Abstract: A mechanical pencil comprises a shaft cylinder (1), a lead pipe (3) axially movably inserted into the shaft cylinder (1) and biased in a retract direction, and a chuck body (45) provided within the shaft cylinder (1) in front of the lead pipe (3) for releasably griping a writing lead (S). The lead pipe (3) and the chuck body (45) are separated, the lead pipe (3) is inserted into the shaft cylinder (1) with axial movement thereof being permitted and circumferential rotation thereof being restricted, and the chuck body (45) is positioned within the shaft cylinder (1) in front of the lead pipe (3) so as to be movable in an axial direction and circumferentially rotatable. A lead rotation mechanism (5) is provided between a back part of the chuck body (45) and a front part of the lead pipe (3).

Abstract: The invention relates to a liquid supply device utilizing a rotating cam mechanism for supplying a liquid. In the liquid supply device for smoothly supplying a liquid with the assistance of pressurizing action, switching operation by the rotating cam mechanism can be carried out reliably. A liquid housing tube 14 housing a liquid is disposed to be movable in an axial direction in an outer shaft and has a tip end chip 32 movable between a protruding position from a tip end of the outer shaft and a retracting position in the outer shaft. A rotating cam mechanism 16 which can move the liquid housing tube 14 forward and backward includes a rotating cam 40 movable between a front position and a rear position and a pressurizing space 18 to be compressed to be able to pressurize an inside of the liquid housing tube 14 when the tip end chip 32 is in the protruding position is provided in a rear portion in the rotating cam 40.

Abstract: A needle thread passing device is capable of being constructed in a small size for easy storage. A needle receiving member 34 has a needle insertion hole 34c and a thread insertion slit 34e forming an angle with the needle insertion hole 34c. A needle threader member 42 is movable between positions away from and close to the needle receiving member 34 and has a needle threader pin 48b that can push a thread inserted through the thread insertion slit 34e into a needle eye 52a of a needle 52 inserted into the needle insertion hole 34c when the needle threader member 42 moves from the position away from the needle receiving member 34 to position close thereto. A cover 32 can move with respect to a main body 30 containing the needle receiving member 34. The needle threader member 42 is constantly biased toward the position away from the needle receiving member 34.

Abstract: A liquid supply implement can accommodate a large amount of liquid without being subjected to limitation of a capacity of a temporary storage chamber temporarily storing the liquid overflowing a tank, or can reduce the capacity of the temporary storage chamber. A tank formed inside a rear barrel and accommodating a liquid is divided into a plurality of tank portions. In order that all the tank portions do not communicate with a tip end supply element between the tank and a pen tip, any one of a plurality of through-holes of an inner plug respectively communicating with the respective tank portions is allowed to communicate with one through-hole formed in a lateral wall of a front barrel. By rotating the rear barrel with respect to the front barrel, selected tank portion can be switched.

Abstract: A lead cartridge that is provided with a tank part for storing leads and is capable of being detachably connected to a receiving part provided in a lead feeding mechanism of a mechanical pencil to supply a lead can reduce costs for manufacturing the lead cartridge and the number of manufacturing steps and can prevent a lead from falling out from the lead cartridge inadvertently. The lead cartridge 10 includes a case 12 and a swing cover 14. A tank part 12a is defined inside the case 12 and the tip end part of the case 12 is formed with an open tip end connection part 12b. Between the tank part 12a and the tip end connection part 12b, a lead port 12e is formed. The swing cover 14 is mounted in the case 12 swingably to a closing position where the swing cover 14 closes the lead port 12e and to an opening position where the swing cover 14 opens the lead port 12e.

Abstract: There is provided a liquid applicator allowing a liquid to be easily replenished and replaced, as well as capable of containing a large amount of liquid. The liquid applicator includes a main body provided with a tank inside thereof, a tip shaft that is coupled to the tip end side of the main body, and a brush that is fixed in the tip shaft and projecting from the tip end of the tip shaft. A liquid may be sucked into a tank by releasing the coupling of the main body and the tip shaft, sinking a tip end opening of the main body in the liquid, and sliding a sliding cylinder attached to the rear portion of the main body.

Abstract: In one aspect of the present invention, an optical coupling may include a supporting member which has a first surface, a second surface on the opposite side of the first surface, and an opening portion, and which is formed of an insulating material, a first wiring layer provided on the first surface of the supporting member, a second wiring layer provided on the second surface of the supporting member, a light emitting element which is provided on the first surface, and which is connected to the first wiring layer, and at least one portion of which faces the opening portion, a light receiving element which is provided on the second surface, and which is connected to the second wiring layer, and which faces the light emitting element through the opening portion, a light shielding resin provided so as to cover the light emitting element, the light receiving element, and the first wiring layer and the second wiring layer.

Abstract: An eraser dispenser is provided which can store in a dispenser body an eraser longer than the overall length of the dispenser body. The eraser dispenser enables the eraser to be used without replacement with a new one for a long period of time. The eraser dispenser includes: a dispenser body which is enclosed by an outer circumferential wall having a distal opening and has a storing chamber capable of storing therein an eraser that is longer than the overall length of the dispenser body; and a cover which covers the dispenser body. The eraser dispenser further includes; an external operation member which partially projects from the outer circumferential wall and is operated from the outside of the dispenser body; a driving roller which is operated by the external operating member; a receiving member which is disposed opposite to the driving roller with the eraser held therebetween; and a stopper which prevents a rotary button as the external operation member from undergoing reverse turn.

Abstract: An optical semiconductor device includes a first set of lead frames having a first set of element mounting beds, a second set of lead frames having a second set of element mounting beds, which are arranged substantially on a same plane as the first set of element mounting beds. A light-emitting element is mounted on one of the first set of element mounting beds and having a pair of electrodes connected to the first set of lead frames respectively. A light-receiving element is arranged at a position facing to the light-emitting element and having a pair of electrodes connected to the second set of lead frames respectively. A supporting means is mounted on the second set of element mounting beds for supporting the light-receiving element at the position facing to the light-emitting element and for receiving a light emitted from the light-emitting element.

Abstract: A liquid supply implement which can accommodate a large amount of liquid without being subjected to limitation of a capacity of a temporary storage chamber temporarily storing the liquid overflowing a tank, or can reduce the capacity of the temporary storage chamber is provided. A tank formed inside a rear barrel and accommodating a liquid is divided into a plurality of tank portions. In order that all the tank portions do not communicate with a tip end supply element between the tank and a pen tip, any one of a plurality of through-holes of an inner plug respectively communicating with the respective tank portions is allowed to communicate with one through-hole formed in a lateral wall of a front barrel. By rotating the rear barrel with respect to the front barrel, selected tank portion can be switched.

Abstract: A lead cartridge capable of holding a rod-shaped object of a sufficient length and allowing simultaneous replacement of the lead and the rod-shaped object is to be provided. A lead cartridge which includes a lead tank for containing leads and is detachably incorporated into a mechanical pencil to supply leads has a rod-shaped object feeding mechanism which propels the rod-shaped object by turning manipulation. This rod-shaped object feeding mechanism is configured of a spiral groove formed in the inner circumferential surface of a case comprising the lead tank, a guide sleeve which is arranged in the case to be unable to move in the axial direction and able to turn relative to the case and in which guide holes extending in the axial direction are formed, and a receptacle which is slidably fitted into the guide holes of the guide sleeve and has a male thread screwing into the spiral groove. A rod-shaped object is held by the receptacle.

Abstract: A cartridge type liquid feeding container is capable of being used by refilling or replacing a liquid instead of throwing away the container itself, and can feed out the liquid inside the cartridge. The liquid feeding container includes a body, a manipulating body which is mounted movable with respect to the body and is made capable of being manipulated from an outside, a cartridge which is loaded into the body so as to be attachable and detachable, a liquid supplying body for supplying the liquid inside the tank portion to the outside, a piston rod which is workable on the piston to press the piston of the cartridge forward, and movable inside the cartridge case and body, and a conversion mechanism for converting a manipulating force applied to the manipulating body into forward movement of the piston rod.

Abstract: A side knock type feeding mechanism for feeding an object to be fed inside a body by side knock. A front barrel which houses an object to be fed and is capable of feeding the object to be fed from a tip end opening, a knock button provided on a side portion of the front barrel so as to project and retract with respect to the front barrel, a rotary member which is inside the front barrel, rotates in a predetermined direction by knock of the knock button as a result that the knock button works, and rotates in an opposite direction by releasing the knock, a piston for feeding out the object to be fed, and a conversion mechanism for converting the rotation of the rotary member into a forward travelling motion of the piston in an axial direction inside the front barrel.

Abstract: An optical semiconductor device includes a first set of lead frames having a first set of element mounting beds, a second set of lead frames having a second set of element mounting beds, which are arranged substantially on a same plane as the first set of element mounting beds. A light-emitting element is mounted on one of the first set of element mounting beds and having a pair of electrodes connected to the first set of lead frames respectively. A light-receiving element is arranged at a position facing to the light-emitting element and having a pair of electrodes connected to the second set of lead frames respectively. A supporting means is mounted on the second set of element mounting beds for supporting the light-receiving element at the position facing to the light-emitting element and for receiving a light emitted from the light-emitting element.

Abstract: An optical semiconductor device includes a first set of lead frames having a first set of element mounting beds, a second set of lead frames having a second set of element mounting beds, which are arranged substantially on a same plane as the first set of element mounting beds. A light-emitting element is mounted on one of the first set of element mounting beds and having a pair of electrodes connected to the first set of lead frames respectively. A light-receiving element is arranged at a position facing to the light-emitting element and having a pair of electrodes connected to the second set of lead frames respectively. A supporting means is mounted on the second set of element mounting beds for supporting the light-receiving element at the position facing to the light-emitting element and for receiving a light emitted from the light-emitting element.

Abstract: In a liquid container, it is made possible to store liquid that is overflowed by fluctuations in atmospheric pressure and thereby to prevent liquid leaks, and the whole quantity of the stored liquid is enabled to be used. The liquid container is provided with a body having a main tank in which liquid is stored; a supply outlet, located toward the tip of the body, for supplying the liquid; a guiding portion connecting the main tank and the supply outlet to guide the liquid from the main tank to the supply outlet; and a liquid reservoir having an air flow port communicating with the exterior and a liquid flow port communicating with the main tank or the guiding portion and an overflowing liquid flow path for storing liquid overflowing the main tank. The liquid is stored farther away from the supply outlet than the liquid flow port.

Abstract: A semiconductor optical device includes a semiconductor substrate and a stacked body formed by at least a first cladding layer, an active region and a second cladding layer; wherein both sides of the stacked body are buried by a burying layer formed by a semi-insulating semiconductor crystal; the burying layer includes a first layer that is placed adjacent to both sides of the stacked body and a second layer that is placed adjacent to the first layer; the first layer includes Ru as a dopant; composition of the second layer is different from the composition of the first layer, or a dopant of the second layer is different from the dopant of the first layer. The device can also be configured such that the width of the active region is smaller than the width of the cladding layers of the stacked body; and a Ru-doped semi-insulating layer is provided in a space between the burying layer and the active region in both sides of the active region.

Abstract: A writing implement has a barrel provided with a separate front cap or a front cap formed integrally with the barrel, a writing member placed in the barrel, pushed constantly backward by a return spring and capable of axially sliding in the barrel, and a stylus mechanism.

Abstract: A writing implement has a barrel provided with a separate front cap or a front cap formed integrally with the barrel, a writing member placed in the barrel, pushed constantly backward by a return spring and capable of axially sliding in the barrel, and a stylus mechanism.

Abstract: A semiconductor optical device includes a semiconductor substrate and a stacked body formed by at least a first cladding layer, an active region and a second cladding layer; wherein both sides of the stacked body are buried by a burying layer formed by a semi-insulating semiconductor crystal; the burying layer includes a first layer that is placed adjacent to both sides of the stacked body and a second layer that is placed adjacent to the first layer; the first layer includes Ru as a dopant; composition of the second layer is different from the composition of the first layer, or a dopant of the second layer is different from the dopant of the first layer. The device can also be configured such that the width of the active region is smaller than the width of the cladding layers of the stacked body; and a Ru-doped semi-insulating layer is provided in a space between the burying layer and the active region in both sides of the active region.