Abstract: Applications of barrier coating mixtures containing in a carrier liquid, (a) an elastomeric (preferably butyl-containing) polymer; (b) a dispersed exfoliated layered filler having an aspect ratio greater than 25; and (c) at least one surfactant, wherein the solids content of the mixture is less than 30% and the ratio of polymer (a) to filler (b) is between 20:1 and 1:1 include coated articles, which are elastomeric, e.g., sports balls and inflatable articles. Methods of manufacturing such coated products are also encompassed.

Abstract: Barrier coating mixtures contain in a carrier liquid, (a) an elastomeric (preferably butyl-containing) polymer; (b) a dispersed exfoliated layered filler having an aspect ratio greater than 25; and (c) at least one surfactant, wherein the solids content of the mixture is less than 30% and the ratio of polymer (a) to filler (b) is between 20:1 and 1:1. Coated articles, which are rigid or flexible and elastomeric, and free-standing films and membranes, which are flexible and elastomeric, are produced using the barrier coating mixtures.

Abstract: A hand held apparatus for automatically identifying a hybrid or monolithic integrated circuit or any standard circuit module having a known pin configuration (10) and an unknown identity. A plurality of test instructions (FIG. 6 ) for devices of known identity are stored in a test procedure memory (22) and sequentially provided (125) to the unit under test until the unit either passes a test thus revealing its identity (137) or fails all tests in the memory (145). The socket (10) is connected to a pair of peripheral chips (25a, 25b) having pin definable input/output ports (46, 65, 66) which are used selectively to treat any pin as input, output, or supply.

Abstract: A power supply (17) having a regulator featuring a series pass transistor (150) connected as a common collector amplifier is shown. The power supply is turned on and off by switching devices (11, 151, 160, 159) which control base current only to a transistor switch (155, 170) operating analog circuitry (157) which controls the pass transistor. Microcomputer control (181) of the power supply and self latching embodiments are also shown. The power supply shown herein can successfully regulate output voltages which differ from the raw DC input by no more than the saturation voltages of series pass transistor.

Abstract: A battery operated microcomputer controlled programmable circuit testing device. Standard I/O/memory devices (25a, 25b) are connected to a microcomputer (20) in such a manner as to treat the I/O ports (46, 47) of the I/O memory devices as programmable interfaces and to allow pin receptors in a socket (10) to be individually programmed as inputs or outputs. Double detent switches (12, 13) connected to testable inputs T0, T1, 45) the microcomputer are used to scroll a roll table containing names of devices which may be tested in either a forward or a reverse direction at two different speeds. Compression of the roll table storage is provided by storing only data which differs from the previous element. A power supply (17) having a regulator featuring a series pass transistor (150) connected as a common collector amplifier is shown.