Camshaft adjuster

A hydraulic camshaft adjuster comprising:

• a drive element;
• a first output element;
• and
• a second output element,
• the drive element and the first and second output elements each including multiple vanes,
• the first and second output elements bracing against one another in a circumferential direction via an expanding spring situated between the first and second output elements,
• only the first output element being configured to connect to a camshaft, and
• a locking mechanism for locking or unlocking the first and second output elements with respect to one another so that the first and second output elements rotate either jointly or separately relative to the drive element,
• a vane of the second output element contacting a vane of the drive element, and the expanding spring spacing a vane of the first output element apart from the vane of the drive element and
• the first output element thus being in an angular position relative to the drive element within an angular adjustment range between the first output element and the drive element.