Dispensing – With discharge assistant – Container with follower
Reexamination Certificate
2000-07-06
2001-08-07
Shaver, Kevin (Department: 3754)
Dispensing
With discharge assistant
Container with follower
C222S326000, C401S175000
Reexamination Certificate
active
06269982
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates generally to product dispensers, and more particularly, to such dispensers having a trigger activated product advancing riser or platform positioned within the dispenser to move the product contained therein toward a dispensing opening thereof.
2. Description of the Prior Art
Trigger or lever activated product dispensers are known, as represented by the prior art patents of record herein. Such dispensers commonly are used to dispense deodorant or other products retained within the dispenser body in either solid, liquid, gel, cream or paste form. The dispenser body includes an open end at which the product retained therein is to be dispensed, and a closed end opposite said open end proximate which the product is retained and to be advanced through the dispenser body toward the open end for dispensing thereof. A platform or riser commonly is positioned within the dispenser body between the product and the closed end and is movable toward the open end upon activation thereof by screws, levers, springs or other means, so as to move the product out of the open end and thereby dispense same from the dispenser.
Prior art product dispensers of the type described generally are of complex construction requiring multiple parts that are relatively difficult to manufacture and/or assemble so as to provide a desired construction that is reliable during usage for dispensing of the product retained therein. Accordingly, it is desirable to provide a generally uncomplex and easily manufacturable dispenser for dispensing product by trigger activation of dispensing means formed within the dispenser, the operation of which is reliable during usage to accomplish the desired dispensing of the product retained therein.
It also is desirable to provide such a product dispenser which is usable for a wide range of products, such as solids, liquids, gels, creams or pastes, and which includes constructional features to permit retracting of the product back into the dispenser as well as dispensing therefrom, when desired. It also is desirable to provide such a product dispenser which is adaptable for use with cartridge-loaded product retaining members, thereby rendering such a dispenser re-fillable with a fresh product-retaining cartridge when desired.
SUMMARY OF THE INVENTION
The invention provides a product dispenser including a body with a pivot flange positioned on the external surface thereof. A trigger piece is mounted on the body and is pivotal thereon about the pivot flange when a user's hand is wrapped around the body with the user's hand/finger digits positioned upon the trigger piece. A screw gear with connected axle is positioned within the body and is engaged by a gear advancing member in the form of a finger or ribs to be activated by the lower portion of the trigger. A product engaging platform or riser is mounted upon the gear axle and moves up/down when the screw gear is turned clockwise/counterclockwise. To advance the product within the body toward an open end thereof, and thereby dispense the product, the user actuates the trigger by pulling thereagainst at a first end thereof with a digit of the user's hand to cause the gear advancing member to move or rotate the gear one notch in a first direction and thereby advance the riser upwardly. To withdraw the product back into the body, the user actuates the trigger by pulling thereagainst at a second end thereof with another digit of the user's hand to cause the gear advancing member to move or rotate the gear one notch in the opposite direction and thereby withdraw the riser downwardly.
The invention also provides a product dispenser in which the body is adapted for receipt therein of a removable and replaceable product-retaining cartridge which includes a screw gear and connected axle for engagement by the gear advancing member to be activated by the trigger and dispense product from or retract product back into the cartridge in substantially the same manner as the first described product dispenser.
REFERENCES:
patent: 4318499 (1982-03-01), Hamilton
patent: 4865231 (1989-09-01), Wiercinski
patent: 5372444 (1994-12-01), Lhuisset
patent: 5570821 (1996-11-01), Dejonge
patent: 5573341 (1996-11-01), Iaia
patent: 5725133 (1998-03-01), Iaia
patent: 5839622 (1998-11-01), Bicknell et al.
patent: 5860572 (1999-01-01), Harrold et al.
Kreiseder Walter J.
Schmeisser William C.
Stoneberg Thomas C.
Buechner Patrick
Courtesy Corporation
Shaver Kevin
Silverman, Cass & Singer, Ltd.
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