Patent US3804136A successfully refreshed from Google Patents.
US3804136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic unloading spout
Assignee: Continental Carbon Co
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Filing: 1972-09-25
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Granted: 1974-04-16
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Expires: 1992-09-25
Abstract
Abstract A container-filling device featuring two concentric tubes mounted under a storage bin for dry particulate solids. The outer tube, which is slideable on the inner tube, is lowered into the container by an air cylinder which also actuates a lever opening the valve to the bin. When the container is full, the flow of material stops and the air cylinder actuates the lever to close the valve and then continues its upward movement to lift the outer tube out of the container.
Inventors
- 👤 E Thomson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:20
CPC Classifications
B; B65; B65B; B65B39/00; B65B39/12
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
184 words
Apparatus for filling a container with dry particulate solids comprising: a first conduit in communication at its top with a source of said solids and at its bottom with a valve; said valve being operably connected to a lever; a second conduit open at its bottom and in communication at its top with said valve; a third conduit of greater diameter than the second conduit and concentrically surrounding and slideably attached to said second conduit; a first stop means attached to the outside of the second conduit at the lower portion thereof; a second stop means attached inside the upper portion of the third conduit, said second stop means being positioned so that the two stop means come into registry when the second and third conduits are extended with reference to one another; reversible actuating means, operably connected to said lever and said third conduit, for first extending said third conduit and then opening said valve when actuated in a first direction, and for first closing said valve and then retracting said third conduit when actuated in a second direction opposite said first direction.
Claim 2
Dependent Claim
184 words
Apparatus for filling a container with dry particulate solids comprising: a first conduit in communication at its top with a source of said solids and at its bottom with a valve; said valve being operably connected to a lever; a second conduit open at its bottom and in communication at its top with said valve; a third conduit of greater diameter than the second conduit and concentrically surrounding and slideably attached to said second conduit; a first stop means attached to the outside of the second conduit at the lower portion thereof; a second stop means attached inside the upper portion of the third conduit, said second stop means being positioned so that the two stop means come into registry when the second and third conduits are extended with reference to one another; reversible actuating means, operably connected to said lever and said third conduit, for first extending said third conduit and then opening said valve when actuated in a first direction, and for first closing said valve and then retracting said third conduit when actuated in a second direction opposite said first direction.
Claim 3
Dependent Claim
14 words
The apparatus of claim 1 in which the actuating means is an air cylinder.
Claim 4
Dependent Claim
37 words
The apparatus of claim 2 in which the position of one of said stop means is vertically adjustable with respect to the conduit carrying said one stop means to vary the distance between the two stop means.
Claim 5
Dependent Claim
17 words
The apparatus of claim 2 in which the third conduit includes means for varying the weight thereof.
Claim 6
Dependent Claim
37 words
The apparatus of claim 1 in which the position of one of said stop means is vertically adjustable with respect to the conduit carrying said one stop means to vary the distance between the two stop means.
Claim 7
Dependent Claim
17 words
The apparatus of claim 5 in which the third conduit includes means for varying the weight thereof.
Claim 8
Dependent Claim
17 words
The apparatus of claim 1 in which the third conduit includes means for varying the weight thereof.
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) | 1977-04-15 | 1977-10-15 | 1978-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-15 | 1981-10-15 | 1982-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-15 | 1985-10-15 | 1986-04-16 | $7700.00 | Window Closed / Lapsed |