Abstract: A buckle comprises a male member including a pair of resiliently flexible legs each having an abutment surface, and a female member having a socket portion releasably couplable with said legs and including a pair of spaced sidewalls defining therebetween a slot for receiving therein said legs, each of the sidewalls having a retaining surface engageable with the abutment surface to interlock the male and female members. The socket portion further has a pair of cantilevered arms disposed inwardly of the sidewalls and resiliently flexible toward and away from the sidewalls. An actuating lug is disposed on a distal end of each arm which is located outside of the slot, the lug being engageable with one of the legs. The arms are resiliently flexible toward each other to cause the actuating lugs to urge the legs to flex resiliently toward each other for bringing the abutment surface and the retaining surface out of engagement with one another.

Abstract: A data cartridge includes snap fasteners which extend between parallel walls of the cartridge and which are bifurcated to produce two parallel spring arms which may be compressed for insertion into a hole provided in one of the walls. The spring arms include enlarged heads, which are adapted to pass through the wall adjacent the hole when the spring arms are compressed, and reduced necks which allow expansion of the spring arms and gripping of the wall by the enlarged heads.

Abstract: A stiff and resilient body is provided including a pair of upstanding arm portions having upper and lower ends. At least the upper ends of the arm portions are upwardly divergent in the static conditions thereof and the lower ends of the arms are joined together by a suspension structure for suspending a selected article therefrom. The upper ends of the arms include integral downwardly and oppositely outwardly inclined catch flanges supported therefrom with each arm upper end and the associated catch flange defining a downwardly opening channel on the outer side of the corresponding arm remote from the other arm upper end. The catch flanges are relatively downwardly divergent and include remote upwardly convergent outer side wedge surfaces for camming the upper ends of the arms toward each other as the clip is upwardly displaced between spaced flanges of a bar joist from therebelow to a level with the lower ends of the catch flanges disposed above the upper marginal edges of the flanges.

Abstract: A guide rail for electronic module supports has at each of the front and rear ends of the guide rail body a latching element for latchable connection with a respective transverse support member, and resilient latching heads or snap-in connector tabs which engage with correspondingly formed apertures in metal strips disposed in the transverse support members. In order to halve the distance between the guide rails to one another as determined by the apertures, there are provided between the latching arms of the latching elements correspondingly shaped separating or divider elements which are selectively insertable in the apertures or on the cross-pieces disposed between the apertures. For the latchable fastening of a connector on the inner rear surface of a rack there is further provided at the rear end of the guide rail body a securing element furnished with a plug.

Abstract: A releasable clasp having a female receiving member and a male insert member, the female receiving member including an elongated internal passageway which extends from one end thereof and has opposed retaining slots therein. The male insert member includes a body portion supporting a pair of forwardly directed, elongated, spaced apart, springy arms which are insertable into the passageway upon compression of the arms together. An enlarged hand portion extends outwardly from the leading end of each arm for releasably locking into a respective one of the retaining slots when the arms spread apart within the passageway. Each of the hand portions terminates at their free ends with an inwardly extending finger directed towards each other. One of the fingers is forward of and overlaps the other finger to define a unitary leading insertion portion, which can include a nose tip, for facilitating insertion of both arms into the passageway.

Abstract: Structure for connecting two members together, each including parallel, spaced apart, oppositely disposed, opposed surfaces having a cross section including a short straight portion adjacent one edge thereof, a longer obliquely extending portion extending from the other edge thereof and merging with an arcuate connecting portion which intersects the shorter straight portion, which surfaces are complementary and arranged to be in engagement with the members assembled. In one modification of the invention, the oblique portion of the surface cross section starts prior to the plane of the short straight line portion of the cross section and crosses it prior to merging with the connecting portion of the cross section.

Abstract: A bracket structure for supporting a horizontal or vertical sheet-like member and adapted for attachment to a supporting apertured panel having a first U-shaped clip with two opposing spaced flat side walls joined by an integral end wall. A stem extends outwardly of the end wall which has a cylindrical slotted neck to define flexible spaced bifurcations. When the bifurcations are pressed together they define a round head which may enter an aperture in the supporting panel.

Abstract: A plastic fastener comprising a head portion to be contacted with a given panel, a leg portion to be inserted through a fitting hole bored in the panel, a plurality of fin-like engaging projections disposed in the stepped manner in the direction of the length on the outer surface of the leg portion is improved so as to be inserted in its correct posture through the fitting hole and brought into fast attachment without any play to the panel. The improvement is accomplished by providing the leg portion with at least two guide ridges having at each terminal edge thereof an engaging ridge.