Abstract: A bed frame is provided with a base plate. The base plate has a fixed base plate portion secured to the bed frame, a hip plate portion and a back plate portion sequentially and rotatively connected to an end of said fixed base plate portion and a first leg plate portion and a second leg plate portion sequentially and rotatively connected to another end. The back plate portion is arranged to be raised by a back elevating mechanism. When the back plate portion has been raised, the hip plate portion is moved in synchronization with the rotation in the raising direction. At this time, since the back plate portion is raised to make an angle larger than that of the hip plate portion, the hip of a user is not held between the fixed base plate portion and the back plate portion.

Abstract: A guide unit (4) is held by a holding unit (1) in a predetermined state and has a guide section (4e). A travelling unit (21a, 21b) is so mounted on the guide section (4e) as to be freely run. The travelling unit (21a, 21b) is driven, by a drive unit (10), in reciprocatory motion along the guide section (4e). Roller supports (35) are mounted on the travelling unit (21a, 21b) and massage rollers (53) are mounted on the roller support (35) such that their rotation center lies in a direction intersecting with a run direction of the travelling unit (21a, 21b). At least one of the roller support (35) and massage roller (53) is rotatably mounted on the travelling unit (21a, 21b).

Abstract: A cushion unit is provided which is elastically compression-deformable on load. A case is stacked on the upper surface of the cushion unit. The case has an upper surface and lower surface with a receiving section open relative to the upper surface. A water bag is formed of a flexible water-proof sheet and containing a liquid. The stacked cushion unit and case are covered with an outer layer unit.

Abstract: A combination chair including a plurality of chairs which can be separately used or can be combined together as one to be used. Each of the plurality of chairs comprises a seat portion supported by legs and a backrest provided on the seat portion. These chairs are designed so that the backrests thereof are jointed to be adjacent to each other at one side in the width direction when the seat portions of the chairs are stacked up in the up-and-down direction, and the lengths of the legs are set so that the lower ends thereof coincide when the chairs are combined together.

Abstract: A bed apparatus is provided which has a support frame, a rotation frame and a bed plate structure. The rotation frame has a one-end side and other-end side supported in a width direction so that one of these end sides each serving as a fulcrum is rotatable in a direction in which an opposite-end side of the rotation frame is raised. A link mechanism is connected to the rotation frame and driven by a drive source. The bed plate structure comprises a middle bed plate assembly and a pair of side bed plate assemblies connected to the middle bed plate assembly such that these side bed plate assemblies can be rotated in the raised direction only. With the rotation frame rotated, one of these side bed plate assemblies which is situated on a lower side in the rotation direction is abutted against the support frame to allow the bed plate structure to be bent upwardly.

Abstract: A watermattress apparatus has a cushion body which is elastically compressed when a load has been exerted thereon. A case is laminated on the upper surface of the cushion body. The case has upper and lower surfaces and a receiving portion opening to the upper surface. A water bag formed of a flexible waterproof sheet and containing a liquid therein is received in the receiving portion. An envelope covers the laminated cushion body and case.

Abstract: A pad is arranged on the upper and lower sides of a spring unit to provide a laminate structure. The laminate structure is covered with an outer cover body comprising top and bottom layers covering the corresponding pads and a side layer covering the laminate structure. A joining member of heat-shrinkable synthetic resin has one end width portion joined to the inner surfaces of the whole marginal edge portions of the top and bottom layers. The other end width portion of the joining member covers the corresponding outer marginal edge portions of the pads. The joining member, upon being heat shrunk, have another end width portion brought into firm engagement with the spring unit so that the pads and outer cover body are firmly held relative to the spring unit.

Abstract: A bedstead mounted on a bedframe is divided into a plurality of separation pieces. The separation pieces are set swingable on the bedframe. A drive shaft is provided on the bedframe. The drive shaft is rotationally; driven by a driver. The rotational motion of the drive shaft is converted by a power transmitting device to an up and down motion whereby the separation pieces are so driven as to be swingable over the bedframe.

Abstract: This invention is to provide capable of easily and properly changing a height in several steps with a simple structure, includes a support link 20 and a reception link 28 in which a slider 43 is slidably housed. The support link 20 and reception link 28 are pivotally disposed in a base 1. An engaging pin 22 is formed on the support link 20. A guide portion 39 having a plurality of engaging portions 40 formed at predetermined intervals along the longitudinal direction is formed in the reception link 28. The engaging pin 22 is slidably inserted into the guide portion 39. when the reception link 28 is pivoted, the slider 43 inhibits or allows the engaging pin 22 to engage with the engaging portion 40 in accordance with the pivot direction of the reception link 28.

Abstract: A carrier holding massage rollers is provided on an upper surface of a base plate so that the carrier can run on the upper surface of the base plate. A vibration transmission plate made of a material capable of transmitting vibration is provided on the base plate. The vibration transmission plate is provided with a vibration generator. Thus, when the vibration generator is actuated, the vibration transmission plate vibrates to massage a person lying on his/her back over the base plate.

Abstract: An apparatus for manufacturing a spring unit used for mattresses and the like is provided with a first unit for forming coiled springs sequentially out of a single wire and shaping the spring wires by arranging these coiled springs in a lateral row so that side limbs of the coiled springs are adjacent to each other, and a second unit extending across the spring wires and adapted to shape helical wires wound around the side arms of the spring wires so that the helical wires extend across the side limbs. The second unit is provided with a helical wire shaping device which includes a feeding mechanism and another mechanism for forming the straight wire fed from the feeding mechanism into the helical wires and a third mechanism for adjusting a pitch of the helical wires. The second unit is also provided with a device for supplying the helical wires while measuring and controlling the length of the helical wires in such a manner that this length substantially agrees with the width of the spring wires.

Abstract: Disclosed is an apparatus for selecting a mattress. The amounts of elastic deformation in a plurality of points of a measuring mattress having a predetermined hardness are electrically detected by pressure sensors. Based on the electric signals generated from the pressure sensors, a first average value in the amounts of deformation in the head portion and the leg portion of the user and a second average value in the amounts of deformation in the other portions of the user are calculated in a control device. First and second straight lines denoting these first and second average values, respectively, are displayed on a display device together with a mark designating the hardness of a mattress adapted to the user. The optimum hardness of the mattress is determined on the basis of the difference in the amount of deformation between the first and second straight lines, so as to enable the user to select a mattress of a hardness adapted to the user.

Abstract: In an apparatus for manufacturing springs, a frame body has guide rails on which a pair of movable bodies are mounted to be movable. Each of the movable bodies has rotatable holding rollers between which a wire which is to be processed is held, and each body also has a shaping roller for bending the end of the wire in a coil. Arranged between the shaping roller and the holding rollers are a guide member for defining the supply passage for the wire, and a pitch rod for determining the pitch of the coil formed. When the holding rollers are rotated, while holding the wire, the movable bodies are moved toward each other by the pulling force exerted to the wire, and the wire is supplied from between the paired holding rollers to the shaping roller through the guide member. The pitch rod is reciprocated as the movable bodies run, and as one turn of the wire coil strikes against the pitch rod, making it possible to form spiral springs at both ends of the wire.

Abstract: A plurality of main springs and a plurality of intermediate support springs are arranged on a rectangular base plate. Each main spring is made of a single steel wire and consists of two coil portions and a straight rod portion connecting these two coil portions. The rod portions of the main springs are arranged at right angles, thus forming a lattice. One end of each coil portion is fastened to a frame. The other end of each coil portion is fastened to the base plate. Each coil portion is shaped like a cone, an inverted cone, a hourglass or a barrel.

Abstract: A massage apparatus is provided with a pair of foldable guide rails extending parallel to each other. Carriers having massage rollers thereon are set on the guide rails so as to be able to reciprocate along the guide rails. The carriers are coupled to belts which travel along the guide rails in a reciprocating manner.