Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Threaded fastener locked to a discreet structure – Prefabricated assembly comprising strip or sheet member...
Patent
1987-03-04
1988-07-19
Wilson, Neill R.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Threaded fastener locked to a discreet structure
Prefabricated assembly comprising strip or sheet member...
411112, 411970, F16B 2700
Patent
active
047581247
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to an arrangement relating to a nut for location in an open channel section as recited in the preamble of claim 1.
Previously known nuts of this type are, before the screwing in of the bolt, binder or the like, held in the channel section by means of helical springs on the top or sides of the nut. Such nuts are difficult to remove from the channel section once they have been brought in place and, in addition, are difficult to displace in the channel section, for instance for adjustment to the desired bolt position. During poor lighting conditions, as the situation often will be when the channel section is used for ceiling attachment, it may be difficult to see the nut in the channel section, with difficulties resulting when the bolt or the like is to be screwed in place.
The object of the present invention is to provide an arrangement of said type, which does not suffer from the above deficiencies and drawbacks, and which at the same time is simple both to use and to manufacture.
This is obtained according to the invention by the arrangement being provided with the features recited in the characterizing clause of claim 1. Further advantageous features of the invention are recited in the dependent claims.
The design of the nut according to the invention with a gripping means permits very simple insertion of the nut in the channel section. The clamping device of the gripping means holds the nut in place, both before and while the bolt or the like is being screwed in. Furthermore, the clamping device permits relocation of the nut in the channel section in a simple manner without the use of tools or other aids and, besides, the clamping device will provide a feelable indication of the location of the nut during poor lighting conditions. Furthermore, the gripping means permits removing the nut from the channel section in case this should be desirable.
For better understanding of the invention it will be described more closely with reference to the exemplifying embodiments shown in the appended drawings.
FIG. 1 shows isometrically a portion of a channel section during the insertion of a nut according to the invention.
FIG. 2 shows the parts in FIG. 1 after the insertion of the nut.
FIG. 3 shows the parts in FIG. 2 seen in the direction of the channel section.
FIG. 4-7 show further embodiments of the nut according to the invention.
In FIG. 1 a portion of a channel section 1 is shown, having a generally circular cross section and a longitudinal opening 2 having limiting edges 3 and 4. The limiting edges are bent outwards in opposite directions so as to form longitudinal flanges. The further details of such a channel section and its advantageous fields of application are mentioned i.a. in U.S. Pat. No. 4,389,830, which is hereby incorporated as reference.
FIG. 1 further shows a nut 5 according to the invention, in this case comprising a rectangular main body 6 provided with a threaded hole 7 and a gripping means generally designated 8. The gripping means is comprised by a bent metal wire and has at its one end a clamping device 9, generally in the form of a U-shaped loop. One leg of the loop 9 is connected to the main body 6 of the nut by means of a portion 10 of the metal wire extending generally perpendicular to the axis 11 of the threaded hole 7 of the nut.
When the nut according to the invention is to be brought in place in the channel section 1, the loop or the clamping device 9 of the gripping means 8 is grasped and the main body 6 of the nut is introduced sideways through the opening 2 to the position shown in FIG. 1, the thickness of the main body being slightly less than the width of the opening 2. Next the loop 9 is subjected to a torque about an axis parallel to the axis 11 of the hole 7, so that the connecting portion 10 is bent resiliently and the main body 6 of the nut is pushed down to longitudinal contact with the bottom of the channel scction. Thereupon the loop 9 is subjected to yet another torque, but this time with the connecting portion 10 as the axis, so that the
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patent: 4021129 (1977-05-01), Sykes
patent: 4146074 (1979-03-01), Kowalski
patent: 4263952 (1981-04-01), Kowalski
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