US3790040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Worm metering device with shut-off mechanism
Assignee: FR Hesser Maschinenfabrik AG
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Filing: 1972-02-24
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Granted: 1974-02-05
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Expires: 1992-02-24
Abstract
Abstract An apparatus and method for metering material, such as in container filling operations, which have closure means in the form of a first movable member, preferably of an annular configuration, operating in conjunction with second closure means in the form of a conically shaped closure element which the first closure means is adapted to abut in mating sealing engagement to prevent discharge of material.
Inventors
- 👤 S Bahr
- 👤 W Saur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:16
CPC Classifications
G; G01; G01F; G01F13/00; G01F13/001; G01F13/005; B; B65; B65B; B65B1/00; B65B1/04; B65B1/10; B65B1/12
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
162 words
In a rotary discharge controlling apparatus having a metering device adapted to meter material through a discharge outlet and having closure means adapted to prevent undesired trickling or leaking of material therefrom comprising: a chamber for receiving flowable granular like material; a filler conduit connected to said chamber; a metering worm operatively disposed within said conduit generally against longitudinal displacement; a rigidly arranged first cooperating movable closure sleeve means around said conduit movable only in response to a predetermined actuation thereof; controlled actuating means structurally linked to said first closure means to effect longitudinal movement thereof; and second cooperating closure means mounted in operative relationship to said first cooperating movable closure means, said second closure means having a generally smooth tapering conical configuration operatively arranged at and on the terminal end of said metering worm and being adapted to matingly engage in sealing relationship with said first cooperating movable closure means when said first and second closure means are brought into engagement.
Claim 2
Dependent Claim
162 words
In a rotary discharge controlling apparatus having a metering device adapted to meter material through a discharge outlet and having closure means adapted to prevent undesired trickling or leaking of material therefrom comprising: a chamber for receiving flowable granular like material; a filler conduit connected to said chamber; a metering worm operatively disposed within said conduit generally against longitudinal displacement; a rigidly arranged first cooperating movable closure sleeve means around said conduit movable only in response to a predetermined actuation thereof; controlled actuating means structurally linked to said first closure means to effect longitudinal movement thereof; and second cooperating closure means mounted in operative relationship to said first cooperating movable closure means, said second closure means having a generally smooth tapering conical configuration operatively arranged at and on the terminal end of said metering worm and being adapted to matingly engage in sealing relationship with said first cooperating movable closure means when said first and second closure means are brought into engagement.
Claim 3
Dependent Claim
81 words
The apparatus of claim 1 wherein said first closure means includes an axially movable sleeve-like member, and means for moving said axially movable member between first and second axial positions wherein at one of said positions, said first closure means is adapted to matingly engage in sealing relationship said second closure means, and at the other of said positions, said axially movable member is significantly spaced from the former to permit material to flow between said first and second closure means.
Claim 4
Dependent Claim
25 words
The apparatus of claim 1, wherein at least one of said first and second closure means is adapted to be rotated about a longitudinal axis.
Claim 5
Dependent Claim
19 words
The apparatus of claim 3, wherein said second closure means is adapted to be rotated about a fixed axis.
Claim 6
Dependent Claim
40 words
The apparatus of claim 1, wherein said first movable closure means includes guide means operatively associated therewith adapted to deflect metered material when said first and second closure means are in a spaced-apart relationship permitting material to be metered therebetween.
Claim 7
Dependent Claim
38 words
The apparatus of claim 1, wherein said second closure means having a generally tapering conical configuration has an upper end portion merging gradually into a generally cylindrical part connected to the terminal end portion of the metering worm.
Claim 8
Dependent Claim
62 words
The apparatus of claim 4, wherein said second closure means having a generally tapering conical configuration includes an annular sealing surface at the lower end thereof extending substantially transversely of the axis of rotation of said second closure means, said first closure means being to sealingly engage said annular sealing surface when said first and second closure means are in sealing engagement.
Claim 9
Dependent Claim
37 words
The apparatus according to claim 4, wherein said first closure means includes bearing means and a sleeve suspended from said bearing means for selective bearing contact with said second closure means when the latter is still rotating.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |