US3557889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for filling containers with predetermined quantities of material
Assignee: Pillsbury Co
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Filing: 1967-12-15
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Granted: 1971-01-26
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Expires: 1987-12-15
Abstract
Abstract Apparatus for accurately filling packages with granular or fluid material composed of a dispenser for underfilling the packages, a scale for checking the deficiency and a supplemental filling receptacle composed of several sections each containing a different measured quantity of material, e.g. 1/8 -, 1/4 - and 1/2 -oz. quantities. The scale is connected to gates provided in each section of the receptacle for emptying predetermined sections into the package in the proper combination to bring the weight of the package to the target weight in accordance with the measured deficiency. Several receptacles positioned at spaced intervals on an endless chain conveyor are filled at one station and dumped at a second station into the underfilled packages.
Inventors
- 👤 Jack J Rejsa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:26
CPC Classifications
B; B65; B65B; B65B1/00; B65B1/30; B65B1/32; G; G01; G01G; G01G13/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
182 words
A method for accuracy filling packages to a desired target weight comprising, filling the packages to a weight which is less than the desired target weight, placing successive packages on a scale to determine the weight deficiency in each package, providing a plurality of hoppers each containing a quantity of material for making up the deficiency of the weight of the packages, dividing said quantity in said hopper into a plurality of quantities at least one of which differs in weight from the others, placing the hoppers in continuous motion to present each hopper successively at a fill station, feeding the partially filled packages in succession to the fill station and causing the hoppers to empty into the packages when each of the moving hoppers is in alignment with its corresponding package, and emptying said different quantities of material into each package in different combinations to provide a total quantity which is approximately equal to the weight deficiency measured on the scale to thereby add to each one of the packages a total increment approximately equal to the weight of the deficiency.
Claim 2
Independent Claim
182 words
A method for accuracy filling packages to a desired target weight comprising, filling the packages to a weight which is less than the desired target weight, placing successive packages on a scale to determine the weight deficiency in each package, providing a plurality of hoppers each containing a quantity of material for making up the deficiency of the weight of the packages, dividing said quantity in said hopper into a plurality of quantities at least one of which differs in weight from the others, placing the hoppers in continuous motion to present each hopper successively at a fill station, feeding the partially filled packages in succession to the fill station and causing the hoppers to empty into the packages when each of the moving hoppers is in alignment with its corresponding package, and emptying said different quantities of material into each package in different combinations to provide a total quantity which is approximately equal to the weight deficiency measured on the scale to thereby add to each one of the packages a total increment approximately equal to the weight of the deficiency.
Claim 3
Dependent Claim
46 words
The method of claim 1 wherein said material is continuously fed in the form of an uninterrupted stream to said hopper and the time that the continuous stream is fed to the hopper is controlled to thereby regulate the amount of material fed to the hopper.
Claim 4
Dependent Claim
51 words
The method of claim 1 wherein a continuously moving stream of said material is fed to said hopper and wherein the continuously moving stream is subdivided into a plurality of streams of selected sizes which are segregated from one another and stored within the hopper to define said quantities of material.
Claim 5
Dependent Claim
21 words
The method of claim 1 wherein one of said hoppers is being filled while another of said hoppers is being emptied.
Claim 6
Dependent Claim
25 words
The process according to claim 1 wherein the sum of the different quantities that are added is at least as great as the measured deficiency.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |