摘要:
A method of and means for introducing a heated liquid into a cold liquid the purpose of improving the pumping rate of the cold viscous liquid is provided. The heated liquid is directed upward into the suction inlet of the cold liquid pump through an orifice or a multiplicity of small orifices which are disposed a selected distance below the suction inlet.
摘要:
A heating system uses a dynamic thermal stabilizer for receiving, mixing, holding and outputting a circulating heat exchange liquid in a fashion similar to the use of a flywheel in the mechanical arts. Liquid is returned to the dynamic thermal stabilizer from both an input heat exchange unit and an output heat exchange unit. A two pump system affords a simple tee fitting arrangement that provides room air heating by directly using hot liquid either from the dynamic thermal stabilizer or directly (and at higher temperature) from the input heat exchange unit itself to automatically achieve an additional boost of room heat using higher temperature liquid. The system can also provide initial short draws of domestic hot water from the dynamic thermal stabilizer alone or long draws of hot water by using the input heat exchange unit as a further source of heat input. The system includes a through-the-wall mounting system that simultaneously provides a source of combustion air and vents exhaust products, a spacer to maintain combustion air and exhaust pipes in spaced-apart relation, and a vent device for maintaining a cool, outer-vent surface. The system is combined with an air conditioning or heat pump system to provide a triple integrated appliance that provides room air heating and cooling and a source of domestic hot water.
摘要:
An analytical cartridge adapted for use in analyzing fluids which contain liquid and solid components. The cartridge includes a plumbing system composed of various wells or chambers which are interconnected by passageways. After introduction into the cartridge, liquid samples are separated and transported to a test well utilizing a sequential application of centrifugal force followed by pressurization of the system. The cartridge may be used to measure the concentration of a wide variety of chemical constituents in bodily fluids and is useful in measuring other properties of these fluids which contain liquid and solid components.
摘要:
A wobble plate compressor, which is adapted to vary the angularity of the wobble plate in response to the difference between the resultant reaction force exerted by the pistons on their compression strokes and the pressure in the crankcase, includes elastic means permanently biasing the wobble plate in the angularity-decreasing direction, and control valve means responsive to a signal indicative of at least one predetermined parameter to selectively connect the crankcase with a suction pressure space and a discharge pressure space for a rapid change in the pressure in the crankcase to thereby achieve control of the angularity of the wobble plate with high responsiveness.
摘要:
An electro-analytical cartridge adapted for use in analyzing fluids. The cartridge includes an electrochemical device that measures ionic activity using ion-specific electrodes. The cartridge further includes a plumbing system composed of the electrochemical device and various wells or chambers which are interconnected by passageways. After introduction into the cartridge, liquid samples are measured out and transported to the electrochemical device utilizing a sequential application of centrifugal force followed by pressurization of the system. Reference fluid is transported from a reference fluid well or reservoir to the electrochemical device for use in measuring ionic activity. The cartridge may be used to measure the ionic activity of a wide variety of ions in fluids including bodily fluids.
摘要:
An instrument for obtaining tissue samples from a site deep within the body. The instrument has an elongated proximal portion that is constructed to follow a long, torturous path to the site and has a distal end constructed to sever and remove a tissue sample from the body, including tissue specimens, polyps or the like. The instrument is constructed to take multiple biopsy samples without being withdrawn from the body. The instrument includes a tissue sample retractor. The retractor is axially movable between an extended tissue-engaging position and a retracted position. There is an open passage into which the retractor moves when moving from the extended to the retracted position. The retractor has a distal end portion constructed to engage tissue and apply axial transporting force thereto while moving from the extended to the retracted position. The retractor is constructed to be advanced and retracted repeatedly to accumulate a series of samples in the instrument.
摘要:
The cylindrical enclosure 12 of a recuperator 10 as in FIG. 2 contains an annular coaxial heat exchanger 50 full of cooling liquid 22 circulating therethrough. Exhaust gas from an internal combustion engine flows from an inlet end 32 through the heat exchanger 50, first in an axial region 15 via a conduit 14, then back through a surrounding annular region 18, then through tubes 37 to an outlet end 34. The inlet 30 and outlet 31 for the gas are in the side wall 40 of the cylindrical body 12, and the exhaust gas 11 enters and leaves via conduits 14 and 19 that are perpendicular to the side wall 40 at the inlet 30 and at the outlet 31. So the ends 41 and 42 of the body 12 are free of adjacent obstruction, and at least one of them is removable, as in FIG. 4 or FIG. 5 . Thus, the recuperator 10 can be opened and closed to make the interior accessible for inspection, cleaning, or other desired purpose.
摘要:
A device for exercising an articulated limb such as a finger includes an elastomeric element for biasing the finger to a flexed position and a motorcontrolled cable is provided to oppose the flexion bias. The elastomeric element, motor, and cable are carried on the arm by a splint. A feed mechanism is provided for regulating the length of cable, which in turn regulates the degree of flexion and extension. The feed mechanism includes a motor having an automatic mode which continuously reverses motor operation when programmed flexion and extension limits are reached. An overtravel is provided to maintain a constant tension on the cable should a sudden extension of the finger prevent proper cable feed or take-up.
摘要:
A system for producing understeer characteristics in an articulated earthmoving vehicle. A fluidic accelerometer continuously senses lateral acceleration of the vehicle to modify the operator's input signal, causing hydraulic jacks to articulate the vehicle in such a manner as to exhibit an understeer steering characteristic. The accelerometer is mounted at or near to the roll axis of the vehicle to minimize the effects of vehicle roll dynamics upon the signal communicated to the steering control system and hydraulic jacks. The accelerometer and hydraulic jack control assemblage is utilized to create understeer characteristics in both follow-up and non-follow-up type steering systems.
摘要:
An electro-analytical cartridge adapted for use in analyzing fluids. The cartridge includes an electrochemical device that measures ionic activity using ion-specific electrodes. The cartridge further includes a plumbing system composed of the electrochemical device and various wells or chambers which are interconnected by passageways. After introduction into the cartridge, liquid samples are measured out and transported to the electrochemical device utilizing a sequential application of centrifugal force followed by pressurization of the system. Reference fluid is transported from a reference fluid well or reservoir to the electrochemical device for use in measuring ionic activity. The cartridge may be used to measure the ionic activity of a wide variety of ions in fluids including bodily fluids.