US3578038A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Receptacle filling method
Assignee: Federal Manufacturing Co
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Filing: 1967-09-15
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Granted: 1971-05-11
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Expires: 1987-09-15
Abstract
Abstract A rotary type filling machine having a plurality of filling heads spaced about is periphery. The filling heads have vent tubes for communicating the interior of flexible walled containers, which are to be filled by the machine, with a gas storage area within the machine. This area is subjected to a pulsing vacuum which vacuum is communicated to the containers via the vent tubes and which operates on said containers to prevent overfilling of the same.
Inventors
- 👤 Chester O Burford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:40
CPC Classifications
B; B67; B67C; B67C3/00; B67C3/02; B67C3/16
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
120 words
A method of filling self-supported, flexible-walled and openmouthed receptacles with liquid, which comprises, initially applying a filler nozzle to the receptacle mouth, sealing the receptacle mouth, commencing the supply of liquid to the receptacle, advancing the receptacle along a predetermined path to a discharge zone while continuing to supply liquid thereto and at the same time applying a vacuum of alternately increased and decreased magnitude to the interior of the receptacle to thereby flex the receptacle walls in a pulsating manner as liquid is being supplied thereto, ceasing to supply liquid to the receptacle, then establishing a controlled low vacuum condition in the receptacle and finally providing a momentary high vacuum and immediately removing the nozzle from the receptacle mouth.
Claim 2
Independent Claim
120 words
A method of filling self-supported, flexible-walled and openmouthed receptacles with liquid, which comprises, initially applying a filler nozzle to the receptacle mouth, sealing the receptacle mouth, commencing the supply of liquid to the receptacle, advancing the receptacle along a predetermined path to a discharge zone while continuing to supply liquid thereto and at the same time applying a vacuum of alternately increased and decreased magnitude to the interior of the receptacle to thereby flex the receptacle walls in a pulsating manner as liquid is being supplied thereto, ceasing to supply liquid to the receptacle, then establishing a controlled low vacuum condition in the receptacle and finally providing a momentary high vacuum and immediately removing the nozzle from the receptacle mouth.
Claim 3
Dependent Claim
44 words
A method of filling receptacles according to claim 1, wherein the interior of the receptacle is initially subjected to a controlled vacuum of a sufficiently low magnitude to prevent collapse of the receptacle walls as the filler nozzle is applied to the receptacle mouth.
Claim 4
Dependent Claim
35 words
A method of filling receptacles according to claim 1, wherein the increases and decreases in vacuum and the resulting pulsations of the receptacle walls are timed proportionately to the speed of advancement of the receptacles.
Claim 5
Dependent Claim
52 words
A method of filling receptacles according to claim 1, wherein the vacuum is drawn through a vent tube in the filler nozzle placed in communication with the interior of the receptacle prior to supplying liquid thereto and withdrawn from communication with the interior of the receptAcle after the receptacle has been filled.
Claim 6
Dependent Claim
29 words
A method of filling receptacles according to claim 4, wherein the vent tube is subjected to a high vacuum immediately upon removal of the nozzle from the receptacle mouth.
Claim 7
Dependent Claim
24 words
A method of filling receptacles according to claim 4, wherein the liquid is dispensed through a sleeve surrounding and spaced from the vent tube.
Claim 8
Dependent Claim
37 words
A method of filling receptacles according to claim 6, wherein the sleeve is mounted for reciprocal movement and is normally seated under resilient pressure at its lower end on a sealing member carried by the vent tube.
Claim 9
Dependent Claim
46 words
A method of filling receptacles according to claim 6, wherein the sleeve is actuated by the receptacle to be filled, and means is provided for advancing the receptacle to a position under the sleeve and through the filling zones along with the sleeve and vent tube.
Claim 10
Dependent Claim
45 words
A method of filling receptacles according to claim 4, wherein the receptacle and the vent tube are advanced along a defined path from an initial low vacuum zone, through the zone of alternately increasing and decreasing vacuum and the subsequent zone of uniform low vacuum.
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) | 1974-05-10 | 1974-11-09 | 1975-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-10 | 1978-11-09 | 1979-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-10 | 1982-11-09 | 1983-05-11 | $7700.00 | Window Closed / Lapsed |