Patent ID: 7200949

Claim:
A chalk box assembly, comprising: a hollow housing having a chalk line outlet passage and a reservoir adapted for holding chalk defined therein; a chalk line reel disposed within said housing; a chalk line wound upon said reel, said chalk line having a distal end exiting the housing through the chalk line outlet passage; an electric motor selectively driving said chalk line reel in order to retract the chalk line; and a spring-loaded, remotely releasable line clip assembly attached to the distal end of said chalk line, the assembly having: a body defining an anchor-engaging slot and a spaced apart spring slot; a sleeve slidable on the body and including a spring engagement tab extending into said spring slot; and at least one compression spring disposed within the spring slot of the body wherein the spring engagement tab bears against the spring thereby biasing the sleeve away from the anchor-engaging slot, the spring being compressed when the body is placed over an anchor and tension is applied to the chalk line, and expanded to eject the body from the anchor when the chalk line is released.