Abstract: The injection needle removal device has: a cylindrical outer cylinder on an upper opening of an injection needle case; a helical track on an inner peripheral surface of the outer cylinder in a helical shape from an upper locking point to a lower locking point; a syringe holding cylinder helically advances in the outer cylinder along the helical track; an injection needle tightening ring on a lower end portion of the syringe holding cylinder, the injection needle tightening ring holds an injection needle base portion of a syringe in the syringe holding cylinder to clamp the injection needle base portion; and a locking mechanism that stops the syringe holding cylinder where the injection needle tightening ring is exposed from a lower side of the outer cylinder at the lower locking point.

Abstract: The injection needle removal device has: a cylindrical outer cylinder on an upper opening of an injection needle case; a helical track on an inner peripheral surface of the outer cylinder in a helical shape from an upper locking point to a lower locking point; a syringe holding cylinder helically advances in the outer cylinder along the helical track; an injection needle tightening ring on a lower end portion of the syringe holding cylinder, the injection needle tightening ring holds an injection needle base portion of a syringe in the syringe holding cylinder to clamp the injection needle base portion; and a locking mechanism that stops the syringe holding cylinder where the injection needle tightening ring is exposed from a lower side of the outer cylinder at the lower locking point.

Abstract: Provided is a needle removal operation cover with which a user can safely perform an injection needle removal operation even when a needle tip is directly inserted into the needle removal operation cover, and with which the user can remove the injection needle without requiring a wrist twisting motion.

Abstract: Provided is a needle removal operation cover with which a user can safely perform an injection needle removal operation even when a needle tip is directly inserted into the needle removal operation cover, and with which the user can remove the injection needle without requiring a wrist twisting motion.

Abstract: Provided is a shaft seal device provided with a seal member which possesses excellent liquid tightness, small friction resistance and high wear resistance. In a shaft seal device which is arranged around the periphery of a shaft which is supported in a rotatable manner or in a reciprocating manner, and is provided with a seal member for securing liquid tightness around the shaft, the seal member is formed of a porous body formed by using a hydrophilic polymer resin in which chains are cross-linked. The shaft seal device is also characterized in that: the shaft is a shaft which extends between a liquid phase region and a gas phase region; the seal member is a seal member which suppresses a leakage of a liquid to the gas phase region from the liquid phase region; and an aqueous lubricant which is prepared by adding a water soluble thickening agent is impregnated into the seal member.

Abstract: Provided is a shaft seal device provided with a seal member which possesses excellent liquid tightness, small friction resistance and high wear resistance. In a shaft seal device which is arranged around the periphery of a shaft which is supported in a rotatable manner or in a reciprocating manner, and is provided with a seal member for securing liquid tightness around the shaft, the seal member is formed of a porous body formed by using a hydrophilic polymer resin in which chains are cross-linked. The shaft seal device is also characterized in that: the shaft is a shaft which extends between a liquid phase region and a gas phase region; the seal member is a seal member which suppresses a leakage of a liquid to the gas phase region from the liquid phase region; and an aqueous lubricant which is prepared by adding a water soluble thickening agent is impregnated into the seal member.

Abstract: An artificial joint includes a ball and a cup constituting a pair of joint members which forms a joint. A convex curved surface and a concave curved surface which constitute a pair of friction surfaces which slides relative to each other are provided between the pair of joint members. The convex curved surface which is at least one friction surface out of the convex curved surface and the concave curved surface includes: at least either one of groove-shaped recessed portions and hole-shaped recessed portions having a width gradually narrowed toward the inside of the convex curved surface from a surface side of the convex curved surface; and curved surface portions which smoothly connect inclined surface portions which form the recessed portions and a surface which forms a surface portion of the convex curved surface.

Abstract: A system for detecting an outbreak of fire, for giving an audible alarm therefore as well as provided with a tactile alarm for disabled persons. This system comprises a main body to be attached to the ceiling, the wall and other structures, and a switch box to be provided at a position apart from the main body. The main body includes a fire sensing element for sensing an outbreak of fire, and an alarm to make an alarm sound based on a detection signal of the fire sensing element. The switch box includes a control switch capable of directly actuating the alarm. The switch box is further provided with a vibrating-type buzzer for vibrating the switch box so that a deaf or disabled person will be able to confirm the actuation of the alarm when it is actuated.

Abstract: A fire alarm device has, in a main body, a fire detection means and alarm means controllable by a detection signal from the fire detection means. The fire alarm device, which being independent in itself is installed on a ceiling or wall where the fire can be easily detected and produces an acoustic alarm as soon as the fire is detected. The detection element of the fire detection means is provided in front of a speaker for producing the acoustic alarm. Since the heat due to the fire is concentrated in front of the speaker, the detection element can react quickly.

Abstract: A chain latch for door comprising a chain which is set hanging between a door and a door-frame and limits the opening of the door for preventing wrongdoers from intrusion. One end of the chain is fixed to the door-frame, while to the other end of the chain is joined a locking member having an elongated slot. A retainer member carrying a hook which is hung with the locking member is fixed to the door, the hook having a neck portion engaging with the elongated slot of the locking member and a head portion formed into T-shape at the end of the neck portion for preventing the elongated slot of the locking member from getting out of the neck portion. When the door is in its closed position, a person on the inside can pass the elongated slot over the head portion for engaging the locking member with the neck portion of the hook or putting the former out of the latter.

Abstract: A door closer comprising a plate-shaped mounting bracket which is fixed to a door and has a pair of elongate tongue-shaped male coupling portions at both edges thereof, and a main body of the door closer which has a pair of elongate groove-shaped female coupling portions at the outer side face thereof, in which the female coupling portions is slidably fitted to the male coupling portions for connecting the main body to the mounting bracket.

Abstract: Counter-sunk seats are formed around preliminary holes in a work piece. Material of the work piece is thereby forced into the preliminary holes, and extruded through the preliminary holes, while other material of the work piece is extruded into a slit, previously formed in the work piece adjacent the preliminary holes, preventing undesirable swelling of the work piece.

Abstract: Sash lock comprising a rotatable latch cam engageable with a keeper, a locking member for unlockably locking the latch cam to control the rotation of the latch cam, and a rotatable knob for shifting the lock member to a locked position or an unlocked position.

Abstract: Sash lock comprising a rotatable latch cam engageable with a keeper, a locking member for unlockably locking the latch cam to control the rotation of the latch cam, and an actuating member for shifting the lock member to a locked position or an unlocked position, wherein said actuating member is rotated by means of a key.