摘要:
Aluminium-silicon powder mixtures comprising a hypereutectic Al-Si powder, a near eutectic Al-Si powder, and a third powder which is aluminium or a hypoeutectic aluminium alloy containing alloying constituents other than silicon and less than 9 wt% silicon, with a sintering aid comprising a fourth, zinc-containing powder, are pressed and sintered to provide powder metallurgy products suitable for automotive component use in particular. The third powder in the composition permits such Al-Si powder mixtures to be compressed to a density approaching that obtained by use of an annealed powder mixture, but without the annealing step.
摘要:
Methods of making a coating on a medical device are disclosed, including associating a composition with at least a portion of the device to form a layer. In some embodiments, a composition may include a copolymer prepared from a room temperature melt of a plurality of monomer units that comprises a first monomer unit and a second monomer unit, wherein the second monomer unit has a glass transition temperature that is at least about 30 degrees Centigrade higher than the glass transition temperature of the first monomer unit, with a glass transition temperature of a monomer unit being defined as a glass transition temperature of a homopolymer of that monomer unit.
摘要:
A doorway mounted body exercise apparatus has upper and lower horizontal bars bridging the doorway and carrying respective pulleys and, a rearwardly protruding weight set supporting arm which can be swung between either lateral side to the rear of the doorway to accommodate left and right hand hinged doors and can be retracted into the doorway to permit the door to be completely closed while still mounted. Different cabling arrangements enable the weight set to be used as a counter weight for body weight assistance or additional resistance. An upper frame carrying the upper bar is collapsible for removal and storage or to enable a person to walk through the doorway. The lower bar is hinged at one end to the jamb for swinging up against the jamb so as not to obstruct the doorway when not in use. Footpads on the upper frame enable exercising while hanging upside down.
摘要:
A collapsible organizer (200) for dividing a vehicle storage area into at least two storage compartments comprises a base (202) having hinges (210) for rotation between a stored position and an in use position; a fixed wall (208); a divider wall (204), mounted to said base; means for connecting said base to said vehicle storage area; and at least two partitions (206) extending between said fixed wall and said divider wall; wherein when said organizer is in said in use position, said divider wall is spaced apart from and generally parallel to said fixed wall and when said organizer is in said stored position said divider wall is adjacent said base and said fixed wall.
摘要:
An ultrasonic field-portalbe system for accurately measuring hematocrit (HCT) and hemoglobin concentration (HGB) in small food samples. The system includes an analyzer (10) that allows extremely accurate measurements of blood hematocrit from only one or two drops of +>>d collected in a disposable sampling device (12) that is then iserted into the analyzer (10). The system is compact enough to package into a point of care device, making it a point of care device with accuracy comparable to larger CBC lab equipment.
摘要:
A fluid sampling device (100) that operates by a combination of capillary action to collect a small fluid sample, and by pressure differential when inserted into an analyzer (200) to expose the fluid sample for testing by the analyzer (200). The device is especially suited for use as a disposable blood sampling unit designed to interface with a blood analyzer, albeit the concept of the invention may be employed for sampling and testing virtually any fluids.
摘要:
A ratchet wrench comprises an output drive member (13, 37) rotatable about a first axis, a drive housing (15) containing the output drive member, and a handle (14) on the drive housing for rotating the drive housing about the first axis. A rotary member (24) within the handle is rotatable about a second axis and a drive ring (21) extends around the output drive member. A coupling means (25) couples the rotary member to the drive ring so that rotation of the rotary member about the second axis causes rotation of the drive ring about the output drive member. The wrench also includes primary ratchet means (17, 42) for selectively uni-directionally coupling the output drive member to the housing, and secondary ratchet means (23, 43) for selectively uni-directionally coupling the output drive member to the rotary member through the drive ring whereby the output drive member (13, 37) can be rotated in a selected direction either by rotation of the handle (14) or by rotation of the rotary member (24).
摘要:
A dry powdered fire retardant composition for mixing with water on-site comprising dry powdered guar in the range of approximately 40% to approximately 90% by weight and a dry powdered fire retardant salt in the range of approximately 10% to 60% by weight. The dry powdered guar is extremely hygroscopic for mixing on-site. The dry powdered fire retardant salt is a dry powdered mono-ammonium phosphate.
摘要:
A pneumatically actuated valve assembly for use as intake and/or exhaust valves on two- or four-stroke internal combustion engines. The assembly includes a valve (100), valve housing (200), and compressed gas distribution and timing mechanisms (Figures 5-8). The valve (100) is comprised of a short light weight hollow cylindrical body with a capped lower end and an opened upper end. The valve is further defined by a plurality of ports (104) adjacent to the lower end and a collar (198) encircling the body adjacent the upper end. The valve housing (200) is hollow and tubular having a larger diameter upper section and a smaller diameter lower section in which the valve (100) slides up to close and down to open. The housing (200) further includes hollow channels which direct compressed gas, managed by the distribution and timing mechanism, alternately towards the areas above and below the valve collar at regular intervals to open and close the valve, respectively.
摘要:
Device and method for transport of light building panel are meant for transport of light building panels or similar building elements as long as elements are comprised of filling and shell. The shell and filling should be designed to enable attachment of panel at least on one side. The device is simple and easy to use with its components comprising attachment head. It distributes the weight of the building panel alongside the attachment which resolves problem of damaged shell and damaged coloring of the panels. It also provides for easy and fast attachment of the panel to the transport device without additional tools not usually accessible at the construction side.