I'd really love to get my hands on the guy who invented these ... and give him a piece of my mind.
These handle-less plug caps are an absolute pain to pull out of a wall socket. Apparently the only way of getting these things disconnected without getting bitten is to yank on the wire itself.
The few electrical items I've had the pleasure (hah) of working on that had these plugs; I had to do just that, otherwise my fingers would have gone over the rim and touched the pins or the terminal screws in the front as the cap came loose from the wall socket.
What was so hard about molding a handle on the plastic shell of the plug? I've seen other varieties that are just as old that do have handles (pretty much the kind of replacement cap you see nowadays).
Talk about bad design. I just wonder what the reasoning was behind making them this way.