Apparatus for storing and dispensing stacked articles

Claim 2

Apparatus for storing and dispensing stacked articles, comprising: a frame adapted to accommodate a plurality of stacked articles; a platform situated in said frame adapted to support the stack of articles, said platform having upper and lower surfaces and four corner regions; and means coupled to said platform for positioning the platform such that the uppermost article in the stack is positioned at a predetermined height and automatically elevating said platform and stack supported thereby upon removal of the uppermost article until the next article beneath it reaches said predetermined height, said positioning and elevating means including a drum rotatably mounted on said platform, a torsion spring situated over said drum, said torsion spring having a first end affixed to said platform and a second end fixed to said rotatable drum, first pulley means fixed to a first end of said drum, second pulley means fixed to a second end of said drum, a first pair of cable means, each having a first end affixed to said first pulley means, a second end adapted to be affixed to a respective upper region of said frame and a length portion engaging a respective corner region of said platform, and a second pair of cable means each having a first end affixed to said second pulley means, a second end adapted to be fixed to a respective upper region of said frame and a length portion engaging a respective corner region of said platform.

Claim 3

The combination of claim 1, wherein a rotatable pulley is mounted at each of said corner regions of said platform and wherein said length portion of each of said cable means passes over a respective one of said pulleys.

Claim 4

The combination of claim 1, wherein each of said first pair of cable means is wound around said first pulley means in the same direction and wherein each of said second pair of cable means is wrapped around said second pulley means in the same direction.

Claim 5

The combination of claim 1 wherein each of said first and second pulley means comprises a pulley region of said drum at a respective lateral end thereof, each pulley region having a diameter which is less than the diameter of said drum.

Claim 6

The combination of claim 1 further including means for fixing said second ends of said cable means to a respective upper region of said frame.

Claim 7

The combination of claim 5 wherein said fixing means include a hanger member having a first end to which said second end of respective cable means is fixed and a second attachment end, and bracket means adapted to be fitted over an upper edge of said frame for capturing said second attachment end of said hanger member.

Claim 8

The combination of claim 1 wherein each article of said stack includes a plurality of separately removable units, wherein said apparatus further includes means for preventing elevation of said platform upon removal of less than all of said units from said article.

Claim 9

The combination of claim 7 wherein said elevation preventing means include removable stop means affixed to said frame adapted to enage the uppermost of one of said articles to prevent elevation thereof.

Claim 10

The combination of claim 2, wherein said cable means each run directly from said respective pulley means to said respective pulleys.

Claim 11

The combination of claim 2, wherein each of said pulleys are disposed in a respective recess formed in said platform.

Claim 12

The combination of claim 10, wherein each of said pulleys are disposed at a distance away from said frame.

Claim 13

The combination of claim 1, where each of said first and second pulleys means comprise a pulley region of said drum at a respective lateral end thereof.

Claim 14

Apparatus for storing and dispensing stacked articles, comprising: a frame adapted to accommodate a plurality of stacked articles; a platform situated in said frame adapted to support the stack of articles, said platform having upper and lower surfaces and four corner regions; and means coupled to said platform for positioning the platform such that the uppermost article in the stack is positioned at a predetermined height and automatically elevating said platform and stack supported thereby upon removal of the uppermost article until the next article beneath it reaches said predetermined height, said positioning and elevating means including a drum rotatably mounted on said platform, a torsion spring situated over said drum, said torsion spring having a first end affixed to said platform and a second end fixed to said rotatable drum, first pulley means fixed to a first end of said drum, second pulley means fixed to a second end of said drum, a first pair of cable means, each having a first end affixed to said first pulley means, a second end adapted to be affixed to a respective upper region of said frame and a length portion engaging a respective corner region of said platform, and a second pair of cable means each having a first end affixed to said second pulley means, a second end adapted to be fixed to a respective upper region of said frame and a length portion engaging a respective corner region of said platform; wherein each article of said stack includes a plurality of separately removable units, and said apparatus further including means for preventing elevation of said platform upon removal of less than all of said units from said article; wherein said elevation preventing means include detent means coupled to the drum for sensing torque differentials.

Claim 15

Apparatus for storing and dispensing stacked articles, comprising: a frame adapted to accommodate a plurality of stacked articles; a platform situated in said frame adapted to support the stack of articles, said platform having upper and lower surfaces and four corner regions; and means coupled to said platform for positioning the platform such that the uppermost article in the stack is positioned at a predetermined height and automatically elevating said platform and stack supported thereby upon removal of the uppermost article until the next article beneath it reaches said predetermined height, said positioning and elevating means including a drum rotatably mounted on said platform, a torsion spring situated over said drum, said torsion spring having a first end affixed to said platform and a second end fixed to said rotatable drum, first pulley means fixed to a first end of said drum, second pulley means fixed to a second end of said drum, a first pair of cable means, each having a first end affixed to said first pulley means, a second end adapted to be affixed to a respective upper region of said frame and a length portion engaging a respective corner region of said platform, and a second pair of cable means each having a first end affixed to said second pulley means, a second end adapted to be fixed to a respective upper region of said frame and a length portion engaging a respective corner region of said platform; wherein each article of said stack includes a plurality of separately removable units, and said apparatus further including means for preventing elevation of said platform upon removal of less than all of said units from said article; wherein said elevation preventing means include detent means coupled to the drum for sensing torque differentials.

Claim 16

The combination of claim 13 wherein said detent means include a plate affixed to a lateral end of said drum having a first aperture formed therein, a bracket to which the drum is rotatably mounted situated contiguous to said plate, said bracket having a second aperture formed therein adapted to aline with said first aperture during rotation of said drum, and a locking member held in said second aperture and adapted to project into said first aperture upon alignment of said first and second apertures, and leaf spring means for urging said locking member into said second aperture.

Claim 17

The combination of claim 14, wherein said locking member is a ball.

Claim 18

Apparatus for storing and dispensing stacked articles, comprising: a frame adapted to accommodate a plurality of stacked articles; a platform situated in said frame adapted to support the stack of articles, said platform having upper and lower surfaces and four corner regions; and means coupled to said platform for positioning the platform such that the uppermost article in the stack is positioned at a predetermined height and automatically elevating said platform and stack supported thereby upon removal of the uppermost article until the next article beneath it reaches said predetermined height, said positioning and elevating means including a drum rotatably mounted on said platform, a torsion spring situated over said drum, said torsion spring having a first end affixed to said platform and a second end fixed to said rotatable drum, first pulley means fixed to a first end of said drum, second pulley means fixed to a second end of said drum, a first pair of cable means, each having a first end affixed to said first pulley means, a second end adapted to be affixed to a respective upper region of said frame and a length portion engaging a respective corner region of said platform, and a second pair of cable means each having a first end affixed to said second pulley means, a second end adapted to be fixed to a respective upper region of said frame and a length portion engaging a respective corner region of said platform; wherein each article of said stack includes a plurality of separately removable units, and said apparatus further including means for preventing elevation of said platform upon removal of less than all of said units from said article; wherein said elevation preventing means includes means for sensing torque differentials.

Claim 19

Apparatus for storing and dispensing stacked articles, comprising: a frame adapted to accommodate a plurality of stacked articles; a platform situated in said frame adapted to support the stack of articles, said platform having upper and lower surfaces and four corner regions; and means coupled to said platform for positioning the platform such that the uppermost article in the stack is positioned at a predetermined height and automatically elevating said platform and stack supported thereby upon removal of the uppermost article until the next article beneath it reaches said predetermined height, said positioning and elevating means including a drum rotatably mounted on said platform, a torsion spring situated over said drum, said torsion spring having a first end affixed to said platform and a second end fixed to said rotatable drum, first pulley means fixed to a first end of said drum, second pulley means fixed to a second end of said drum, a first pair of cable means, each having a first end affixed to said first pulley means, a second end adapted to be affixed to a respective upper region of said frame and a length portion engaging a respective corner region of said platform, and a second pair of cable means each having a first end affixed to said second pulley means, a second end adapted to be fixed to a respective upper region of said frame and a length portion engaging a respective corner region of said platform; wherein each article of said stack includes a plurality of separately removable units, and said apparatus further including means for preventing elevation of said platform upon removal of less than all of said units from said article; wherein said elevation preventing means includes means for sensing torque differentials.