Abstract: A joining member includes a first support portion supporting a first pole member in the longitudinal direction at the bottom surface, a second support portion supporting a second pole member in the longitudinal direction at the bottom surface, a first contact portion located on one side of the first support portion along the longitudinal direction of the first pole member and contacting the first pole member at the side surface, and a second contact portion located on one or the other side of the second support portion along the longitudinal direction of the second pole member and contacting the second pole member at the side surface. The first support portion and/or the first contact portion has a through portion in the bottom surface or the side surface. The second support portion and/or the second contact portion has a through portion in the bottom surface or the side surface.

Abstract: According to one embodiment, an assembly ball includes a plurality of strips having a circumferential length. The strips are assembled convexly outward as viewed in the radial direction so as to substantially form a sphere as a whole. The strips each overlap other strips at their respective strip overlapping portions where the strips intersect with one another. The strip overlapping portions are joined by a strip joining member.

Abstract: The bushing includes an outer cylinder, an inner cylinder, and an elastic body therebetween. The outer cylinder has a central recess portion formed in a curved shape. The inner cylinder has a central convex portion being formed in a curved shape. A distance between a vertex of the central recess portion and the vertex of the central convex portion is smaller than a distance between a point other than the vertex of the central recess portion and a point at which a straight line extending from the point other than the vertex of the central recess portion to an intersection point of the perpendicular line and the axis of the inner cylinder intersects the central convex portion.

Abstract: The bushing includes an outer cylinder, an inner cylinder, and an elastic body therebetween. The outer cylinder has a central recess portion recessed from the inner peripheral surface in the radial direction at the central portion in the axial direction, and the thickness of both end portions is thicker than the thickness of the central portion. The central recess portion is formed in a curved shape or having a curved and a straight shape. The inner cylinder has a central convex portion swelling from the outer peripheral surface in the radial direction at a position corresponding to the central recess portion. The maximum outer diameter of the central convex portion is larger than the minimum inner diameter of the inner peripheral surface of the outer cylinder.

Abstract: The ball of the present invention is characterized by including at least one skin layer having water absorbability. The at least one skin layer may be formed of a water absorbent material, or may be formed so as to include a surface portion and a water absorbent outer skin adhered to at least a part of the surface portion. According to the ball of the present invention, a ball for competitions that can easily maintain water absorbency is provided while remaining durable even when used for a long time and not requiring man-hours during the manufacturing process.

Abstract: A ball body is covered by a plurality of skin members formed integrally of a soft material comprised of resin or rubber as a shaped structure having a front wall portion, a circumferential wall portion and a recess portion altogether. In the recess portion, between the ball body and each skin member, there is formed a hollow portion surrounded by the ball body and the respective skin member and separating the ball body and the front wall portion from each other. As a cushion portion and an air present portion are coexistent in each hollow portion, when a person grips a ball, the cushion portion is collapsed to increase the area of contact between the outer face of the ball and the pulp(s) of the finger(s), thus facilitating the person's gripping of the ball. The readily grippable state of the ball can be maintained for a long period of time.

Abstract: [Problem] To make a ball easy to be grabbed. [Solution] In a skin body 3 which covers a ball main body 2, a skin part 2 and a circumferential wall part 3 protruding from a peripheral edge part of the skin part 2 to a back side are integrally formed by molding of injecting a soft material made of resin or rubber into a mold. Alternatively, a structure is such that a step part or flat surface part where a finger is hung is provided on a front surface of the ball main body 2 or a front surface of the skin body 3 which covers the ball main body 2. Alternatively, a front surface of one of adjacent skin bodies 3 and a front surface of the other thereof configure a step part in a radial direction of a ball 1.

Abstract: [Problem] To make a ball easy to be grabbed. [Solution] In a skin body 3 which covers a ball main body 2, a skin part 2 and a circumferential wall part 3 protruding from a peripheral edge part of the skin part 2 to a back side are integrally formed by molding of injecting a soft material made of resin or rubber into a mold. Alternatively, a structure is such that a step part or flat surface part where a finger is hung is provided on a front surface of the ball main body 2 or a front surface of the skin body 3 which covers the ball main body 2. Alternatively, a front surface of one of adjacent skin bodies 3 and a front surface of the other thereof configure a step part in a radial direction of a ball 1.

Abstract: A ball includes a ball body having a spherical surface, and at least one projection extending from the surface of the ball body. The projection extends in such a manner that the projection forcibly separates a laminar boundary layer generated on the surface of the ball body, and transitions the laminar boundary layer to a turbulent boundary layer.

Abstract: A method of manufacturing a multi-layer outer panel for a game ball includes three-dimensionally forming a top layer of an outer panel, as well as one or more backing materials disposed underneath the top layer, into a shape substantially corresponding to the surface of the ball. Multi-layer outer panels are then attached to or interconnected to surround an inflatable bladder, thereby producing a game ball while minimizing overstretching of the outer material or the backing material and improving resistance of the outer panels to delamination.

Abstract: A producing method of ball for ball game including a ball cover and a bladder is disclosed. The method includes steps of (a) inflating a bladder and providing a web layer by coating at least a thread on an outer surface of the bladder thereafter, (b) fabricating a plurality of panels in a predetermined shape, (c) sewing the plurality of panels edge to edge together excluding a portion thereof by a sewing machine to form a ball cover including an inlet opening, (d) inserting the bladder obtained at step (a) into the ball cover obtained at step (c) through the inlet opening, (e) sewing the inlet opening of the ball cover, and (j) inflating the ball for ball game to a predetermined pressure within a shaping mold.

Abstract: In an air mattress (1) including a plurality of levels of air mattress layers (5, 7) which are vertically stacked, in each of the levels of air mattress layers (5, 7), flexible hollow air cells (43, 23) each extending along the width of the air mattress (1) are arranged in parallel with each other in the longitudinal direction of the air mattress (1), air cells (43, 23) in each of the upper air mattress layer (7) and the lower air mattress layer (5) are divided into a plurality of groups such that the air cells (43, 23) are expanded or contracted in units of the groups by supplying or discharging air to/from these air cells (43, 23).

Abstract: An object holding apparatus for holding an object, a portion of which is supposed to be surface treated, the object holding apparatus including: a body to which the object is fixed; a mask for covering a non-treatment portion of the object; and a magnetic fixing member for bringing the mask into close contact with the object by magnetic force. The body includes an engagement member for engaging with the object, thereby positioning the object.

Abstract: A method of manufacturing a multi-layer outer panel for a game ball includes three-dimensionally forming a top layer of an outer panel, as well as one or more backing materials disposed underneath the top layer, into a shape substantially corresponding to the surface of the ball. Multi-layer outer panels are then attached to or interconnected to surround an inflatable bladder, thereby producing a game ball while minimizing overstretching of the outer material or the backing material and improving resistance of the outer panels to delamination.

Abstract: The ball for a ball game of the invention includes a fabric layer 1 having a spherical 12-hedron where twelve right pentagonal fabric pieces 2 are sewn together. The marginal edges of the fabric piece being folded by 90 degrees, and the marginal edges are sewn together with a sewing machine. The fabric layer is then reversed through cross-like slits 5a, 5b formed in the fabric layer in a location opposite to a valve opening 5 (also formed in the fabric layer) in such a manner that the marginal edges are located on an inner side of the fabric layer. After the bladder is accommodated within the fabric layer through the closure hole 5, the hole 5 is closed by a patch. Onto a surface of the fabric layer, there is adhered the panels. Thereby, the ball for a ball game having no unevenness and soft feeling is attained.

Abstract: A ball includes a ball body having a spherical surface, and at least one projection extending from the surface of the ball body. The projection extends in such a manner that the projection forcibly separates a laminar boundary layer generated on the surface of the ball body, and transitions the laminar boundary layer to a turbulent boundary layer.

Abstract: The present invention provides a ball for ball games which has equivalent or increased cushioning properties when compared conventional balls. The ball for ball games of the present invention includes a bladder made of rubber or elastomer, and a foamed layer covering the outside of the bladder, in which a skin layer is provided on each surface sectionalized by partition portions extending from the surface of the foamed layer, the partitions having a lesser degree of expansion than the main portion of the surface which is sectionalized by the portions.

Abstract: The bed is equipped with a back lift mechanism and comprises a thigh support mechanism for supporting only the thighs of a user. The bed further comprises cooperative means for performing a thigh lifting action of said the thigh support mechanism in cooperation with the back lift mechanism in back lifting action. The thigh support mechanism has a thigh support member, which has one end, proximal to the waist section of the bed, pivotally mounted on the bed frame to support only the thighs. The thigh support member has a width smaller than that of the bed frame and is provided only at the central region of the width of the bed frame.

Abstract: An objective of the invention is to provide an integral air mattress capable of preventing caving-in. To achieve the above objective, the present invention provides an air mattress consisting of three sheets 1 to 3 stacked and airtightly sealed at their circumferential portions, the mattress comprising: first-layer air cells 6a and 6b consisting of tubular air cells formed widthwise by the first and second sheets 1 and 2; and second-layer air cells 8 consisting of tubular air cells formed widthwise by the second and third sheets 2 and 3, wherein the first-layer air cells 6a and 6b and the second-layer air cells 8 are arranged so as not to overlap in the longitudinal direction. The overlying first-layer air cells 6a and 6b are set at low pressure so as not to cause bedsores easily, while the underlying second-layer air cells 8 are set at high pressure so as not to cause caving-in easily.