Abstract: Each spoke portion (50) includes a center valley portion (51), and spoke projecting threads (52) formed on both sides of the center valley portion (51). Each of the spoke projecting threads (52) includes an inclined surface portion (54), which protrudes outward in a spoke widthwise direction from a top (53) and inclines downward to a wheel axially back side. The inclined surface portion (54) is formed so that a length thereof in a range of from the top (53) to an outer end of the inclined surface portion (54) in the spoke widthwise direction becomes larger toward a spoke distal end side, and that an average downward inclination angle thereof becomes smaller toward the spoke distal end side. With this configuration, it is possible to increase rigidity of the spoke portion with good balance while avoiding interference with a braking device.

Abstract: Each spoke portion (50) includes a center valley portion (51), and spoke projecting threads (52) formed on both sides of the center valley portion (51). Each of the spoke projecting threads (52) includes an inclined surface portion (54), which protrudes outward in a spoke widthwise direction from a top (53) and inclines downward to a wheel axially back side. The inclined surface portion (54) is formed so that a length thereof in a range of from the top (53) to an outer end of the inclined surface portion (54) in the spoke widthwise direction becomes larger toward a spoke distal end side, and that an average downward inclination angle thereof becomes smaller toward the spoke distal end side. With this configuration, it is possible to increase rigidity of the spoke portion with good balance while avoiding interference with a braking device.

Abstract: A driver which strikes a fastener to drive it into a target object has a cylinder and a driver blade which is reciprocably housed in the cylinder and is driven to reciprocate by pressure of fluid supplied into the cylinder to strike the fastener, and the driver blade is made up of a shaft part and a piston provided at one end of the shaft part and a damping member is incorporated in the shaft part.

Abstract: The inner surface of a nozzle of a nail driver has a taper in the driving direction near the output nozzle thereof to direct a tip of the nail toward an axis of the nozzle when the tip of the nail contacts with the taper to always drive the nail into a board perpendicularly.

Abstract: The hairdressing cosmetic preparation of the present invention is characterized by comprising a heat-gelling polymer which becomes to gel upon heating. The gelling temperature of the heat-gelling polymer is preferably 60° C. or higher. Preferable heat-gelling polymer is polysaccharides such as &bgr;-1,3-glucan, &bgr;-1,3-xylan, curdlan and the like. The hair dressing preparation of the present invention, due to using such heat-gelling polymer, can give excellent hairdressing effect and hair-setting power when hair applied with the hairdressing preparation is treated with heating.

Abstract: The inner surface of a nozzle of a nail driver has a taper in the driving direction near the output nozzle thereof to direct a tip of the nail toward an axis of the nozzle when the tip of the nail contacts with the taper to always drive the nail into a board perpendicularly.

Abstract: A nose 2 has a recessed portion 4 engageable with the front end of a magazine 3. A through-hole 12 is provided on each side wall of the recessed portion 4 of nose 2. The front end of magazine 3 is formed into a protruding portion 6 just fitting to or coupled into the recessed-portion 4 of nose 2. A through-hole 13 is opened across the protruding portion 6 of magazine 3 so that through-hole 13 meets through-holes 12 opened on the side walls of the recessed portion 4 when the magazine 3 is completely engaged with the nose 2. A pin 16 is inserted into the through-holes 12 and 13 to fix magazine 3 in the recessed portion 4 of nose 2. A resilient member 15 is provided between pin 16 and through-hole 13.

Abstract: A pneumatic nailing machine having a, driving depth controlling mechanism. The pneumatic nailing machine includes a push lever having a lower end in pressure contact with a workpiece and another end in association with a trigger. Vertical moving length of the push lever relative to a nose will change the driving depth. An eccentric body is rotatably supported on the main body. The eccentric body is positioned above the upper tip of the push lever and the upper position of the upper tip of the push lever is regulated by the eccentric body. If the eccentric body is angularly rotated to a first angular position, the push lever can be moved to its highest position for providing a minimum distance between the lower tip of the push lever and a lower tip of the nose to provide the maximum driving depth. If the eccentric body is angularly rotated to a second angular position, the distance between these tips become maximum to provide a minimum driving depth.

Abstract: A driving machine having a cylinder fixing arrangement. The driving machine is used for driving a fastener such as a nail into a workpiece. For this, a cylinder-piston arrangement is provided. When the piston is driven to drive the fastener a reaction force is applied to the cylinder. To avoid displacement of the cylinder due to the reaction force, the cylinder fixing arrangement is provided. The fixing arrangement includes a detachable stop washer secured in an annular groove of the cylinder. The stop washer is partly engaged with a flange of the cylinder to prevent the cylinder from its upward displacement. Inner diametrical differences are provided in the cylinder at the position around the stop washer.

Abstract: A pneumatic fastener driving tool includes a main valve operable to cause compressed air to be alternately introduced into and discharged from the upper piston chamber, a first passage leading the compressed air into the main valve chamber, a repeat valve disposed in the first passage for opening and closing the same, and a second passage extending between the lower piston chamber and a repeat valve chamber in which the repeat valve is reciprocably received. With this construction, the repeat valve is reciprocally movable in response to a change of pressure in the lower piston chamber to cause the main valve to reciprocate, thereby reciprocating the piston repeatedly. Since the reciprocating fastener driving movement of the piston is directly related to the reciprocating movement of the repeat valve, the fastener driving work can be achieved reliably without causing any operational failure such as a non-load striking.

Abstract: An anode system for plasma heating usable in the tundish of a continuous casting apparatus, which is economical and simple in structure and can enjoy a long service life, and comprises a dam member provided on the bottom surface of a tundish near and along a side wall or an over-flow wall of the tundish to form a space or gap therebetween, an electrical conductive member with its end portion exposed to the space or gap and the other end electrically connected to a power source, said dam member having a height higher than a level of molten metal remaining after the pouring of the molten metal from the tundish, but lower than a minimum level of molten metal normally contained in the tundish.

Abstract: A power-driven hand-held fastener driving machine includes a housing including a reciprocally movable blade, a magazine for carrying a strip of fasteners such as staples, and a guide assembly composed of first and second guides defining a drive track therebetween. A safety device is actuatable in response to being pressed against a workpiece for depressing a switch means to move the blade for driving fasteners one at a time into the workpiece. The safety device is composed of first and second separate members, the first member being engageable with the switch means and the second member being angularly movable into and out of engagement with the first member and engageable with the workpiece. When the second member is out of engagement with the first member, the first member will not actuate the switch means to prevent accidental driving of the blade.

Abstract: A horizontal type vibrating compressor having a cylindrical container for accommodating a compressor proper which is disposed horizontally, and closure members for closing both open ends of the cylindrical container; and having such a construction that a piston fixed to a driving coil is caused to vibrate in substantially horizontal direction in a cylinder, wherein coil springs are respectively interposed in the compressed state between each closure member and the compressor proper; cushioning members are fixed via cup-shaped holders to any one side of the compressor proper or the closure members; pin-shaped supporting members, which are adapted to be axially slidable by engaging with the cylindrical portion of the cushioning members are fixed to the other side of the compressor proper or the closure members; and an air/oil intake tube connecting the outside and inside of the compressor proper is provided, the outer end thereof being connected to a fiber braided tube disposed on the lower inside part of the c