摘要:
A buckle assembly for a chin strap of a helmet has a metal part connected to a non-marring part. The metal part includes a metal plate with an outer perimeter, end portions and a center portion, and a slot in each end portion and a snap member fixed to the center portion. The non-marring part includes a tray with end and side walls. The end and side walls together defining an inner perimeter corresponding to and receiving the outer perimeter of the metal plate. A shelf extends side-to-side on an inner surface of each end wall, a plurality of locking tabs are on an inner surface of each side wall and at least one intermediate portion is connected to the inside surface of each side wall. The metal plate rests on the shelves and on the intermediate portion(s) and is being locked in the tray by the locking tabs.
摘要:
A snap fastener, of the type comprising a female part (2) including a spring (11, 11a, 11b) and a male part (4) including a stem (5) for engagement with the spring, wherein a chamber (10, 10a, 10b) is provided for housing the spring and including shoulders (12, 12a, 12b) on a buttoning side, the shoulders having a length (L1) longer than a length (L2) of shoulders (13, 13a, 13b) arranged on the opposite side. Thus, a differentiated effort buttoning and unbuttoning mechanism between the stem (5) and the spring (11) is achieved. With respect to prior snap fasteners, the inventive snap fastener provides the advantage of requiring very small buttoning efforts, much smaller than those necessary for unbuttoning the snap fastener, thereby facilitating the snap fastener closing operation while providing a tightness closure upon having buttoned the snap fastener male and female parts.
摘要:
The present invention relates to a Cu—Sn—O alloy plating having an oxygen content of 0.3 to 50 at %, a copper content of 20 to 80 at %, and a tin content of 10 to 70 at % in the plating. The present invention provides a copper tin alloy plating that has excellent plating adhesion and disengaging force stability and particularly a Cu—Sn—O alloy plating that has a blackish color tone without containing any controlled substances.
摘要:
In a capped rivet comprising a cap having an exposed upper surface and a lower surface, and a rivet having a rivet shaft extending in a direction away from the lower surface of the cap, a rivet flange extending in a horizontal direction away from an axis of the rivet shaft for fixedly attaching the rivet to the cap, and a pair of support portions disposed between the rivet shaft and the cap, extending substantially parallel to the lower surface of the cap, and formed by making a pair of apertures in the rivet flange and bending two portions of the rivet flange along bending lines respectively extending between the apertures and the rivet shaft, one support portion covers the other support portion by bending in such a manner that a surface of the one support portion that faces away from a lower surface of the cap at least partly contacts a surface of the other support portion that faces toward the lower surface of the cap.
摘要:
A separable fastener assembly for releasably connecting together materials which is adapted to be mounted on material without the need for special tools, sewing or the like. A first fastening element, which may comprise a stud portion, is adapted to releasably mate with a second fastening element which may comprise a keeper arrangement. Each fastening element has a support wall and a peripheral wall which extends transversely from the support wall. Retaining means is provided which is adapted to be moved into engagement with the fastening element to mount the fastening element on the material. The retaining means comprises an opening defined by a peripheral wall which is sized to receive therein the fastening means peripheral wall with the material sandwiched therebetween. The peripheral walls of the fastening element and the retaining means are resilient and have substantially the same normal position when they are in the disengaged or in the engaged position. Projecting mating or cooperating means are provided on the fastening element and the retaining means for displacing the resilient peripheral walls from the normal position as the fastening element and the retaining means are moved to the engaged position and which are engageable with each other when the fastening element and the retaining means are in the engaged position to thereby mount the fastening element on the material.