US4002184A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water flow actuated air charging device
Assignee: Individual
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Filing: 1975-09-02
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Granted: 1977-01-11
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Expires: 1995-09-02
Abstract
Abstract An air charging device is connected to a supply tank, a pump and a use facility, such as a faucet. When the faucet is opened, water flow from the tank through the device to the faucet charges a chamber in the device with air; while when the pump is actuated, water flow from the pump through the device to the tank causes the air in the chamber to be compressed and escape into the tank. The flow of water in either of two directions causes a freely movable valve member to engage and shift a plunger. Movement of the plunger in one direction causes intake of air into the chamber, and movement thereof in the other direction causes compression and discharge of air into the supply tank.
Inventors
- 👤 Howard A. Tubbs
- 👤 Donald M. Waltz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:28
CPC Classifications
F; F04; F04B; F04B9/00; F04B9/08; F04B9/10; F04B9/103; F01; F01L; F01L21/00; F01L21/04; F03; F03C; F03C1/00; F03C1/007; F03C1/0073; F03C1/0076; F04B35/00; F04B39/00; F04B39/0005; F04B39/0016; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3115; Y10T137/3127; Y10T137/313; Y10T137/3133
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
160 words
In a fluid pressure system, the combination comprising: a. a tank for storing liquid under pressure, b. a pump for supplying liquid to said tank, c. a first liquid conduit connected to said pump and with said conduit having a use facility valve connected thereto, d. a second liquid conduit connected to said tank, e. and automatic air charging means connected between said first and second conduits, said air charging means comprising: 1. an elongated housing providing inner and outer chambers and with said inner chamber being connected through said first conduit to said tank, 2. a one way air valve connected to the outer end portion of said outer chamber, 3. a plunger disposed for longitudinal sliding movement in said housing and extending between said chambers, the interior of said plunger providing a connection for liquid flow through said second conduit, 4. longitudinally spaced inner and outer valve seat means disposed within the inner end portion of said plunger,
Claim 2
Dependent Claim
160 words
In a fluid pressure system, the combination comprising: a. a tank for storing liquid under pressure, b. a pump for supplying liquid to said tank, c. a first liquid conduit connected to said pump and with said conduit having a use facility valve connected thereto, d. a second liquid conduit connected to said tank, e. and automatic air charging means connected between said first and second conduits, said air charging means comprising: 1. an elongated housing providing inner and outer chambers and with said inner chamber being connected through said first conduit to said tank, 2. a one way air valve connected to the outer end portion of said outer chamber, 3. a plunger disposed for longitudinal sliding movement in said housing and extending between said chambers, the interior of said plunger providing a connection for liquid flow through said second conduit, 4. longitudinally spaced inner and outer valve seat means disposed within the inner end portion of said plunger,
Claim 3
Dependent Claim
140 words
and a longitudinally movable valve member disposed in said inner end portion of said plunger and confined between said seat means and freely movable therebetween, 6. said valve member being movably responsive to liquid flow from said tank into said plunger toward said use facility valve when the latter is opened to thereby engage said inner seat means and move said plunger longitudinally inwardly so that air will be drawn into said outer chamber through said one way valve, 7. said valve member also being movably responsive to liquid flow from said pump into said plunger toward said tank when the pump is actuated to thereby engage said outer seat means and move said plunger longitudinally outwardly so that air in said outer chamber will be compressed and discharged into the liquid flowing into said tank through said second conduit.
Claim 4
Dependent Claim
140 words
and a longitudinally movable valve member disposed in said inner end portion of said plunger and confined between said seat means and freely movable therebetween, 6. said valve member being movably responsive to liquid flow from said tank into said plunger toward said use facility valve when the latter is opened to thereby engage said inner seat means and move said plunger longitudinally inwardly so that air will be drawn into said outer chamber through said one way valve, 7. said valve member also being movably responsive to liquid flow from said pump into said plunger toward said tank when the pump is actuated to thereby engage said outer seat means and move said plunger longitudinally outwardly so that air in said outer chamber will be compressed and discharged into the liquid flowing into said tank through said second conduit.
Claim 5
Dependent Claim
51 words
In the system of claim 1: a. sealing means disposed between the outer end portion of said plunger and the wall of said outer chamber, b. said sealing means being constructed to permit bypassing of compressed air therearound from said outer chamber into said inner chamber upon outward longitudinal plunger movement.
Claim 6
Dependent Claim
41 words
In the system of claim 1, longitudinally spaced stop means disposed in said inner chamber and with said stop means being engageable by said valve member during plunger movement to unseat said valve member from the respective inner or outer seat.
Claim 7
Dependent Claim
33 words
The system of claim 1 which includes; opening means disposed in the wall of the outer end portion of said plunger for providing the liquid flow connection between said first and second conduits.
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) | 1980-01-11 | 1980-07-12 | 1981-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-11 | 1984-07-12 | 1985-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-11 | 1988-07-12 | 1989-01-11 | $7700.00 | Window Closed / Lapsed |