Hose support strap for railway car brake line
A hose strap for a railway car brake line having a flexible strap having a plurality of through holes and two clips attached to the strap. Each clip has a first leg and a second leg, which are offset from each other and curled at the ends. As a result of these innovations, the hose strap according to the invention has an improved reaction force, load support and lifespan.
1. A hose strap for a railway car brake line, comprising:
a flexible strap having a plurality of substantially identical oblong through holes positioned in a row lengthwise along the strap so that a longitudinal axis of the oblong through holes coincides with a longitudinal axis of the strap; and
two one-piece metal clips attached respectively to opposite ends of the strap;
wherein each clip comprises a first leg and a second leg extending from a major bend, each said first and second leg extending completely through adjacent through holes in the strap, the distance between said first and second leg along the longitudinal axis of the strap being greater than the distance, between identical points on two adjacent through holes along the same axis.
2. A hose strap according to claim 1 , wherein an end of the first leg of each clip extends through a through hole; and bends around the second leg in a direction away from the major bend and toward the flexible strap.
3. The hose strap according to claim 1 , wherein an end of the second leg of each clip extends through a through hole and bends about 90 degrees in a direction toward the major bend of the clip.
4. The hose strap according to claim 1 , wherein the through holes are beveled.
5. The hose strap according to claim 1 , having two through holes at one end of the strap and between 6 holes and 12 holes on the opposite end.
6. The hose strap according to claim 1 , wherein the distance between the legs of each clip is greater than the distance between identical points on adjacent through holes by about 0.2 inches to about 0.75 inches on the longitudinal, axis before a load is applied to the strap.
7. The hose strap according to claim 1 , wherein identical points on adjacent through holes are separated by a distance of 1 inch or less on the longitudinal axis.
8. The hose strap according to claim 1 , wherein the flexible strap is thicker at the longitudinal axis than at the sides, thickness being measured in a direction perpendicular to the longitudinal axis of the flexible strap.
9. The hose, strap according to claim 1 , wherein the second leg is load bearing after application of a load and displacement of the clip by a distance of about 0.2 inches to about 0.75 inches in the direction of the load.
10. The hose strap according to claim 1 , exhibiting a permanent set of less than ½ inch upon applying a load, of 25 lbs for 120 hours, according to AAR Standard S-4006.
11. The hose strap according to claim 1 , exhibiting a maximum load before failure of greater than 300 lbs, according to AAR Standard S-4006.