Abstract: A process is, herein, disclosed for preparing a membrane used for prevention of short-circuiting between the anode and the cathode of a battery comprising contacting a polyethylene film with an aqueous solution of acrylic acid, water, ethylene dichloride and ferrous salt or cupric salt and irradiating with ionizing radiation to obtain a polyethylene film with acrylic acid molecules grafted uniformly thereon.

Abstract: A bracket member which connects an axle shaft housing to the chassis of a fork lift truck and supports a tiltable mast, is formed with a circular recess into which fastening bolts and flanges of the axle shaft housing project for reducing the fork lift truck tread width.

Abstract: The present invention relates to a high performance lead-acid storage battery having a special microporous separator between a positive and a negative plate in a cell of the battery. The separator is comprised of a microporous embossed thin sheet having many small projecting embossed parts which provides unique characteristics in a cell including low electric internal resistance in the cell, sufficient electrolyte between the plates in the cell and sufficient elasticity of the separator to prevent active material shedding, thereby giving a high performance at a high rate of discharge and long life.

Abstract: A D.D.A. (Digital Differential Analyzer) for pulse interpolation having a memory counter with more than two bit positions for counting the number (m) of input instruction pulses in each interpolation cycle, a second counter for receiving the content of the memory counter, and an auxiliary adder for obtaining m multiple of the content of the integrand register in the D.D.A. system. The output of the auxiliary adder instead of the output of the integrand register is applied to an interpolation adder. Thus, the pulse interpolator can operate correctly even when more than two input instruction pulses are generated within a single interpolation cycle.

Abstract: The present invention relates to a high performance lead-acid storage battery having a special microporous separator between a positive and a negative plate in a cell of the battery. The separator is comprised of a microporous embossed thin sheet having many small projecting embossed parts which provides unique characteristics in a cell including low electric internal resistance in the cell, sufficient electrolyte between the plates in the cell and sufficient elasticity of the separator to prevent active material shedding, thereby giving a high performance at a high rate of discharge and long life.

Abstract: This invention relates to a solution separating and recovering equipment:The equipment is formed by overlapping one or more sets of plates each of which includes a separating plate having a separation module or separating element therein which is formed by zigzag bending and laminating a flat microporous membrane, a solution guide plate and a permeate guide plate.