Patent US6940386B2 successfully refreshed from Google Patents.
US3869733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi level holding tank discharge system
Assignee: Individual
•
Filing: 1973-06-04
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Granted: 1975-03-11
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Expires: 1993-06-04
Abstract
Abstract A mechanism adapted to installation in most standard type holding tanks such are used in water closet type toilet bowl flushing systems, chemical feed tanks, and similar installations, wherein a controlled quantity of any fluid, including but not limited to ordinary tap water, is released by raising a ball check valve from its seat on a discharge fitting and thus causing discharge of the entire contents of the holding tank through the discharge fitting. The addition of one flow through ball check valve seated on the discharge fitting, with the conventional ball check valve seated on an appropriate valve seat on top of the added flow through ball check valve, permits discharge of the volume of fluid above the added flow through ball check valve through a central opening therein, thus limiting the discharge to the volume of fluid above the top of the added flow through ball check valve. Release of the flow through ball check valve from its seat causes discharge of the contents of the holding tank down to the level of the valve seat on which the flow through valve seats. Additional flow through ball check valves, either identical with the first, or of various heights, with proper control means, will permit discharge of any predetermined quantity of fluid up to the maximum content of the holding tank as determined by filling and overflow controls of the system.
Inventors
- 👤 Chester A White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:44
CPC Classifications
E; E03; E03D; E03D1/00; E03D1/02; E03D1/14; E03D1/142; E03D1/145; E03D1/30; E03D1/34
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
361 words
A discharge system for a fluid holding tank such as is used on a water closet flushed toilet having a maximum fluid level control such as a float operated valve, a discharge fitting with a float valve seat and an associated vertical overflow pipe a short distance from the center of the discharge valve seat, a flow through ball check valve seating on the discharge fitting valve seat, the flow through ball check valve having a valve seat at the top of the flow through opening designed to accomodate another ball check valve; a conventional ball check valve seated on the valve seat at the top of the flow through ball check valve; the conventional ball check valve having a valve stem extending vertically upward on its axis and passing through a vertical guide hole in a valve stem guide attached as by clamping to the overflow pipe, the guide hole being concentric with the vertical axis of the discharge valve seat, thus controlling the upward and downward movement of that valve to cause it to seat properly when returning to the discharge valve seat; means for selectively raising the top ball check valve from the discharge seat on the top of the flow through ball check valve thus limiting the discharge to the level of the discharge valve seat on the top of the flow through ball check valve; and means for raising the flow through ball check valve and the ball check valve seated on the discharge valve seat on the top thereof, and permitting discharge of the entire contents of the holding tank; wherein the improvement comprises: means for controlling the upward and downward movement of the flow through ball check valve, so as to cause it to seat properly when returning to its seat, comprising: the valve stem guide having, spaced symetrically about the axis of the discharge valve seat, a pair of vertical guide holes for valve stems of the flow through ball check valve; the flow through ball check valve having two valve stems located symetrically about its vertical axis and extending vertically upward through the guide holes provided therefor in the valve stem guide.
Claim 2
Dependent Claim
361 words
A discharge system for a fluid holding tank such as is used on a water closet flushed toilet having a maximum fluid level control such as a float operated valve, a discharge fitting with a float valve seat and an associated vertical overflow pipe a short distance from the center of the discharge valve seat, a flow through ball check valve seating on the discharge fitting valve seat, the flow through ball check valve having a valve seat at the top of the flow through opening designed to accomodate another ball check valve; a conventional ball check valve seated on the valve seat at the top of the flow through ball check valve; the conventional ball check valve having a valve stem extending vertically upward on its axis and passing through a vertical guide hole in a valve stem guide attached as by clamping to the overflow pipe, the guide hole being concentric with the vertical axis of the discharge valve seat, thus controlling the upward and downward movement of that valve to cause it to seat properly when returning to the discharge valve seat; means for selectively raising the top ball check valve from the discharge seat on the top of the flow through ball check valve thus limiting the discharge to the level of the discharge valve seat on the top of the flow through ball check valve; and means for raising the flow through ball check valve and the ball check valve seated on the discharge valve seat on the top thereof, and permitting discharge of the entire contents of the holding tank; wherein the improvement comprises: means for controlling the upward and downward movement of the flow through ball check valve, so as to cause it to seat properly when returning to its seat, comprising: the valve stem guide having, spaced symetrically about the axis of the discharge valve seat, a pair of vertical guide holes for valve stems of the flow through ball check valve; the flow through ball check valve having two valve stems located symetrically about its vertical axis and extending vertically upward through the guide holes provided therefor in the valve stem guide.
Claim 3
Dependent Claim
361 words
A discharge system for a fluid holding tank such as is used on a water closet flushed toilet having a maximum fluid level control such as a float operated valve, a discharge fitting with a float valve seat and an associated vertical overflow pipe a short distance from the center of the discharge valve seat, a flow through ball check valve seating on the discharge fitting valve seat, the flow through ball check valve having a valve seat at the top of the flow through opening designed to accomodate another ball check valve; a conventional ball check valve seated on the valve seat at the top of the flow through ball check valve; the conventional ball check valve having a valve stem extending vertically upward on its axis and passing through a vertical guide hole in a valve stem guide attached as by clamping to the overflow pipe, the guide hole being concentric with the vertical axis of the discharge valve seat, thus controlling the upward and downward movement of that valve to cause it to seat properly when returning to the discharge valve seat; means for selectively raising the top ball check valve from the discharge seat on the top of the flow through ball check valve thus limiting the discharge to the level of the discharge valve seat on the top of the flow through ball check valve; and means for raising the flow through ball check valve and the ball check valve seated on the discharge valve seat on the top thereof, and permitting discharge of the entire contents of the holding tank; wherein the improvement comprises: means for controlling the upward and downward movement of the flow through ball check valve, so as to cause it to seat properly when returning to its seat, comprising: the valve stem guide having, spaced symetrically about the axis of the discharge valve seat, a pair of vertical guide holes for valve stems of the flow through ball check valve; the flow through ball check valve having two valve stems located symetrically about its vertical axis and extending vertically upward through the guide holes provided therefor in the valve stem guide.
Claim 4
Dependent Claim
361 words
A discharge system for a fluid holding tank such as is used on a water closet flushed toilet having a maximum fluid level control such as a float operated valve, a discharge fitting with a float valve seat and an associated vertical overflow pipe a short distance from the center of the discharge valve seat, a flow through ball check valve seating on the discharge fitting valve seat, the flow through ball check valve having a valve seat at the top of the flow through opening designed to accomodate another ball check valve; a conventional ball check valve seated on the valve seat at the top of the flow through ball check valve; the conventional ball check valve having a valve stem extending vertically upward on its axis and passing through a vertical guide hole in a valve stem guide attached as by clamping to the overflow pipe, the guide hole being concentric with the vertical axis of the discharge valve seat, thus controlling the upward and downward movement of that valve to cause it to seat properly when returning to the discharge valve seat; means for selectively raising the top ball check valve from the discharge seat on the top of the flow through ball check valve thus limiting the discharge to the level of the discharge valve seat on the top of the flow through ball check valve; and means for raising the flow through ball check valve and the ball check valve seated on the discharge valve seat on the top thereof, and permitting discharge of the entire contents of the holding tank; wherein the improvement comprises: means for controlling the upward and downward movement of the flow through ball check valve, so as to cause it to seat properly when returning to its seat, comprising: the valve stem guide having, spaced symetrically about the axis of the discharge valve seat, a pair of vertical guide holes for valve stems of the flow through ball check valve; the flow through ball check valve having two valve stems located symetrically about its vertical axis and extending vertically upward through the guide holes provided therefor in the valve stem guide.
References Cited (Backward Citations)
US3005206A
Cited
US3151337A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |