Abstract: A portable liquid purifying device for dispensing a liquid, which includes a squeezable bottle made of a soft material and containing a mass of the liquid, a filtering member removably engaging a bottleneck of the bottle, and a cover assembly for covering a spout formed through the filtering member so as to fluid-tightly close the spout. The filtering member has a first section which accommodates activated carbon, and a second section which accommodates a micro-porous membrane filter including hollow fibers, the first and second sections being disposed in series so that the liquid delivered out of the bottle passes through the first and second sections in this order. The filtering member is fluid-tightly and air-tightly attached to the bottleneck such that the filtering member does not protrude past the bottleneck. The cover assembly has a first position for fluid-tightly closing the spout, and a second position for opening the spout so as to permit the liquid to flow out of the device.

Abstract: A method of cleaning and disinfecting a contact lens comprising immersing a contact lens in a treating solution, applying a direct current to the treating solution with repeatedly reversing a positive electrode and a negative electrode of a pair of electrodes plural times to generate peroxide and raise the temperature of the treating solution so that the interval of time before reversing is different from or equal to the interval of time after reversing to 50.degree. to 100.degree. C., and bringing the contact lens into direct contact with bubbles generated on the electrodes. Since this method is excellent in electrical safety and cleaning and disinfecting effects, contact lenses can be easily cleaned and disinfected.

Abstract: An integrated circuit is provided for reducing scale of flip-flops which can be connected in the form of a shift register by the switching operation, in order to facilitate the test during the manufacture of an integrated circuit (gate array). One selector for switching a clock signal for the flip-flops to either of a system clock signal and a scan clock signal is provided not for each of the sequential circuits, but for each of the clock systems for these sequential circuits. In a case of a gate array, for example, this allows a reduction of three gates for each flip-flop to be realized.

Abstract: A liquid purifying attachment for dispensing a liquid from a container, which includes a cylinder fluid-tightly attached to the container, and a piston fluid-tightly fitted in the cylinder bore such that the piston is slidably movable between a retracted and an advanced position, relative to the cylinder. The piston and the cylinder define a cylinder chamber into which ambient air is introduced upon movement of the piston toward the advanced position. The introduced air is compressed and fed into the container upon movement of the piston toward the retracted position, to deliver the liquid out of the container, through a filter disposed in a liquid delivery path which is exposed to the ambient air and communicates with the liquid mass.