Patent US3792724A successfully refreshed from Google Patents.
US3792724A
Expired / Lapsed
US
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Bag filling machine
Assignee: Delamere and Williams Co Ltd
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Filing: 1972-05-15
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Granted: 1974-02-19
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Expires: 1992-05-15
Abstract
Abstract A bag making and liquid filling machine characterized by a dripfree structure whereby to prevent contamination of the bag making material in an area where a heat seal is to be made.
Inventors
- 👤 D Hunter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:44
CPC Classifications
B; B65; B65B; B65B9/00; B65B9/10; B65B9/20; B65B9/2014; B65B9/2028; B29; B29C; B29C65/00; B29C65/02; B29C65/18; B29C65/74; B29C65/745; B29C65/7451; B29C65/78; B29C65/7858; B29C65/7888; B29C65/7891; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/40; B29C66/41; B29C66/43; B29C66/431; B29C66/4312; B29C66/432; B29C66/4322; B29C66/49; B29C66/70; B29C66/73; B29C66/737; B29C66/7373; B29C66/80; B29C66/83; B29C66/832; B29C66/8322; B29C66/83221; B65B39/00; B65B39/04; B65B9/213; B67; B67C; B67C3/00; B67C3/02; B67C3/22; B67C3/26; B67C3/2608; B65B2210/00; B65B2210/06; B65B2210/08
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
74 words
In a liquid filling machine, in combination, a filling tube, means for supporting a container to receive liquid from the filling tube, said filling tube having a drip-free outlet comprising a screen, an annular space in communication with the periphery of said screen, and suction means in communication with said space to effect suspension of any liquid gathered adjacent said periphery whereby to prevent drip from said outlet upon completion of a filling operation.
Claim 2
Dependent Claim
74 words
In a liquid filling machine, in combination, a filling tube, means for supporting a container to receive liquid from the filling tube, said filling tube having a drip-free outlet comprising a screen, an annular space in communication with the periphery of said screen, and suction means in communication with said space to effect suspension of any liquid gathered adjacent said periphery whereby to prevent drip from said outlet upon completion of a filling operation.
Claim 3
Dependent Claim
28 words
A liquid filling machine as defined in claim 1 wherein the outlet screen is conical in shape with the apex of the cone extending up into the outlet.
Claim 4
Dependent Claim
29 words
A liquid filling machine as defined in claim 2 wherein the outlet end of said filling tube is curved inwardly for cooperation with the base of said conical screen.
Claim 5
Dependent Claim
44 words
A liquid filling machine as defined in claim 3 which is particularly adapted for filling liquids having the viscosity of oil in a rapid and drip-free manner wherein the filling tube is of relatively large diameter conducive to a gentle and rapid filling operation.
Claim 6
Dependent Claim
55 words
A liquid filling machine as defined in claim 3 wherein the annular suction space is defined by the outside diameter of the filling tube and the inside diameter of an outer circular band attached to and concentric with said tube, the lower end of said band being also curved inwardly for cooperation with said screen.
Claim 7
Dependent Claim
32 words
A filling machine as defined in claim 5 wherein the base of said screen is connected to the lower end of a ring fitted over the end of said outer circular band.
Claim 8
Dependent Claim
71 words
In a filling machine, in combination, means for measuring successive charges of liquid to be deposited into successive containers, a filling tube having an outlet, said outlet having a drip-free structure comprising a conical screen, and suction means in communication with the marginal edge adjacent the periphery of said screen adapted to hold in suspension and to withdraw any liquid collected at said marginal edge upon completion of a filling operation.
Claim 9
Dependent Claim
71 words
In a filling machine, in combination, means for measuring successive charges of liquid to be deposited into successive containers, a filling tube having an outlet, said outlet having a drip-free structure comprising a conical screen, and suction means in communication with the marginal edge adjacent the periphery of said screen adapted to hold in suspension and to withdraw any liquid collected at said marginal edge upon completion of a filling operation.
Claim 10
Dependent Claim
92 words
A filling machine as defined in claim 7 wherein the measuring means includes a cylinder chamber and a piston movable in said chamber, an inlet pipe in communication with said chamber and connected to a source of supply, said inlet pipe having a one-way valve arranged to permit passage of liquid into the chamber only upon upward movement of the piston, said filling tube also being in communication with said chamber and provided with a one-way valve arranged to permit passage of liquid under pressure only upon downward movement of said piston.
Claim 11
Dependent Claim
71 words
In a liquid filling machine, in combination, a filling tube, means for supporting a bag to receive liquid from the filling tube, said filling tube having a drip-free outlet comprising a conical screen, an annular space in communication with the periphery of said screen, and suction means arranged to effect withdrawal of any liquid accumulated adjacent said periphery whereby to prevent drip from said outlet upon completion of a filling operation.
Claim 12
Dependent Claim
71 words
In a liquid filling machine, in combination, a filling tube, means for supporting a bag to receive liquid from the filling tube, said filling tube having a drip-free outlet comprising a conical screen, an annular space in communication with the periphery of said screen, and suction means arranged to effect withdrawal of any liquid accumulated adjacent said periphery whereby to prevent drip from said outlet upon completion of a filling operation.
Claim 13
Dependent Claim
35 words
A liquid filling machine as defined in claim 9 wherein the conical screen is provided with a small radius at its apex, and has a lateral extension as its periphery providing an annular flat portion.
References Cited (Backward Citations)
US2692718A
Cited
US2874733A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-18 | 1977-08-20 | 1978-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-18 | 1981-08-20 | 1982-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-18 | 1985-08-20 | 1986-02-19 | $7700.00 | Window Closed / Lapsed |