PURPOSE: To reduce an internal pitch error by displacing one of two coil windings in reference to the other at each pitch part. CONSTITUTION: Coil windings 4 and 5 are arranged while crossing the direction of relative movement of a slider 2 regarding a scale 3 on a metal base with the slider 2 and the scale 3. The coil windings 4 and 5 are connected while being displaced by T/4 pitch via an insulation layer in periodical zigzag shape with an equal pitch T by an active wire. Therefore, when a voltage is supplied to the slider 2 by a supply block 6, an induced voltage is amplified to a desired amplitude 7 and 8 and is transferred to measurement blocks 9 and 10 for measuring the change in the phase and amplitude of a voltage. Also, since each output of the coil windings 4 and 5 is displaced by 1/4 pitch at the part of each pitch 12, the output is compensated differentially, the internal pitch error of the scale 3 is reduced before being inputted to a computing block 11, and the operation values are calculated.

Transformer scale for measuring displacement

PURPOSE: A curtain wall fixture is provided to heighten economical efficiency such as the improvement on quality, the reduction of the unit price on construction, etc. by fixing a curtain wall to a structure simply and firmly. CONSTITUTION: A curtain wall fixture comprises: an anchor(30) laid under a side of a slab(10); a connecting angle(40) as an L-shaped metallic material whose one side is fixed to the anchor and the other side is fixed to a vertical member(20) of a curtail wall, wherein a long elliptic bolt hole(41) and a rugged surface(42) are formed on each L-shaped side; a primary nonskid bar(50a) as a plate-shaped member provided with a hole formed on the center, a rugged surface formed on one side to engage with the rugged surface of the connecting angle fixed with the anchor; a primary bolt(60a) fitting the anchor, the connecting angle and the primary nonskid bar(50a); a secondary nonskid bar(50b) formed to engage with the rugged surface of the connecting angle fixed with the vertical member of the curtain wall; and a secondary bolt(60b) fitting the vertical member of the curtain wall, the connecting angle and the secondary nonskid bar.

An apparatus for fixing curtain wall

To provide an optical fiber cable with rollable ribbons contained in a central tube without intended stranding.SOLUTION: An optical fiber cable 10 includes a bundle of two or more non-twisted, rollable optical fiber ribbons 12 within a central tube 14. The bundle of non-twisted, rollable optical fiber ribbons defines a fiber packing density within the central tube of 6.5 to 8.5 fibers per square millimeter.SELECTED DRAWING: Figure 1

Optical fiber cable with rollable ribbons contained in a central tube without intended stranding

PURPOSE: To minimize signal attenuation by setting the excess fiber length and the sectional area of an optical fiber transmission medium and the inside diameter of a tubular member to such values that an excessive curvature and excessive interactive engagement between the inside wall of the tubular member and the fiber are avoided. CONSTITUTION: An optical fiber transmission medium 25 is longer than a tubular member 30. The excess fiber length and the sectional area of the optical fiber transmission medium 25 in the tubular member 30 and the inside diameter of the tubular member 30 are set to such values that the bend loss caused by an excessive curvature in the optical fiber transmission medium 25 and excessive interactive engagement between the inside wall of the tubular member 30 and the optical fiber transmission medium 25 is avoided. The excess fiber length allows optical fibers to expand or contract at the time of receiving a tensile force or a compressive force, and the inside diameter of the tubular member determines a capacity which optical fibers can use in the core. Thus, signal attenuation is kept minimum.

Optical fiber cable core

PURPOSE:To shorten the term of works as well as reduce building costs by providing grooves and projecting stripes to both of the mating face of a fastener body and reverse side of washers and by making them engage with each other. CONSTITUTION:To tapped holes 2 provided to a base body A, bolt-inserting holes 3 of a fastener body 1 are laid over. Projecting stripes and grooves 9 provided over the mating face 4 of the fastening body 1 and projecting stripes and grooves 10 provided over the reverse side of washers 5 are engaged with each other. The fastener body 1 is then fixed to the base body A by screwing bolts 6 down to the tapped holes 2 and by fastening the bolts with nuts 7. Then a panel B is connected to the base body A by inserting the bolts 6, planted to the panel B, into holes 3 from the external side of the fastening body 1, and by fastening the bolts 6 with nuts 7 through washers 5.

Furanshisu Guroodeisu Pooru

Papers

Optical fiber cable having refractive index reduction type clad