Isolator device
Isolator devices to isolate equipment from vibration and/or shock. The isolator devices may include a helical coil with circumferentially distributed bars disposed thereon. The bars may include a first bar that couples to equipment to be isolated from vibration and/or shock, a second bar that couples to a support surface that experiences vibration and/or shock, and intermediary bars. The intermediary bars may be disposed circumferentially between the first and second bars to add increased stiffness to the helical coil.
1 . An isolator device configured to isolate equipment from vibration and shock experienced by a support surface, the isolator device comprising:
a coil comprising a central longitudinal axis;
a first bar and a second bar, the first bar configured to be coupled to the equipment and the second bar configured to be coupled to the support surface such that the isolator device is disposed between the equipment and the support surface in a vertical direction to support a load of the equipment; and
a first intermediary bar and a second intermediary bar, wherein widths of the first intermediary bar and the second intermediary bar are smaller than widths of the first bar and the second bar;
wherein each of the first bar, the second bar, the first intermediary bar, and the second intermediary bar are coupled to the coil and parallel to the central longitudinal axis;
wherein each of the first intermediary bar and the second intermediary bar are circumferentially disposed between the first bar and the second bar about the central longitudinal axis;
wherein the first intermediary bar and the second intermediary bar each comprise a length that is less than lengths of the first bar and the second bar; and
wherein the first intermediary bar and the second intermediary bar are positioned at one of two ends of the isolator device and extend to terminate between the two ends of the isolator device.
2 . The isolator device of claim 1 , wherein the first bar and the second bar are disposed one hundred and eighty degrees apart from each other about the central longitudinal axis.
3 . The isolator device of claim 1 , wherein the first intermediary bar and the second intermediary bar are disposed one hundred and eighty degrees apart from each other about the central longitudinal axis.
4 . The isolator device of claim 1 , wherein the first bar, the second bar, the first intermediary bar, and the second intermediary bar are circumferentially distributed around the central longitudinal axis.
5 . The isolator device of claim 1 , wherein the first bar, the second bar, the first intermediary bar, and the second intermediary bar are circumferentially distributed about the central longitudinal axis at ninety degree intervals.
6 . The isolator device of claim 1 , wherein the first intermediary bar and the second intermediary bar each comprise holes through which turns of the coil pass through.
7 . The isolator device of claim 1 , wherein the first intermediary bar and the second intermediary bar are clamped around the coil.
8 . The isolator device of claim 1 , wherein the first bar and the second bar each comprise a first portion and a second portion, the first portion disposed outside the coil and the second portion disposed inside the coil.
9 . The isolator device of claim 8 , wherein the first portion and the second portion each comprise corresponding channels, the corresponding channels of the first portion and the second portion cooperating to form a hole through which a turn of the coil may pass.
10 . The isolator device of claim 1 , wherein the first intermediary bar and the second intermediary bar each comprise a first portion and a second portion, the first portion disposed outside the coil and the second portion disposed inside the coil.
11 . The isolator device of claim 10 , wherein the first portion and the second portion each comprise corresponding channels, the corresponding channels of the first portion and the second portion cooperating to form a hole through which a turn of the coil may pass.
12 . The isolator device of claim 10 , wherein the first portion and the second portion are coupled together with a plurality of screws.
13 . The isolator device of claim 1 , wherein the coil is a helical coil.
14 . The isolator device of claim 1 , wherein the coil comprises a wire rope.
15 . An isolator device configured to isolate equipment from vibration and shock, the isolator device comprising:
a helical coil comprising a wire rope disposed around a central longitudinal axis;
a first bar and a second bar, the first bar configured to support equipment and the second bar configured to be coupled to a support surface such that the isolator device is disposed between the equipment and the support surface in a vertical direction; and
a first intermediary bar and a second intermediary bar, wherein each of the first intermediary bar and the second intermediary bar comprise holes through which the helical coil passes, wherein at least some of the holes are oriented at angles other than perpendicular relative to the central longitudinal axis;
wherein each of the first bar, the second bar, the first intermediary bar, and the second intermediary bar comprise first portions outside the helical coil and second portions inside the helical coil coupled together to clamp onto the helical coil;
wherein the first bar, the second bar, the first intermediary bar, and the second intermediary bar are circumferentially distributed about the central longitudinal axis with the first intermediary bar and the second intermediary bar disposed between the first bar and the second bar;
wherein the first intermediary bar and the second intermediary bar each comprise a length that is less than lengths of the first bar and the second bar; and
wherein the first intermediary bar and the second intermediary bar are positioned at one of two ends of the isolator device and extend to terminate between the two ends of the isolator device.
16 . The isolator device of claim 15 , wherein longitudinal axes of the first bar, the second bar, the first intermediary bar, and the second intermediary bar are parallel to the central longitudinal axis.
17 . The isolator device of claim 15 , wherein the first bar, the second bar, the first intermediary bar, and the second intermediary bar are circumferentially distributed about the central longitudinal axis at ninety degree intervals with the first intermediary bar disposed between the first bar and the second bar and the second intermediary bar disposed between the first bar and the second bar.
18 . An isolator device configured to isolate equipment from vibration and shock, the isolator device comprising:
a helical coil comprising a wire rope disposed around a central longitudinal axis;
a first bar and a second bar, the first bar configured to be coupled to equipment and the second bar configured to be coupled to a support surface such that the isolator device is disposed between the equipment and the support surface in a vertical direction; and
a first intermediary bar and a second intermediary bar, wherein widths of the first intermediary bar and the second intermediary bar are smaller than widths of the first bar and the second bar;
wherein each of the first bar, the second bar, the first intermediary bar, and the second intermediary bar comprise first portions outside the helical coil and second portions inside the helical coil coupled together to clamp onto the helical coil;
wherein the first intermediary bar comprises a first plurality of holes through which the wire rope of the helical coil passes, the first plurality of holes comprising a first pair of adjacent holes and a second pair of adjacent holes, wherein a distance between the first pair of adjacent holes of the first plurality of holes is different than a distance between the second pair of adjacent holes of the first plurality of holes;
wherein the second intermediary bar comprises a second plurality of holes through which the wire rope of the helical coil passes, the second plurality of holes comprising a first pair of adjacent holes and a second pair of adjacent holes, wherein a distance between the first pair of adjacent holes of the second plurality of holes is different than a distance between the second pair of adjacent holes of the second plurality of holes;
wherein at least some of the first plurality of holes and the second plurality of holes are oriented at angles other than perpendicular relative to the central longitudinal axis;
wherein the first bar and the second bar are disposed one hundred and eighty degrees apart from each other about the central longitudinal axis;
wherein the first intermediary bar and the second intermediary bar are disposed one hundred and eighty degrees apart from each other about the central longitudinal axis;
wherein the first bar and the second bar are disposed circumferentially between the first intermediary bar and the second intermediary bar; wherein the isolator device is configured to support a compressive load applied by the equipment to the isolator device that moves the first bar toward the second bar;
wherein the first intermediary bar and the second intermediary bar each comprise a length that is less than lengths of the first bar and the second bar; and
wherein the first intermediary bar and the second intermediary bar are positioned at one of two ends of the isolator device and extend to terminate between the two ends of the isolator device.
19 . The isolator device of claim 1 , wherein:
the first intermediary bar comprises a first plurality of holes through which the coil passes, the first plurality of holes comprising a first pair of adjacent holes and a second pair of adjacent holes, wherein a distance between the first pair of adjacent holes of the first plurality of holes is different than a distance between the second pair of adjacent holes of the first plurality of holes; and
the second intermediary bar comprises a second plurality of holes through which the coil passes, the second plurality of holes comprising a first pair of adjacent holes and a second pair of adjacent holes, wherein a distance between the first pair of adjacent holes of the second plurality of holes is different than a distance between the second pair of adjacent holes of the second plurality of holes.
20 . The isolator device of claim 1 , wherein each of the first intermediary bar and the second intermediary bar comprise holes through which the coil passes, wherein at least some of the holes are oriented at angles other than perpendicular relative to the central longitudinal axis.