Dispenser

Abstract

Dispenser suitable for dispensing absorbent sheet material from a roll disposable within said dispenser. The dispenser including: a dispenser body; a rotational shaft suitable for penetration of said roll; a drive unit; and an energy storage system for storing energy. The drive unit is rotationally coupled to said rotational shaft, which includes engagement means suitable for rotationally locking said rotational shaft with said roll. Externally caused rotation of said rotational shaft drives said drive unit, thereby enabling accumulation of energy in said energy storage system, and said drive unit is configured to be powered by energy from said energy storage system for temporarily rotating said rotational shaft. The engagement means includes at least one projection and/or at least one recess arranged on a circumferential outer surface of said rotational shaft for radial engagement with said roll.

1 . Dispenser configured for dispensing absorbent sheet material from a roll disposable within said dispenser, said dispenser comprising:
 a dispenser body;   a rotational shaft configured for penetration of said roll;   a drive unit; and   an energy storage system for storing energy,   wherein said drive unit is rotationally coupled to said rotational shaft,   wherein said rotational shaft comprises engagement means suitable for rotationally locking said rotational shaft with said roll,   wherein externally caused rotation of said rotational shaft drives said drive unit, thereby enabling accumulation of energy in said energy storage system,   wherein said drive unit is configured to be powered by energy from said energy storage system for temporarily rotating said rotational shaft,   wherein said engagement means comprises at least one projection and/or at least one recess arranged on a circumferential outer surface of said rotational shaft for radial engagement with said roll, and   wherein said engagement means comprises a helically formed projection and/or recess arranged on a circumferential outer surface of said rotational shaft.   
     
     
         2 . Dispenser configured for dispensing absorbent sheet material from a roll disposable within said dispenser, said dispenser comprising:
 a dispenser body;   a rotational shaft configured for penetration of said roll;   a drive unit; and   an energy storage system for storing energy,   wherein said drive unit is rotationally coupled to said rotational shaft,   wherein said rotational shaft comprises engagement means suitable for rotationally locking said rotational shaft with said roll,   wherein externally caused rotation of said rotational shaft drives said drive unit, thereby enabling accumulation of energy in said energy storage system,   wherein said drive unit is configured to be powered by energy from said energy storage system for temporarily rotating said rotational shaft,   wherein said engagement means comprises at least one projection and/or at least one recess arranged on a circumferential outer surface of said rotational shaft for radial engagement with said roll, and   wherein said engagement means comprises an axially extending recess arranged on a circumferential outer surface of said rotational shaft.   
     
     
         3 . Dispenser configured for dispensing absorbent sheet material from a roll disposable within said dispenser, said dispenser comprising:
 a dispenser body;   a rotational shaft configured for penetration of said roll;   a drive unit; and   an energy storage system for storing energy,   wherein said drive unit is rotationally coupled to said rotational shaft,   wherein said rotational shaft comprises engagement means suitable for rotationally locking said rotational shaft with said roll,   wherein externally caused rotation of said rotational shaft drives said drive unit, thereby enabling accumulation of energy in said energy storage system,   wherein said drive unit is configured to be powered by energy from said energy storage system for temporarily rotating said rotational shaft,   wherein said engagement means comprises at least one projection and/or at least one recess arranged on a circumferential outer surface of said rotational shaft for radial engagement with said roll, and   wherein said engagement means comprises at least one retractable radial projection arranged on a circumferential outer surface of said rotational shaft, and said rotational shaft comprises an arrangement for rotationally locking said rotational shaft with said dispenser body upon mounting of a roll that does not exhibit engaging means that correspond to said engagement means of said rotational shaft.   
     
     
         4 . Dispenser configured for dispensing absorbent sheet material from a roll disposable within said dispenser, said dispenser comprising:
 a dispenser body;   a rotational shaft configured for penetration of said roll;   a drive unit; and   an energy storage system for storing energy,   wherein said drive unit is rotationally coupled to said rotational shaft,   wherein said rotational shaft comprises engagement means suitable for rotationally locking said rotational shaft with said roll,   wherein externally caused rotation of said rotational shaft drives said drive unit, thereby enabling accumulation of energy in said energy storage system,   wherein said drive unit is configured to be powered by energy from said energy storage system for temporarily rotating said rotational shaft,   wherein said engagement means comprises at least one projection and/or at least one recess arranged on a circumferential outer surface of said rotational shaft for radial engagement with said roll, and   wherein said engagement means comprises at least one retractable radial projection arranged near a free end surface of said rotational shaft, which radial projection is configured to axially secure said roll on said rotational shaft when the complete roll has passed said radial projection in an axial direction.   
     
     
         5 . Dispenser according to  claim 1 , wherein said drive unit is formed by an electrical machine, said energy storage system is formed by an electrical storage system,
 wherein externally caused rotation of said rotational shaft drives said electrical machine, thereby enabling generation of electrical energy that is stored in said electrical storage system, and   wherein said electrical machine is configured to be powered by electrical energy from said electrical storage system for temporarily rotating said rotational shaft.   
     
     
         6 . Dispenser according to  claim 3 , wherein said at least one retractable radial projection is spring loaded towards a projecting position. 
     
     
         7 . Dispenser according to  claim 3 , wherein said retractable radial projection temporarily locks said rotational shaft upon radial depression from its projecting position. 
     
     
         8 . Dispenser according to  claim 1 , wherein said temporary rotation of said rotational shaft is realised by operating said drive unit a certain time period, or operating said drive unit such that said rotational shaft rotates a certain angle,
 wherein said certain time period or certain angle is predetermined or calculated based on registered or estimated radial roll size.   
     
     
         9 . Dispenser according to  claim 3 , wherein said dispenser body comprises a dispenser console and hood pivotally connected to said dispenser console, said rotational shaft being rotatably mounted to said hood or said console. 
     
     
         10 . Dispenser according to  claim 9 , wherein said at least one retractable radial projection is mechanically actuated upon pivoting motion of said hood. 
     
     
         11 . Dispenser according to  claim 1 , wherein said dispenser comprises an additional rotational shaft suitable for holding an additional roll, said additional rotational shaft being rotationally connectable either to said drive unit or to an additional drive unit, said additional rotational shaft comprising engagement means suitable for rotationally locking said additional rotational shaft with said additional roll,
 wherein externally caused rotation of said additional rotational shaft drives said drive unit or said additional drive unit, thereby enabling accumulation of energy in said energy storage system or an additional energy storage system, and   wherein said drive unit or said additional drive unit is configured to be powered by energy from said energy storage system or said additional energy storage system for temporarily rotating said additional rotational shaft.   
     
     
         12 . Dispenser according to  claim 11 , wherein said additional drive unit is formed by an additional electrical machine, said additional energy storage system is formed by an additional electrical storage system,
 wherein externally caused rotation of said additional rotational shaft drives said electrical machine or said additional electrical machine, thereby enabling generation of electrical energy that is stored in said electrical storage system or said additional electrical storage system, and   wherein said electrical machine or said additional electrical machine is configured to be powered by electrical energy from said electrical storage system or said additional electrical storage system for temporarily rotating said additional rotational shaft.   
     
     
         13 . Dispenser according to  claim 11 , wherein said dispenser comprises means suitable for registering radial roll size of both said roll and said additional roll,
 wherein said dispenser being configured to dispense absorbent sheet paper from the roll having the smallest radial roll size.   
     
     
         14 . Dispenser according to  claim 1 , wherein said dispenser comprises a rear wall that is configured to at least partly contact an external wall onto which said dispenser is configured to be installed, and a longitudinal axis of said rotational shaft and/or additional rotational shaft is in a closed dispenser arranged substantially perpendicular to a plane defined by the parts of said rear wall that are configured to contact said wall. 
     
     
         15 . Dispenser according to  claim 1 , wherein said externally caused rotation of said rotational shaft and/or said additional rotational shaft is configured to be realised by withdrawal of absorbent sheet material by a user from said roll and/or said additional roll when arranged on said rotational shaft or said additional rotational shaft, and said temporary rotation of said rotational shaft and/or said addition rotational shaft is suitable for advancing a certain length of said absorbent sheet material from said roll and/or additional roll, for the purpose of realising an advancement of a leading tail of said absorbent sheet material. 
     
     
         16 . Dispenser according to  claim 4 , wherein said radial projection for axially securing the roll is located on a leaf spring. 
     
     
         17 . Dispenser according to  claim 16 , wherein said leaf spring carrying said radial projection for axially securing said roll additionally is provided with a further radial projection, which is adapted to engage with a recess or cavity of a core or said roll. 
     
     
         18 . Dispenser according to  claim 3 , wherein a leaf spring is secured to said rotational shaft, said retractable radial projection is arranged on said leaf spring, and said radial projection is arranged in a window in said rotational shaft. 
     
     
         19 . Dispenser according to  claim 3 , wherein a leaf spring secured to said rotational shaft is configured to temporarily rotationally lock said rotational shaft with the dispenser body upon radial depression of the leaf spring a certain length. 
     
     
         20 . Dispenser according to  claim 19 , wherein said rotational locking is realised by engagement of a free end of said leaf spring to a stationary member of said dispenser body. 
     
     
         21 . Dispenser according to  claim 20 , wherein the dispenser comprises an internal stationary shaft that rotationally supports said rotational shaft at end regions of said rotational shaft, said stationary shaft comprises engagement means in form of one or more radial projections that are configured to engage with said free end of said leaf spring for temporarily preventing rotation of said rotational shaft. 
     
     
         22 . Dispenser according to  claim 21 , wherein said free end of said leaf spring is provided with corresponding engagement means for enabling rotational locking of the rotational shaft to said stationary shaft. 
     
     
         23 . Dispenser assembly comprising a dispenser according to  claim 1 , and a hollow cylindrical core suitable for supporting a roll of absorbent sheet material,
 wherein said rotational shaft comprising engagement means suitable for rotationally locking said rotational shaft with said core and said core is provided with corresponding engagement means,   wherein said dispenser assembly comprising: a dispenser body, a rotational shaft on which said core is arranged, a drive unit, and an energy storage system for storing energy,   wherein said drive unit is rotationally coupled to said rotational shaft),   wherein each of said rotational shaft and said core comprising engagement means that are in cooperating mating position, such that said rotational shaft being rotationally locked with said core,   wherein externally caused rotation of said core drives said drive unit, thereby enabling accumulation of energy that is stored in said energy storage system, and   wherein said drive unit is configured to be powered by electrical energy from said electrical storage system for temporarily rotating said core.