US4094786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment control apparatus for water systems
Assignee: Individual
•
Filing: 1977-10-11
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Granted: 1978-06-13
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Expires: 1997-10-11
Abstract
Abstract The disclosed control apparatus for water treatment systems embodies a float switch actuably responsive to a predetermined drop in stored water level causing the pumping of treatment solution to a predetermined rate of flow controlled by a flow orifice for a predetermined period of time when called for by a thus energized clock totalizer embodying cam mechanism therein and a sensitive switch responsive thereto for controlling the flow of treatment solution to the water reservoir proportional to the delivery of make up water controlled by the float switch.
Inventors
- 👤 John R. Bury
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:39
CPC Classifications
G; G05; G05D; G05D11/00; G05D11/02; G05D11/13; G05D11/131; G05D11/132; C; C02; C02F; C02F1/00; C02F1/008; C02F1/68; C02F1/685; C02F1/686; C02F2209/00; C02F2209/42; C02F2209/44
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
272 words
A system for introducing an accurate quantity of treating solution into a water reservoir to which make up water is added responsive to a predetermined drop in head, said water being added through a control orifice at a predetermined pressure at a constant rate of flow, and comprising in combination: a tank in liquid communication with said reservoir the liquid level in said tank corresponding to the liquid level in said reservoir; a normally open liquid level responsive first electrical switch closable upon a drop in liquid level in said tank corresponding to a predetermined drop in head in said reservoir; means for pumping make-up water at a predetermined rate of flow to said reservoir responsive to closure of said switch; a totalizer device including a clock type motor electrically actuated responsive to closure of said switch; totalizer mechanism associated with said motor and driven thereby, said mechanism defining totalizing cycles responsive to a predetermined time base determined by said motor and responsive to the volume of make-up water delivered to said reservoir through said control orifice; a second normally open electrical switch associated with said totalizing mechanism actuably closable thereby over a predetermined portion only of a cycle thereof; a treating solution container and a second electrically actuated pump of constant pressure characteristic for delivering treating solution from said container to said reservoir; a second control orifice for said treating solution between said second pump and said reservoir; means for actuating said second pump responsive to closure of said second switch; and means for maintaining such float switch closed until the water level in said reservoir rises to a predetermined level.
Claim 2
Independent Claim
272 words
A system for introducing an accurate quantity of treating solution into a water reservoir to which make up water is added responsive to a predetermined drop in head, said water being added through a control orifice at a predetermined pressure at a constant rate of flow, and comprising in combination: a tank in liquid communication with said reservoir the liquid level in said tank corresponding to the liquid level in said reservoir; a normally open liquid level responsive first electrical switch closable upon a drop in liquid level in said tank corresponding to a predetermined drop in head in said reservoir; means for pumping make-up water at a predetermined rate of flow to said reservoir responsive to closure of said switch; a totalizer device including a clock type motor electrically actuated responsive to closure of said switch; totalizer mechanism associated with said motor and driven thereby, said mechanism defining totalizing cycles responsive to a predetermined time base determined by said motor and responsive to the volume of make-up water delivered to said reservoir through said control orifice; a second normally open electrical switch associated with said totalizing mechanism actuably closable thereby over a predetermined portion only of a cycle thereof; a treating solution container and a second electrically actuated pump of constant pressure characteristic for delivering treating solution from said container to said reservoir; a second control orifice for said treating solution between said second pump and said reservoir; means for actuating said second pump responsive to closure of said second switch; and means for maintaining such float switch closed until the water level in said reservoir rises to a predetermined level.
Claim 3
Dependent Claim
20 words
The system of claim 1 and a check valve device associated with said second pump for maintaining the priming thereof.
Claim 4
Dependent Claim
16 words
The system of claim 1 in which said first switch is of the mercury switch type.
Claim 5
Dependent Claim
64 words
The system of claim 1 in which the liquid level responsive first electrical switch comprises a mercury switch, a float arm for tilting said switch and a lost motion mechanism between said float device and said switch for maintaining closure of said switch once actuated by a predetermined drop in liquid level until the water level rises to a predetermined head in said tank.
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) | 1981-06-12 | 1981-12-12 | 1982-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-12 | 1985-12-12 | 1986-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-12 | 1989-12-12 | 1990-06-13 | $7700.00 | Window Closed / Lapsed |