Really??? So if your neighbor comes over and 'threatens you with a rake' you can just blow 'em away?
You'd be brought up on charges in a heartbeat.
If someone was swinging a rake at you in a manner which can maim or kill (and those heavy rakes could do both), then you have the right to defend yourself, cop or homeowner.
Now whether charges would be filed or not is another story. We've all heard about charges being filed against someone who defended themselves against an intruder, etc.