1961 - Venera program: Venera 1 becomes the first manmade object to fly-by another planet by passing Venus (however the probe had lost contact with earth a month earlier and did not send back any data).
... extent by the slipping friction.
The device is covered by US patents 3,726,146 (1973) and 5,353,655 (1994) by L.A. Mishler and US patent 5,800,311 (1998) by ...