Patent Application
20120273605
This invention relates to apparatus for dispensing paper toweling from a roll of paper toweling.
It is known to utilize push bars not part of cabinet structure of a paper towel dispenser to actuate mechanism within the cabinet to cause dispensing. Typically, this mechanism includes a toweling transport drum or roller which causes unwinding of a roll of toweling and delivers the tail of the toweling toward a dispensing position, for example alongside a cutting blade of the dispenser.
U.S. Pat. No. 6,032,898, issued Mar. 7, 2000, is one example of such an arrangement. The roll towel dispenser disclosed in that patent teaches use of actuator means in the form of a push bar utilized to rotate a drive roller causing paper in contact therewith to be unwound from a paper roll and dispensed through a dispensing outlet. The push bar is not part of the cabinet which includes a housing and housing cover but rather is pivotally mounted on the housing, extending outwardly of the housing below the bottom thereof. A single arcuate gear segment is attached to the push bar to apply a force at one end of the drive roller for rotating the drive roller.
Other patent documents considered representative of the current state of the prior art are: U.S. Pat. No. 2,149,088, issued February, 1939, U.S. Pat. No. 2,919,842, issued January, 1960, U.S. Pat. No. 2,930,664, issued March, 1960, U.S. Pat. No. 2,974,839, issued March, 1961, U.S. Pat. No. 3,007,650, issued November, 1961, U.S. Pat. No. 3,126,234, issued March, 1964, U.S. Pat. No. 3,288,387, issued November, 1966, U.S. Pat. No. 3,466,963, issued September, 1969, U.S. Pat. No. 3,628,743, issued December, 1971, U.S. Pat. No. 3,843,218, issued October, 1974, U.S. Pat. No. 3,917,191, issued November, 1975, U.S. Pat. No. 4,067,509, issued January, 1978, U.S. Pat. No. 4,086,833, issued May, 1978, U.S. Pat. No. 4,165,138, issued August, 1979, U.S. Pat. No. 4,192,442, issued March, 1980, U.S. Pat. No. 4,203,562, issued May, 1980, U.S. Pat. No. 4,236,679, issued December, 1980, U.S. Pat. No. 4,317,547, issued March, 1982, U.S. Pat. No. 4,358,169, issued November, 1982, U.S. Pat. No. 4,378,912, issued April, 1983, U.S. Pat. No. 4,396,163, issued August, 1983, U.S. Pat. No. 4,403,748, issued September, 1983, U.S. Pat. No. 4,406,421, issued September, 1983, U.S. Pat. No. 4,611,768, issued September, 1986, U.S. Pat. No. 4,756,485, issued July, 1988, U.S. Pat. No. 4,846,412, issued July, 1989, U.S. Pat. No. 4,856,724, issued August, 1989, U.S. Pat. No. 5,125,548, issued June, 1992, U.S. Pat. No. 5,294,192, issued March, 1994, U.S. Pat. No. 5,400,982, issued March, 1995, U.S. Pat. No. 5,526,973, issued June, 1996 and Canadian Patent No. 2060799, issued August, 1992.
The present invention relates to apparatus for dispensing paper toweling from a roll of paper toweling which utilizes the cover of a dispensing cabinet employed to cover the dispenser housing thereof to cause dispensing of paper toweling maintained within the housing.
The structure disclosed herein is characterized by its relative simplicity, ease and convenience of use, and relatively low cost as compared to dispensers which employ actuator mechanisms separate from the cabinet.
The arrangement disclosed and claimed herein provides a wide and relatively large surface which can be readily engaged by a person's hand, arm, elbow, etc. to cause dispensing. In addition, the large surface is more hygienic than separate, relatively small, actuator bars, push buttons, handles and the like. By giving the user a large target to push, the user can avoid having to touch a place where a previous user has left a wet spot.
By employing the cover to operate the dispensing mechanism a material such as polypropylene, often used to construct dispensing cabinets because of the ability to bead and shed water, can be utilized. Polypropylene is hydrophobic.
Another important attribute of the invention disclosed and claimed herein is the use of a dual rack drive system in association with the wide portion cover, thus ensuring that the transport roller can be driven at two ends, providing stability and reliable operation regardless of where contact is made with the cover portion operatively associated with the dispensing mechanism.
The apparatus for dispensing paper toweling from a roll of paper toweling of the present invention includes a dispenser housing defining a housing interior and an opening communicating with the housing interior permitting access to the housing interior.
A rotatable, elongated toweling support drum is provided for receiving and supporting paper toweling extending from a roll of paper toweling in the housing interior and transporting the paper toweling to dispense the paper toweling.
The apparatus also includes a cover having a first cover portion and a second cover portion. The cover is mounted for movement relative to the housing and selectively movable relative thereto between a first position wherein the opening is enclosed by the first and second cover portions and a second position wherein the opening is uncovered.
Transmission structure is operatively associated with the cover and the toweling support drum and is responsive to movement of the first cover portion relative to the second cover portion when the cover is in the first position to rotate the toweling support drum.
Other features, advantages and objects of the present invention will become apparent with reference to the following description and accompanying drawings.
Referring now to the drawings, apparatus constructed in accordance with the teachings of the present invention includes a dispenser housing 10 defining a housing interior 12 and an opening 14 communicating with the housing interior and permitting access to the housing interior for paper toweling roll replenishment and other purposes.
A cover 16 is hingedly connected to the housing and may be selectively pivoted between a position, shown for example in
The cover 16 includes a cover portion 20 and a cover portion 22. When the cover is closed, the cover portions 20, 22 jointly close the opening 14. The cover comprising the cover portions is hingedly connected at the bottoms of the housing and cover. More particularly, the hinge connection is designated by reference numeral 24 between cover portion 22 and the housing.
Cover portion 22 includes a front panel 30 and cover portion 20 has a front panel 32. The front panels of the cover portions are pivotally connected by hinge structure 34. Cover portion 20 is located below cover portion 22 and is supported by cover portion 22.
Cover portion 22 includes opposed side panels 36 attached to the front panel 30. Cover portion 20 includes side panels 38 attached to the front panel 32 thereof. The side panels of cover portion 20 are disposed inwardly of and alongside the side panels 36 of cover portion 22. This structure contributes to the stability of cover portion 20 when it is pushed inwardly in a manner to be described below.
Roll holders 40 are attached to housing 10 for rotatably supporting a roll of paper toweling 42. Located below the roll of paper toweling is rotatable, elongated toweling support drum or roller 44. Stub shafts extending outwardly from the ends of the toweling support drum are rotatably positioned in support brackets 46 attached to the housing. Gears 50 are affixed to the stub shafts and attached to the toweling support drum by the stub shafts. The gears 50 comprise portions of the transmission structure of the apparatus operatively associated with the cover and the toweling support drum and responsive to movement of the cover portion 20 relative to the cover portion 22 when the cover is closed to rotate the toweling support drum.
Other components of the transmission structure are two toothed rack members 56 attached to the front panel 20, the rack members having a slightly curved configuration. These rack members are disposed on opposite sides of the cover within the interior thereof.
Rotatably mounted on the cover portion and projecting inwardly from the side panels 38 thereof are floating gears 60 which are in alignment with gears 50 on the toweling support drum 44. Stub shafts 62 projecting from the sides of the gears 60 project into slots 64 formed in structure at the side panels 38. As may be seen with reference to the drawings, the slots are slightly inclined downwardly in the direction of the cover portion 20. The force of gravity, in the absence of an outside force being exerted on the floating gears, will cause the floating gears to remain out of engagement with gears 50 of the toweling support drum even when the cover is closed. This is shown for example in
When, however, a pushing force is exerted on the front panel of the cover portion 20, the rack members 56 will also move inwardly and cause the floating gears to engage gears 50. This is shown in
When pushing forces are removed, one or more springs 74 biasing the cover portion 20 in a direction away from the dispenser housing will cause outward movement of the cover portion 20 and the rack members 56. This will cause the floating gears to move back to their initial positions as shown in
By using the floating gears, a user can push on either side of the cover portion 20 without binding the gear train. Also, the floating gear construction avoids having to use a one-way clutch or one-way bearing system.
