A sheet dispenser system having a roll of sheet material and a housing to receive the roll. The roll of sheet material comprises a first end portion incorporating a key, and the housing comprises a mounting portion arranged to support the first end portion of the roll. The mounting portion comprises a lock arrangement which is movable between a locked condition and a free condition. The lock arrangement comprises a rotatable element configured for rotation about an axis, and a locking element configured for engagement with the rotatable element to inhibit rotation of the rotatable element, such that, when the locking element and the rotatable element are engaged, the lock arrangement occupies the locked condition, and when the locking element and the rotatable element are disengaged, the lock arrangement occupies the free condition. The mounting portion is arranged such that the roll is movable between an engaged condition, in which the key engages the mounting portion, and a disengaged condition, in which the key is disengaged from the mounting portion, such that, when the roll is moved from the disengaged to the engaged condition, the first end portion of the roll moves the lock arrangement into the free condition, thereby permitting rotation of the rotatable element. The locking element and the rotatable element are configured for engagement by relative movement of the locking element and the rotatable element towards each other in a direction along the axis of rotation of the rotatable element.

A carriage assembly for a sequential roll paper product dispenser is presented. The carriage assembly is placed within tracks of the dispenser and allows for automatic advancement of roll paper products.

Dispenser with a frame which comprises a dispensing mechanism with filling for the purpose of dispensing a predetermined quantity of the filling, wherein the dispenser further comprises a camera, a processor and a memory, wherein the camera can form an image of at least a portion of the filling, wherein a predetermined reference image is stored in the memory, and wherein the processor is provided for the purpose of determining a similarity between image and reference image, wherein the processor is further provided for the purpose of stopping the dispensing mechanism when said similarity lies below a predetermined value.

A dispenser for rolled paper includes a shell mounted to a spindle assembly which is mounted to a wall for convenient access in a bathroom or other facility. The dispenser also includes a lid assembly mounted to the shell and spindle assembly for rotational or pivotal movement to and between closed and open configurations. When in the closed configuration, a free edge of the paper roll may be pulled from the roll and the roll rotates on the spindle assembly for dispensing the paper. The paper roll may be inspected and/or replaced by rotation of the lid assembly about a pivot pin to an open configuration. Cooperating cam and cam surfaces and the bias of a spring on the pivot pin urge the lid assembly away from the shell during rotation toward the open configuration to allow for proper clearance and positioning of the lid assembly relative to the shell.

A dispensing system has a dispenser for sections of a material web wound onto a roll. A support bar is provided, on each end, a bearing journal protruding out from the roll. At least one of the two bearing journals has a mating surface which is not designed as a rotational surface. The dispenser has a guide for each bearing journal that extends to a dispensing position. A counter surface for the mating surface is provided at the beginning of the guide for each bearing journal that has the mating surface. The insertion of the roller into the dispenser is only possible if the mating surface coincides with the counter surface, which extends to in the dispensing position. The roller is rotatably arranged about the central area of the supporting rod, which does not rotate in the dispensing position.

A dispensing system has a dispenser for sections of a material web wound onto a roll. A support bar is provided, on each end, a bearing journal protruding out from the roll. At least one of the two bearing journals has a mating surface which is not designed as a rotational surface. The dispenser has a guide for each bearing journal that extends to a dispensing position. A counter surface for the mating surface is provided at the beginning of the guide for each bearing journal that has the mating surface. The insertion of the roller into the dispenser is only possible if the mating surface coincides with the counter surface, which extends to in the dispensing position. The roller is rotatably arranged about the central area of the supporting rod, which does not rotate in the dispensing position.