Mike, with respect I do not know your hose tops but, believe me, such things are not new. Not that I have ever bought any, but I have seen them listed by several Highland Dress suppliers over many years and especially, I think, by suppliers patronised by Pipe Bands.

I am no expert in matters of the law, but I would imagine that if you do not patent or copyright something you have originated, it is fair game for others to take it up and maybe profit by it.

Just my sixpennyworth.

Take care,
Ham.