A light-receiving device has a high-concentration impurity layer of a first conductivity type and a high-concentration impurity layer of a second conductivity type surrounding it formed on a substrate of the first conductivity type having a low impurity concentration so as to function as a light-receiving portion. The high-concentration impurity layers of the first and second conductivity types are arranged in the same direction as the top surface of the substrate. A layer having a short carrier...

The tip of a ball screw (28) is mounted so as to be rotatable with respect to a pusher plate (14) but immovable in the axial direction. A ball nut (31), which mates with the ball screw (28), is attached to a rear plate (2) through a load cell (33). Even though a force in the rotating direction is applied to the ball nut (31) through friction as the ball screw (28) rotates, the applied force never acts as a force to rotate the pusher plate (14). Thus, the level of sliding resistances between the ...

In a mold clamping apparatus of an injection molding machine using five-point double toggles, a projection (17) is formed at a side of a link (14) of which one end is connected to a rear platen (6), that side being opposite to the side facing a crosshead (18). And a pin is inserted in a through hole formed in the projection (17) and a through hole formed in the other end of a link (16) of which one end is connected to the crosshead, with these through holes being in alignment with each other.

A ball spline nut is provided in each of tie bar penetrating holes formed in a moving platen constituting a mold clamping mechanism of an injection molding machine. On the other hand, a portion of a tie bar one end of which is fixed to a stationary platen, engaging with the tie bar penetrating hole in the moving platen, is made a ball spline shaft. Since there is no clearance between the ball spline shaft and the ball spline nut engaging therewith, in mold clamping and mold releasing processes, ...

Novel deazapurine derivatives of the formula: ##STR1## wherein R.sup.1 is C.sub.1-18 alkyl which may be substituted with di-C.sub.1-3 alkyl amino; C.sub.1-18 alkenyl; C.sub.3-8 cyloalkyl; C.sub.5-8 cycloalkenyl; C.sub.7-13 aralkyl which may be substituted with C.sub.1-4 alkoxy, C.sub.1-4 alkanoyl, C.sub.2-4 alkoxycarbonyl, hydroxy, amino, nitro, trifluoromethyl or C.sub.1-4 alkanoylamido; or C.sub.6-10 aryl and R.sup.2 is hydrogen or C.sub.7-13 aralkyl or, R.sup.1 and R.sup.2, taken together wit...

Novel 7-deazapurine derivatives of the formula: ##STR1## wherein X is halogen, Y is hydroxyl or di-C.sub.1-3 alkylamino, Z is a --NH-- or --NHC(.dbd.NH)-- group, l is an integer of 1 to 5, m is an integer of 0 to 2, and n is 1 when Z is a --NH-- group or n is 0 or 1 when Z is a --NHC(.dbd.NH)-- group, and salts thereof are selectively taken up by tumor cells.

An injection molding apparatus which enables easier monitoring of the nozzle touch condition from the outside of a clamping unit (70). A stationary platen (10) of the clamping unit (70) is furnished with monitoring holes (16a, 16b). The monitoring holes (16a, 16b) extend from at least either of the front and rear sides of the clamping unit (70) toward a locating hole (12) into which a sprue bush (51) of dies is located. The monitoring holes (16a, 16b) may be interlocked with shutters (22a, 22b) ...

A radial tire for high load which possesses excellent vibration damping performance, wherein a carcass cord reinforcing layer composed of fiber cords laid at a bias angle of between 30 and 90 degrees with respect to the radial direction of the tire is arranged adjacent to a carcass ply of a radial arrangement so that both edges thereof in the radial direction overlap with a belt and a bead reinforcing layer respectively by a certain amount.

A fuel injection system includes a fuel injector having a body, a needle valve movably provided in the body and a fuel accumulator having two chambers for storing a fuel at high and low pressures. An injection chamber is formed in the injector lower body and a control chamber is formed in the injector upper body. An injection passage connects the high pressure chamber with the injection chamber and a control passage connects the low pressure chamber with the control chamber. The needle valve is ...

7-Deazapurine derivatives of the formula: ##STR1## wherein R.sub.1 is hydrogen atom or an acyl group and R.sub.4 and R.sub.5 each is a hydrogen atom or a hydrocarbon residue which may optionally have one or more substituents or R.sub.4 and R.sub.5, together with the adjacent nitrogen atom, from a cyclic amino group are useful as an anti-tumor agent, microbicide or disinfectant.