Abstract: A tubing system with a coupler join positioned between and joining tubing segments. The coupler join is formed to reduce dead legs and hold up volumes within, and/or to reduce materials used to form, and/or to simplify the manufacturing process of the tubing system. The coupler join may be sized, shaped, configured, and/or dimensioned to join tubing segments, such as pre-formed tubing segments, in a streamlined configuration, such as to substantially correspond with the outer and inner diameters of the tubing segments. The tubing system and coupler join may be formed with a mold configured to form a coupler join securely coupling spaced apart ends of tubing segments to be joined together in a configuration which reduces dead legs and hold up volumes within the resulting tubing system.

Abstract: A bicycle helmet has a body with a concave inner surface configured to permit the helmet to fit a user's head. The body has a first section with a first density and a second section with a second density different from the first density. A reinforcement structure is disposed in the body, wherein the reinforcement structure engages the first and second portions of the body.

Abstract: A bicycle helmet has a body with a concave inner surface configured to permit the helmet to fit a user's head. The helmet also includes a reinforcement structure having a plurality of separate frames interconnected with each other, at least one of the plurality of frames comprising a unidirectional filament, wherein the reinforcement structure engages the body.

Abstract: A bicycle helmet having a body, which preferably includes both a base and a reinforcement structure. In one arrangement, the reinforcement structure is an external shell and, in another arrangement, the reinforcement structure is an internal skeletal frame. In some arrangements, the helmet body may include both an external shell and an internal frame. The helmet also includes a retention mechanism defining a contact surface configured to contact a rearward surface of the head of the user. A strap arrangement includes a first strap portion and second strap portion selectively connectable to one another to extend from opposing sides of the body and underneath a chin of the user. Desirably, no portion of the strap arrangement is secured to the retention mechanism. The strap arrangement includes a strap section extending through a pair of spaced openings in a lower, rearward portion of the body such that a portion of the strap section extends across an outer surface of the body between the openings.

Abstract: A bicycle helmet has a body with a concave inner surface configured to permit the helmet to fit a user's head. The body has a first section with a first density and a second section with a second density different from the first density. A reinforcement structure is disposed in the body, wherein the reinforcement structure engages the first and second portions of the body.

Abstract: A bicycle helmet has a body with a concave inner surface configured to permit the helmet to fit a user's head. The helmet also includes a reinforcement structure having a plurality of separate frames interconnected with each other, at least one of the plurality of frames comprising a unidirectional filament, wherein the reinforcement structure engages the body.

Abstract: A bicycle helmet having a body, which preferably includes both a base and a reinforcement structure. In one arrangement, the reinforcement structure is an external shell and, in another arrangement, the reinforcement structure is an internal skeletal frame. In some arrangements, the helmet body may include both an external shell and an internal frame. The helmet also includes a retention mechanism defining a contact surface configured to contact a rearward surface of the head of the user. A strap arrangement includes a first strap portion and second strap portion selectively connectable to one another to extend from opposing sides of the body and underneath a chin of the user. Desirably, no portion of the strap arrangement is secured to the retention mechanism. The strap arrangement includes a strap section extending through a pair of spaced openings in a lower, rearward portion of the body such that a portion of the strap section extends across an outer surface of the body between the openings.

Abstract: A pair of strap adjustment assemblies for a bicycle helmet is provided. A first pair of straps is connected to one side of the helmet and a second pair of straps is connected to the other side of the helmet. A first strap adjustment assembly includes a release lever and a base for engaging the first pair of straps. The lever can be moved from a closed position to an open position. When the lever is in the open position, the user can move the strap adjustment assembly along the first pair of straps to adjust the location of the strap adjustment assembly. When the lever is in the closed position, the first strap adjustment assembly draws together the first pair of straps at a desired location. A second strap adjustment assembly is similar the first strap adjustment assembly and engages the second pair of straps, which are connected to the other side of the helmet.

Abstract: A helmet and method of making the same for allowing repeatably removable attachment of helmet accessories, that includes an inner liner member for substantially covering a wearer's head, and an outer shell member that includes an upper shell surface, a lower shell surface which substantially covers an upper liner surface of the inner liner member, and at least one mounting hole formed therethrough. A grommet is disposed along the upper shell surface and aligned over the mounting hole. A receptacle housing is disposed along the lower shell surface and has a receptacle aligned to and facing the mounting hole. Engagement prongs secure the grommet to the receptacle housing with the shell member therebetween. The helmet accessory has at least one mounting member, such as a protrusion or screw. The receptacle includes a device for removably engaging the mounting member when the mounting member is inserted through the mounting hole in order to removably mount the helmet accessory to the helmet.

Abstract: A helmet and method of making the same for allowing repeatably removable and adjustable attachment of helmet accessories, that includes an inner liner member for substantially covering a wearer's head, and an outer shell member that includes an upper shell surface, a lower shell surface which substantially covers an upper liner surface of the inner liner member, and at least one mounting hole formed therethrough. A grommet with a access hole formed therethrough is attached to the outer shell so that the access hole is aligned with the mounting hole. A helmet accessory has at least one mounting member insertable through the access hole. An engagement member is rotatably attached to the grommet with a predetermined amount of friction therebetween, and has means for removably engaging the helmet accessory mounting member inserted through the access hole for removably mounting the helmet accessory to the helmet.

Abstract: A ceiling insulation structure for an attic which includes a "sheetrock" or "dry wall" ceiling carried by attic ceiling joists in spaced relationship, insulating material provided between the ceiling joists and covering the sheetrock and a water vapor-permeable film or membrane of selected thickness covering the insulating material and the ceiling joists to prevent air from circulating through the insulating material and reducing the efficiency of the insulating material. A method for increasing the efficiency of insulating material in an attic which includes covering the insulating material and the ceiling joists with a water vapor-permeable film or membrane of selected thickness.

Abstract: Insulation configurations for the ceiling, floor and walls of structures, which include in a first embodiment, at least one layer of particulate or "blown" insulation with a water vapor-permeable film or films isolating the layer or layers to limit air circulation and infiltration through the layers. In another embodiment, sheets of a moisture vapor-permeable film membrane are provided in association with insulating "batts" or rolled sheet, fibrous, non-solid insulation to divide the insulation into discrete layers and limit air infiltration through the layers. A method for increasing the efficiency of insulating material in structures, which includes providing one or more moisture or water vapor-permeable membrane films or membranes in association with the insulating material to isolate the insulation in discrete layers and limit air infiltration and circulation through the layers.