摘要:
Disclosed is a solid binder composition containing from about 70 to about 98 percent by weight of TDI residue and correspondingly from about 2 to about 30 percent by weight of a select ester derived from a dicarboxylic acid. When the binder composition is used in making lignocellulosic composite materials, such as particle board, the ester acts as an effective internal mold release agent, facilitating release of the composite material from the mold.
摘要:
A process is disclosed for continuously manufacturing minute capsules in a closed conduit under conditions of non-turbulent flow. The continuous microencapsulation process comprises in-line emulsification of intended capsule core material in a liquid manufacturing vehicle comprising negatively-charged polyelectrolyte material and methylol melamine or etherified methylol melamine followed by conduction of the emulsion, under non-turbulent flow conditions, through a tubular reactor maintained at a single, elevated temperature.
摘要:
A tamper-resistant housing assembly may include an internal housing that is wrapped in a flex circuit. The flex circuit can cover an outside surface of the internal housing and can carry a conductive electrical trace. The electrical trace can define a continuous electrical path from a first contact pad to a second contact pad, such that piercing the an outer surface of the housing through to the inner surface of the housing interrupts the continuous electrical path.
摘要:
A connector assembly (100) includes a mother board (12), a mother receptacle (11), a daughter board (22), a daughter receptacle (21), and a connecting device (30) mounted between said two boards. The connecting device includes a shroud (31), a pair of standoffs (32) mounted at opposite sides of the shroud and engageable with the two boards, and an extender (33) positioned alongside the shroud and between the pair of standoffs. The extender defines a lower interface (332) mating with the mother receptacle and an upper interface (331) mating with the daughter receptacle.
摘要:
A connector assembly (100) includes a mother board (12), a mother receptacle (11), a daughter board (22), a daughter receptacle (21), and a connecting device (30) mounted between said two boards. The connecting device includes a shroud (31), a pair of standoffs (32) mounted at opposite sides of the shroud and engageable with the two boards, and an extender (33) positioned alongside the shroud and between the pair of standoffs. The extender defines a lower interface (332) mating with the mother receptacle and an upper interface (331) mating with the daughter receptacle.
摘要:
The present invention provides an apparatus for reducing acoustic noise in a magnetic resonance imaging device including passive shielding located outside the actively shielded gradient winding elements in order to reduce the magnitude of fields that spread outside the gradient coil assembly in unwanted directions and interact with the magnet cryostat or other metallic magnet parts, inducing eddy currents that cause consequent acoustic noise. The passive shielding elements are conducting layers located on the outer radius of the cylindrical gradient coil assembly in a cylindrical magnet system, conducting layers located at the ends of the gradient coil assembly in a cylindrical magnet system, and conducting layers located inside the actively shielded gradient winding inner elements in a cylindrical magnet system. The passive shielding could also be located on separate structures that are vibrationally isolated from the magnet cryostat. The actively shielded gradient winding can also be extended to portions at the ends of the actively shielded gradient winding and further to portions inside the inner radius of the inner portion of the actively shielded gradient winding. The actively shielded gradient windings and passive shielding should be designed concurrently in order to substantially optimize the gradient linearity and reduce the eddy currents generated in metallic parts of the magnetic resonance imaging system.
摘要:
A connector module for receiving a signal converter and electrically connecting the signal converter to a printed circuit board mounted within an electronic system. The connector module includes a conductive cage having a plurality of press-fit type pins and a shielding lid. The connector module further defines a top opening and a cavity with an opening on a bottom portion of the conductive cage for receiving the connector which electrically connecting with the signal converter. The shielding lid covers on the top opening. The connector comprises a plurality of contacts each having a press-fit end, said press-fit ends extending toward the printed circuit board and mounting therein.
摘要:
An electrical connector (1) straddle-mounted on an edge (20) of a printed circuit board (2) includes an insulative housing (10) having an elongated groove (11) for mating. A support subassembly (3) is inserted from the opposing side of the housing (10) to expose its portions in the groove (11). The support subassembly (3) includes two bases (30) with attached signal conductors (5) and a U-shaped ground member (4). Two parallel-arranged side portions (40) of the U-shaped ground member (4) are integrally connected via its central portion and each of them is located parallel to a row of signal conductors (5) as their ground reference. The united ground member (4) can be used to establish ground path to the printed circuit board (2) by fewer contacting legs (42) sheared therefrom and help all parts of the support subassembly (3) to be installed in the connector housing (10) at one time.
摘要:
A pump for high temperature liquid includes a duct interconnecting the suction inlet space, and the annular clearance space between the shaft and the pressure housing at a point immediately adjacent to the seal around the shaft. During hot stand-by uniform thermosyphon circulation of liquid occurs from the suction inlet space through the annular clearance space and back to the suction inlet via the duct, which helps prevent thermal stresses being set up in the shaft.
摘要:
Oxazolidone-containing isocyanurate foams characterized by thermal stability at a temperature of about 140.degree. C. or higher. These foams are produced by reacting at least one polyisocyanate with at least one polyepoxide in the presence of catalyst, surfactant, and blowing agent.