Patent ID: 9382686
Filing Date: 2016-07-05
CPC Classification: E02F,F15B,Y10T

Claim Text:
1. A quick coupler comprising: a coupling receptacle for receiving a first locking part, the coupling receptacle having a self-locking securing element for one or both of catching or securing the first locking part in the coupling receptacle; a locking receptacle for receiving a second locking part, the locking receptacle having a pressure-medium-actuatable locking element for locking the second locking part in the locking receptacle; a pressure circuit actuating both the self-locking securing element and the pressure-medium-actuatable locking element, the pressure circuit having: wherein the self-locking securing element is connected with the unlocking pressure port via a first switching valve that opens upon reaching and subsequently exceeding a first pressure; and wherein the pressure control means selectively controls the pressure applied at the unlocking pressure port to a second pressure greater than the first pressure and to a third pressure less than the first pressure.