05841259 is referenced by 171 patents and cites 15 patents.

A vacuum cleaner is selectively operable in one of three modes, namely: an automatic self-directing mode, a remotely controlled mode, or a manual mode. The vacuum carries ultrasonic object detectors for detecting walls of a room being cleaned, as well as obstacles in the room. When in a self-directing mode, the vacuum selects a path of travel based upon a detected wall of the room as a reference, and steers itself to avoid obstacles in its path. An electric cord is automatically payed-out and retracted as the vacuum travels. A constant tension is imposed on the cord as it is payed-out or retracted by an appropriate manipulation of a spiral spring connected to the cord.

Title
Vacuum cleaner and control method thereof
Application Number
287272
Publication Number
5841259
Application Date
April 17, 1996
Publication Date
November 24, 1998
Inventor
Jae Bong Lee
Seoul
KR
Suk Jin Han
Suwon
KR
Ji Hyun Kim
Suwon
KR
Agent
Burns Doane Swecker & Mathis L
Assignee
Samsung Electronics
KR
IPC
H02G 11/00
B65H 75/48
A47L 9/00
B64C 13/18
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