Hindu succession act - share of sons wife in coparcenary property

No, not at least during the lifetime of her husband.

Even after that she will be entitled to a share out of her husband's share as a legal heir and not as a coparcener.

A wife is not a coparcener in the HUF to which her husband belongs.

Sir, Thank you very much for your comments.

You are welcome for your appreciations 

Dear Sir,

What rights does a Hindu wife (widow) have under HUF property after deaith of the Karta her husband? 

Distribution of HUF proper upon death of the father amongs two sons and a mother?

Can the widow give her share of property at her will or distribution shall be goverened by HUF rules?