Coupling assembly for joining two profiled rails

Claim 2

A coupling assembly comprising: a multi-walled first elongated profiled hollow rail having a longitudinal axis, an inner space running along said axis and an opening through at least a first wall of said first rail, said opening extending essentially over the full length of said first rail and giving access to said inner space; a clamping element having a bearing surface and being constructed of a size and shape to allow passage thereof across said opening, said clamping element being formed with a threaded hole; means mounting said clamping element in said inner space for non-rotational but translational movement relative to said axis; means defining a fixed clamping surface in said inner space, said clamping surface and said bearing surface defining therebetween a clamping gap; said first profiled rail having a second wall formed with a hole therethrough facing said threaded hole of said clamping member; a screw extending freely through said second wall hole and screwed into said threaded hole of said clamping member so that rotation of said screw causes said translational movement of said clamping member and variation in the width of said clamping gap; and a second profiled rail having a leg inserted into said clamping gap, whereby rotation of said clamping screw in one direction increases the clamping pressure on said leg to secure said profiled rails together and rotation of said screw in reverse direction loosens said pressure and frees said profiled rails from one another so as to allow relative spatial adjustment of said rails; and wherein said opening is formed at a corner of said first rail defined by imaginary extensions of said first wall and of a third wall of said first rail, and wherein said means defining said clamping surface is an inwardly turned web at the edge of said third wall, said web being parallel with said first wall.

Claim 3

A coupling assembly according to claim 1, wherein said leg of said second profiled rail is formed with a slot running approximately at right angles to said longitudinal axis, said screw and said clamping element passing through said slot.

Claim 4

A coupling assembly comprising: a multi-walled first elongated profiled hollow rail having a longitudinal axis, an inner space running along said axis and an opening through at least a first wall of said first rail, said opening extending essentially over the full length of said first rail and giving access to said inner space; a clamping element having a bearing surface and being constructed of a size and shape to allow passage thereof across said opening, said clamping element being formed with a threaded hole; means mounting said clamping element in said inner space for non-rotational but translational movement relative to said axis; means defining a fixed clamping surface in said inner space, said clamping surface and said bearing surface defining therebetween a clamping gap; said first profiled rail having a second wall formed with a hole therethrough facing said threaded hole of said clamping member; a screw extending freely through said second wall hole and screwed into said threaded hole of said clamping member so that rotation of said screw causes said translational movement of said clamping member and variation in the width of said clamping gap; and a second profiled rail having a leg inserted into said clamping gap, whereby rotation of said clamping screw in one direction increases the clamping pressure on said leg to secure said profiled rails together and rotation of said screw in reverse direction loosens said pressure and frees said profiled rails from one another so as to allow relative spatial adjustment of said rails; and wherein said means defining said clamping surface is a web of said first rail and said clamping element comprises an extension facing said web, said extension passing through a support element and containing said threaded hole.

Claim 5

A coupling assembly comprising: a multi-walled first elongated profiled hollow rail having a longitudinal axis, an inner space running along said axis and an opening through at least a first wall of said first rail, said opening extending essentially over the full length of said first rail and giving access to said inner space; a clamping element having a bearing surface and being constructed of a size and shape to allow passage thereof across said opening, said clamping element being formed with a threaded hole; means mounting said clamping element in said inner space for non-rotational but translational movement relative to said axis; means defining a fixed clamping surface in said inner space, said clamping surface and said bearing surface defining therebetween a clamping gap; said first profiled rail having a second wall formed with a hole therethrough facing said threaded hole of said clamping member; a screw extending freely through said second wall hole and screwed into said threaded hole of said clamping member so that rotation of said screw causes said translational movement of said clamping member and variation in the width of said clamping gap; and a second profiled rail having a leg inserted into said clamping gap, whereby rotation of said clamping screw in one direction increases the clamping pressure on said leg to secure said profiled rails together and rotation of said screw in reverse direction loosens said pressure and frees said profiled rails from one another so as to allow relative spatial adjustment of said rails; and wherein said means defining said clamping surface is a web of said first rail and said clamping element comprises an extension facing said web, said extension passing through a support element and containing said threaded hole.

Claim 6

A coupling assembly comprising: a multi-walled first elongated profiled hollow rail having a longitudinal axis, an inner space running along said axis and an opening through at least a first wall of said first rail, said opening extending essentially over the full length of said first rail and giving access to said inner space; a clamping element having a bearing surface and being constructed of a size and shape to allow passage thereof across said opening, said clamping element being formed with a threaded hole; means mounting said clamping element in said inner space for non-rotational but translational movement relative to said axis; means defining a fixed clamping surface in said inner space, said clamping surface and said bearing surface defining therebetween a clamping gap; said first profiled rail having a second wall formed with a hole therethrough facing said threaded hole of said clamping member; a screw extending freely through said second wall hole and screwed into said threaded hole of said clamping member so that rotation of said screw causes said translational movement of said clamping member and variation in the width of said clamping gap; and a second profiled rail having a leg inserted into said clamping gap, whereby rotation of said clamping screw in one direction increases the clamping pressure on said leg to secure said profiled rails together and rotation of said screw in reverse direction loosens said pressure and frees said profiled rails from one another so as to allow relative spatial adjustment of said rails; said means defining said clamping surface comprising a support element having a threaded hole and an adjusting screw threaded into said threaded hole for fastening of said assembly to a frame section.

Claim 7

A coupling assembly comprising: a multi-walled first elongated profiled hollow rail having a longitudinal axis, an inner space running along said axis and an opening through at least a first wall of said first rail, said opening extending essentially over the full length of said first rail and giving access to said inner space; a clamping element having a bearing surface and being constructed of a size and shape to allow passage thereof across said opening, said clamping element being formed with a threaded hole; means mounting said clamping element in said inner space for non-rotational but translational movement relative to said axis; means defining a fixed clamping surface in said inner space, said clamping surface and said bearing surface defining therebetween a clamping gap; said first profiled rail having a second wall formed with a hole therethrough facing said threaded hole of said clamping member; a screw extending freely through said second wall hole and screwed into said threaded hole of said clamping member so that rotation of said screw causes said translational movement of said clamping member and variation in the width of said clamping gap; and a second profiled rail having a leg inserted into said clamping gap, whereby rotation of said clamping screw in one direction increases the clamping pressure on said leg to secure said profiled rails together and rotation of said screw in reverse direction loosens said pressure and frees said profiled rails from one another so as to allow relative spatial adjustment of said rails; said means defining said clamping surface comprising a support element having a threaded hole and an adjusting screw threaded into said threaded hole for fastening of said assembly to a frame section.

Claim 8

A coupling assembly comprising: a multi-walled first elongated profiled hollow rail having a longitudinal axis, an inner space running along said axis and an opening through at least a first wall of said first rail, said opening extending essentially over the full length of said first rail and giving access to said inner space; a clamping element having a bearing surface and being constructed of a size and shape to allow passage thereof across said opening, said clamping element being formed with a threaded hole; means mounting said clamping element in said inner space for non-rotational but translational movement relative to said axis; means defining a fixed clamping surface in said inner space, said clamping surface and said bearing surface defining therebetween a clamping gap; said first profiled rail having a second wall formed with a hole therethrough facing said threaded hole of said clamping member; a screw extending freely through said wall hole and screwed into said threaded hole of said clamping member so that rotation of said screw causes said translational movement of said clamping member and variation in the width of said clamping gap; and a second profiled rail having a leg inserted into said clamping gap, whereby rotation of said clamping screw in one direction increases the clamping pressure on said leg to secure said profiled rails together and rotation of said screw in reverse direction loosens said pressure and frees said profiled rails from one another so as to allow relative spatial adjustment of said rails; wherein said second profiled rail comprises two adjacent legs which bear against inner and outer surfaces of said first profiled rail, and two webs of said first profiled rail comprise, between the outer and inner surfaces upon which the legs bear, a distance which is substantially equal to that between the corresponding surfaces of the adjacent legs of the second profiled rail.

Claim 9

A coupling assembly comprising: a multi-walled first elongated profiled hollow rail having a longitudinal axis, an inner space running along said axis and an opening through at least a first wall of said first rail, said opening extending essentially over the full length of said first rail and giving access to said inner space; a clamping element having a bearing surface and being constructed of a size and shape to allow passage thereof across said opening, said clamping element being formed with a threaded hole; means mounting said clamping element in said inner space for non-rotational but translational movement relative to said axis; means defining a fixed clamping surface in said inner space, said clamping surface and said bearing surface defining therebetween a clamping gap; said first profiled rail having a second wall formed with a hole therethrough facing said threaded hole of said clamping member; a screw extending freely through said wall hole and screwed into said threaded hole of said clamping member so that rotation of said screw causes said translational movement of said clamping member and variation in the width of said clamping gap; and a second profiled rail having a leg inserted into said clamping gap, whereby rotation of said clamping screw in one direction increases the clamping pressure on said leg to secure said profiled rails together and rotation of said screw in reverse direction loosens said pressure and frees said profiled rails from one another so as to allow relative spatial adjustment of said rails; wherein said second profiled rail comprises two adjacent legs which bear against inner and outer surfaces of said first profiled rail, and two webs of said first profiled rail comprise, between the outer and inner surfaces upon which the legs bear, a distance which is substantially equal to that between the corresponding surfaces of the adjacent legs of the second profiled rail.

Claim 10

A coupling assembly comprising: a multi-walled first elongated profiled hollow rail having a longitudinal axis, an inner space running along said axis and an opening through at least a first wall of said first rail, said opening extending essentially over the full length of said first rail and giving access to said inner space; a clamping element having a bearing surface and being constructed of a size and shape to allow passage thereof across said opening, said clamping element being formed with a threaded hole; means mounting said clamping element in said inner space for non-rotational but translational movement relative to said axis; means defining a fixed clamping surface in said inner space, said clamping surface and said bearing surface defining therebetween a clamping gap; said first profiled rail having a second wall formed with a hole therethrough facing said threaded hole of said clamping member; a screw extending freely through said second wall hole and screwed into said threaded hole of said clamping member so that rotation of said screw causes said translational movement of said clamping member and variation in the width of said clamping gap; and a second profiled rail having a leg inserted into said clamping gap, whereby rotation of said clamping screw in one direction increases the clamping pressure on said leg to secure said profiled rails together and rotation of said screw in reverse direction loosens said pressure and frees said profiled rails from one another so as to allow relative spatial adjustment of said rails; said clamping element mounting means comprising a support element and means for non-rotatably mounting said support element in said space, said support having a through bore of non-circular cross-section and said clamping element having an extension of like non-circular cross-section, said extension being provided with said threaded hole and wherein said clamping surface is formed by said support element.

Claim 11

A coupling assembly comprising: a multi-walled first elongated profiled hollow rail having a longitudinal axis, an inner space running along said axis and an opening through at least a first wall of said first rail, said opening extending essentially over the full length of said first rail and giving access to said inner space; a clamping element having a bearing surface and being constructed of a size and shape to allow passage thereof across said opening, said clamping element being formed with a threaded hole; means mounting said clamping element in said inner space for non-rotational but translational movement relative to said axis; means defining a fixed clamping surface in said inner space, said clamping surface and said bearing surface defining therebetween a clamping gap; said first profiled rail having a second wall formed with a hole therethrough facing said threaded hole of said clamping member; a screw extending freely through said second wall hole and screwed into said threaded hole of said clamping member so that rotation of said screw causes said translational movement of said clamping member and variation in the width of said clamping gap; and a second profiled rail having a leg inserted into said clamping gap, whereby rotation of said clamping screw in one direction increases the clamping pressure on said leg to secure said profiled rails together and rotation of said screw in reverse direction loosens said pressure and frees said profiled rails from one another so as to allow relative spatial adjustment of said rails; said clamping element mounting means comprising a support element and means for non-rotatably mounting said support element in said space, said support having a through bore of non-circular cross-section and said clamping element having an extension of like non-circular cross-section, said extension being provided with said threaded hole and wherein said clamping surface is formed by said support element.

Claim 12

A coupling assembly according to claim 6, wherein said support element comprises a transverse hole through which a mounting screw may be passed.