Dismountable structure

Claim 2

A dismountable structure comprising a first structural part including a tubular female member having a pair of diametrically opposed first holes therein and a second structural part including a tubular male member having two pairs of diametrically opposed second holes therein, said second holes being disposed in a common radial plane with the holes in each pair of second holes being circumferentially spaced from the holes in the other pair of second holes, said members being dimensioned and configured so that said male member is alternatively receivable in said female member in a first locked position wherein one of said pairs of second holes is aligned with said first holes and a second locked position wherein the other pair of said second holes is aligned with said first holes, fastening means in said male member for alternatively securing said male and female members in said first or second locked positions, said fastening means comprising a resilient carrier having two pairs of diametrically opposed locking elements, said locking elements being resiliently, inwardly displaceable and being aligned with and received in said second holes, one pair of said locking elements extending into said first holes when said members are received in said first locked position but being resiliently displaced to a position wherein they resiliently engage the inner surface of said female member when said members are in said second locked position, the other pair of said locking elements engaging the inner surface of said female member when said members are received in said first locked position but extending into said first holes when said members are received in said second locked position.

Claim 3

In the dismountable structure of claim 1, said carrier comprising a substantially square-shaped frame including four connected, resiliently, radially deflectable frame sides, one of said locking elements being mounted on each of said frame sides.

Claim 4

In the dismountable structure of claim 1, said locking elements being disposed in a common radial plane.

Claim 5

In the dismountable structure of claim 1, each of said locking elements having a first surface which is oblique to said radial plane and a second surface which is substantially perpendicular to said radial plane, said oblique surfaces facing generally outwardly and toward the proximal end of said male tubular member, whereby said locking elements are automatically displaced inwardly as said male member is inserted into said female member but one pair of said locking elements must be depressed to remove them from said first holes in order to disengage said male member from said female member.

Claim 6

In the dismountable structure of claim 1, at least one of said locking elements comprising a stop for limiting the penetration thereof into the respective second hole aligned therewith.

Claim 7

In the dismountable structure of claim 1, said male tubular member and said female tubular member being of substantially circular cross section.

Claim 8

The dismountable structure of claim 1 further comprising means for limiting the maximum insertion of said male member into said female member.

Claim 9

In the dismountable structure of claim 1, at least one of said male and female members having a plurality of recesses therein to reduce the thickness thereof and increase the resiliency thereof.

Claim 10

In the dismountable structure of claim 1, one of said structural parts comprising a tubular sleeve, the respective male or female tubular member of said one of said structural parts extending at a substantially right angle to said tubular sleeve.

Claim 11

In the dismountable structure of claim 1, said carrier being of ring-shaped configuration.

Claim 12

In the dismounable structure of claim 1, said carrier comprising a ring-shaped element and a plurality of arms extending from said ring-shaped element, said locking elements being disposed on said arms.

Claim 13

In combination, a dismountable structure comprising a first strucural part including a tubular female member and a second structural part including a tubular male member, one of said members having one pair of transversely extending diametrically opposed first holes therein, the other pair of said members having two pairs of transversely extending diametrically opposed second holes therein, said second holes being disposed in a common radial plane with the holes in each pair of second holes being circumferentially spaced from the holes of the other pair of second holes, said members being dimensioned and configured so that said male member is alternatively in said female member in a first locked position wherein one of said pairs of second holes is aligned with said pair of first holes and a second locked position wherein the other pair of said second holes is aligned with said pair of first holes, fastening means in said male member for alternatively securing said male and female members in said first and second locked positions, said fastening means comprising a resilient carrier having a plurality of locking elements on said carrier, one of said locking elements being received in each of said holes in said male member, said locking elements being resiliently inwardly displaceable and being aligned with and received in both said first holes and the respective pair of second holes aligned therewith in each of said first and second locked positions, and a tool for disengaging said fastening elements from said female member, said tool comprising a pair of diametrically opposed pins which are simultaneously engageable with the locking elements received in the aligned holes in said male and female members for depressing said fastening elements inwardly to disengage them from said female member.

Claim 14

In combination, a dismountable structure comprising a first strucural part including a tubular female member and a second structural part including a tubular male member, one of said members having one pair of transversely extending diametrically opposed first holes therein, the other pair of said members having two pairs of transversely extending diametrically opposed second holes therein, said second holes being disposed in a common radial plane with the holes in each pair of second holes being circumferentially spaced from the holes of the other pair of second holes, said members being dimensioned and configured so that said male member is alternatively in said female member in a first locked position wherein one of said pairs of second holes is aligned with said pair of first holes and a second locked position wherein the other pair of said second holes is aligned with said pair of first holes, fastening means in said male member for alternatively securing said male and female members in said first and second locked positions, said fastening means comprising a resilient carrier having a plurality of locking elements on said carrier, one of said locking elements being received in each of said holes in said male member, said locking elements being resiliently inwardly displaceable and being aligned with and received in both said first holes and the respective pair of second holes aligned therewith in each of said first and second locked positions, and a tool for disengaging said fastening elements from said female member, said tool comprising a pair of diametrically opposed pins which are simultaneously engageable with the locking elements received in the aligned holes in said male and female members for depressing said fastening elements inwardly to disengage them from said female member.

Claim 15

In the combination of claim 12, said tool further comprising a resiliently openable jaw, said pins being mounted on said jaw and being movable therewith for inserting said pins into the aligned holes in said female member.

Claim 16

In the combination of claim 12, said first holes being disposed in said female member, said second holes being disposed in said male member, said fastening means comprising four of said fastening elements, one pair of said fastening elements engaging the inner surface of said female member in each of said first and second locked positions.

Claim 17

In the combination of claim 12, said carrier comprising a substantially square-shaped frame including four connected resiliently, radially deflectable frame sides, one of said locking elements being mounted on each of said frame sides.