Hinged closure device with first opening indicator

A closure device for a container neck, the closure device comprising:

• a first part having a fastening base for fastening to the container neck, the fastening base extending annularly about a reference axis;
• and
• a second part having a fastening ring that is retained on the fastening base of the first part, a lid that is connected to the fastening ring by a hinge that permits the lid to pivot relative to the fastening ring between a closed position and an open position, and a first-opening indicator in the form of a circular arc extending over an angular section that is greater than 180 degrees about the reference axis, the first-opening indicator being connected to a peripheral rim of the lid by frangible bridges at a location positioned axially between the peripheral rim of the lid and the fastening ring such that a free space is maintained in an axial direction between the fastening ring and the first-opening indicator when the lid is in the closed position prior to a first opening of the lid from the closed position to the open position,
• wherein the first part includes at least two lock zones that engage the first-opening indicator and retain the first-opening indicator with the first part when the lid is first opened from the closed position to the open position such that the frangible bridges between the first-opening indicator and the lid breaks and the first-opening indicator drops by gravity into the free space and comes to bear against the fastening ring when the lid is first opened,
• wherein the first part includes at least one viewing recess, positioned circumferentially between the at least two lock zones, through which the first-opening indicator as well as the free space is visible before the first opening of the lid and through which at least the first-opening indicator is visible after the first opening of the lid.

A closure device for a container having an opening, the closure device comprising:

• a first part having a fastening base for fastening to the container and a peripheral fastening groove;
• and
• a second part having a fastening ring that is retained in the peripheral groove of the fastening base, a lid that is connected to the fastening ring by a hinge that permits the lid to pivot relative to the fastening ring between a closed position and an open position, and a first-opening indicator detachably connected to the lid by at least one frangible connection such that a free space is maintained in an axial direction between the fastening ring and the first-opening indicator when the lid is in the closed position prior to a first opening of the lid from the closed position to the open position,
• wherein the first part includes at least two lock zones that engage the first-opening indicator and retain the first-opening indicator with the first part when the lid is first opened from the closed position to the open position such that the at least one frangible connection between the first-opening indicator and the lid breaks and the first-opening indicator drops into the free space when the lid is first opened,
• wherein the first part includes at least one viewing recess, positioned circumferentially between the at least two lock zones, through which the first-opening indicator is visible before and after the first opening of the lid.