Many of the features of socket wrenches and handles that we take for granted were actually Blackhawk innovations! They weren't gimmicks either, in fact I believe they were the finest tools ever made!
The Blackhawk Lock On sockets were simply superb, and the fact that mine are still not only usable, but still noticeably better than many other makes, 70 years after they were purchased by my Grandfather confirms this! Never had one of their free wheeling ratchets but suspect they worked well! The ones I like the look of best are the 'dome headed' ones from the 50's, but they must be mega rare!
Sadly, many of the innovative tools pioneered by Blackhawk are not currently available from any manufacturer! The Japanese firm Ko Ken offer many of the patterns, but sadly not these! (Although I get the impression that Ko Ken is headed up by an enthusiast striving to make better tools, rather than a board of brown nosers trying to earn brownie points from the big cheese by forever cutting costs, so who knows what may be offered in future)!
There is a Blackhawk thread here with some more info! It's a great read!