across the impeller shroud for flow communication with the radially opening flow paths. The mechanism may also include repeller vanes carried by the repeller shroud to extend rearwardly of pump-out vanes.
摘要:
A cat litter box having a side wall defining an interior and a bottom surface within the interior formed from a main door and multiple secondary doors which form on opening. Each door includes a slat connected below the slatted edge on an underside thereof traveling most of a length of the slatted edge, and the doors are hingedly attached to the side wall of the housing. Provided is a means for manipulating the main door upwards and downwards such that the main free edge can be pushed against the slat of an adjacent one of the secondary doors to provide a downward force against each the secondary door to reveal the opening. In this manner, any contained soiled litter can periodically be dumped and the contents removed, resulting in an easy-to-use, sanitary cat litter box system.
摘要:
A method for separating and isolating a target chromosome from a cellular sample by using a DNA probe with a fluorescein tag. Magnetic beads bound to anti-fluorescein isothiocyanate antibody were reacted with the fluorescently labeled pool of chromosomes and then separated in suspension by exposure to a magnetic field.
摘要:
A videoconferencing station is disclosed which includes apparatus for establishing a wireless Personal Area Network (PAN) in the immediate vicinity of the videoconferencing station. In one preferred embodiment, the PAN is a Bluetooth piconet. A Bluetooth-enabled cellular telephone may then be used to make an audio connection via the telephone network to a remote user not in a conference room equipped with a videoconferencing station. The remote user may thereby participate in at least the audio portion of the videoconference. Video portions of the conference may similarly be transmitted if video-enabled phones are used.