PURPOSE:To obtain an objective which has a long working distance and excellently compensated aberrations off the axis by specifying the conditions of a lens system consisting of three groups. CONSTITUTION:This objective consists of the 1st group G1 of a negtive lens having concave surface on the side of a far conjugate point and a positive lens cemented thereto, the 2nd group G2 of a positive lens...

PURPOSE:To obtain an AGC system resistant to external noises and high in gain setting accuracy by providing an A/D converter giving a control signal to a main intermediate frequency amplifier whose gain is varied digitally. CONSTITUTION:An output of a main intermediate frequency amplifier 9 is detected by a detector 2, compared with a reference voltage VREF by an AGC amplifier 4, and converted int...

Apparatus, particularly electrostatic spraying apparatus, comprising a container and an enabling device wherein the container has a discharge valve that is held in the closed position by sprung member(s) that can be urged out of engagement, so as to permit valve actuation, upon connection of the enabling device to the container.

PURPOSE:To reduce the frictional force between a lead wire and a winding arm or the nozzle part of the arm in particular, for preventing the lead wire to be wound on a spool from being damaged, by holding the nozzle part which is formed separately from a lead wire holding member, rotatable with respect to the lead wire holding device. CONSTITUTION:Each nozzle part 13 formed in a nozzle section 13 ...

PURPOSE:To improve connection precision and to carry out connecting operation easily even outdoors by providing recessed or projection parts to the outer circumference of an inside circular sleeve adhered to an optical fiber which maintains the plane of polarization. CONSTITUTION:The coating material 2 of the polarization-plane maintaining optical fiber 1 whose outward appearance is circular is pe...

A clamping device for retaining a catheter in position within the body of a patient comprises a face plate or disc (1) adapted to be placed on and secured to the body of a patient. The disc (1) has an aperture (3) through which the catheter may extend. A clamp extends from one face of the disc (1) and comprises a first clamp part (4) secured to the disc (1) adjacent the aperture and a second clamp...

PURPOSE:To obtain the titled apparatus, easily handleable, capable of giving an ethanol distillate of high concentration, and requiring a little energy for recovering the ethanol. CONSTITUTION:A sake lee, containing an alcohol, and fed from a raw material charging port into the inner cylinder 3 of the body is crushed by rotating agitating paddles 11 and crushing blades (10a), and a carrier gas war...

PURPOSE:To prepare absolute ethanol from dilute ethanol raw material, economically, by using a pair of concentration columns, heating the azeotropic distillation column and the pot of the solvent recovery column with the vapor from the top of the first concentration column operating under pressure, and heating the pot of the second concentration column with the vapor obtained from the top of the s...