Pressor field

A pressor field is a piece of Quintesson technology in the Generation 1 continuity family.

A pressor field was a ship-generated energy wave that covered a vessel which protected it from attack. Despite this, it can be overwhelmed.

Fiction

Generation 1 cartoon

A Quintesson cruiser, in its attempt to locate a Quintesson Journal, was uncovered by Superion whose power would have destroyed the ship. In order to protect themselves, the Quintessons activated a pressor field which held back the giant Autobot until he fired his shoulder cannon that nullified the field. The Big Broadcast of 2006 (episode)