US3838706A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conduit closure
Assignee: Individual
•
Filing: 1973-05-07
•
Granted: 1974-10-01
•
Expires: 1993-05-07
Abstract
Abstract A conduit has an upper and a lower open end. A sealing ring surrounds the conduit exteriorly adjacent the lower open end, and a cover is mounted on the conduit to be located beneath the lower open end. The normally upwardly facing side of the cover is provided with a depression surrounded by an upstanding rim which is normally in engagement with the sealing ring. The depression is dimensioned to accommodate liquid entering through the upper open end, until the liquid reaches a certain level in the depression but below the lower open end of the conduit. A counterweight normally holds the cover in the position closing the lower open end of the conduit, but when the liquid reaches the aforementioned level the cover, which is pivotally mounted, pivots downwardly under the weight of the liquid in opposition to the counterweight, so that the lower open end of the conduit is opened and liquid which has accumulated in the depression of the cover is downwardly discharged.
Inventors
- 👤 A Klenk
- 👤 H Klenk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:07
CPC Classifications
E; E03; E03F; E03F5/00; E03F5/04; E03F5/0407; E03F2005/0416; E03F2005/0417; Y; Y10; Y10T; Y10T137/00; Y10T137/4456; Y10T137/4463; Y10T137/4471; Y10T137/4478; Y10T137/4493; Y10T137/7287; Y10T137/7339; Y10T137/7358; Y10T137/7423; Y10T137/7426; Y10T137/7436; Y10T137/7722; Y10T137/7837; Y10T137/7898; Y10T137/7902; Y10T137/7903
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
263 words
A one-way closure for discharge conduits comprising, in combination, a mounting element connected to the discharge conduit interiorly thereof and subdividing the same in an upper and a lower compartment; an elongated connecting conduit sealingly connected to said mounting element and having an upper end portion communicating with said upper compartment, a lower end portion communicating with said lower compartment, and an internal surface partially bounding a liquid-flow path between said upper and lower compartments; a cover mounted in said lower compartment for pivoting movement with respect to said connecting conduit between a closed position and a fully open position; biasing means connected with said cover and operative for biasing the same to said closed position with a force gradually diminishing from a maximum force in said closed position to a minimum force in said open position; a depression provided in said cover and adapted to accommodate a predetermined quantity of liquid therein when said cover is in said closed position thereof so as to establish a maximum liquid level in said depression at which the weight of said predetermined quantity of liquid outbalances said maximum force with attendant rapid movement of said cover into said open position thereof and discharge of said quantity of liquid; and a sealing ring arranged exteriorly of said lower end portion outside said fluid-flow path and above said predetermined level and sealingly engaging said cover when in said closed position thereof, whereby said compartments are sealingly separated as long as said cover is in the latter position, and the liquid is prevented from contacting said sealing ring.
Claim 2
Dependent Claim
263 words
A one-way closure for discharge conduits comprising, in combination, a mounting element connected to the discharge conduit interiorly thereof and subdividing the same in an upper and a lower compartment; an elongated connecting conduit sealingly connected to said mounting element and having an upper end portion communicating with said upper compartment, a lower end portion communicating with said lower compartment, and an internal surface partially bounding a liquid-flow path between said upper and lower compartments; a cover mounted in said lower compartment for pivoting movement with respect to said connecting conduit between a closed position and a fully open position; biasing means connected with said cover and operative for biasing the same to said closed position with a force gradually diminishing from a maximum force in said closed position to a minimum force in said open position; a depression provided in said cover and adapted to accommodate a predetermined quantity of liquid therein when said cover is in said closed position thereof so as to establish a maximum liquid level in said depression at which the weight of said predetermined quantity of liquid outbalances said maximum force with attendant rapid movement of said cover into said open position thereof and discharge of said quantity of liquid; and a sealing ring arranged exteriorly of said lower end portion outside said fluid-flow path and above said predetermined level and sealingly engaging said cover when in said closed position thereof, whereby said compartments are sealingly separated as long as said cover is in the latter position, and the liquid is prevented from contacting said sealing ring.
Claim 3
Dependent Claim
14 words
A combination as defined in claim 1, wherein said biasing means comprises a counterweight.
Claim 4
Dependent Claim
29 words
A combination as defined in claim 2, comprising mounting means including a pivot member connected with said cover at one side of said connecting conduit, exteriorly of the latter.
Claim 5
Dependent Claim
38 words
A combination as defined in claim 3, wherein said mounting means defines a pivot axis; and wherein the configuration of said cover in a vertical cross-section extending substantially normal through said pivot axis is hollow and substantially rectangular.
Claim 6
Dependent Claim
38 words
A combination as defined in claim 3, wherein said mounting means defines a pivot axis; and wherein the configuration of said cover in a vertical cross-section extending substantially normal through said pivot axis is hollow and substantially trapezoidal.
Claim 7
Dependent Claim
33 words
A combination as defined in claim 3, wherein said cover, pivot member and biasing means are located in a substantially horizontal plane common to them, when said cover is in said closed position.
Claim 8
Dependent Claim
20 words
A combination as defined in claim 3, wheRein said mounting means mounts said cover for pivotal displacement through substantially 90*.
Claim 9
Dependent Claim
42 words
A combination as defined in claim 3, wherein said depression is partly defined by a major surface which is inclined in upward direction from said one to the opposite side of said connecting conduit when said cover is in said closed position.
Claim 10
Dependent Claim
45 words
A combination as defined in claim 1, said cover having a lower side which faces downwardly away from said lower end portion when said cover is in said closed position; and wherein said cover is provided with a sealed air chamber at said lower side.
Claim 11
Dependent Claim
27 words
A combination as defined in claim 1, wherein said sealing ring is upwardly spaced from a lower edge bounding said lower end portion of said connecting conduit.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-30 | 1978-04-01 | 1978-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-30 | 1982-04-01 | 1982-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-30 | 1986-04-01 | 1986-10-01 | $7700.00 | Window Closed / Lapsed |