US3658083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flush bottom tank valve
Assignee: Individual
•
Filing: 1971-01-06
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Granted: 1972-04-25
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Expires: 1991-01-06
Abstract
Abstract A flush tank valve having a plunger and two converging passages. One passage is vertical and the plunger operates in it and the other passage goes off to the side and handles the discharge. The plunger opens by withdrawal beyond the discharge passage. The plunger has a packing moving with the plunger and spring compressed so that in closed position it engages the wall of the body close to the upper end of the valve, but in opening position it engages the wall of the body beyond the branching of the Y. There is gland a packing glad sealing the lower end of the plunger and compressed by spring means, acting between the plunger and an enlarged portion of the body and entirely independent in its operating parts from the packing at the upper end of the plunger. A scraper ring is preferably employed ahead of the packing on the plunger to remove material adhering to the inside wall of the body.
Inventors
- 👤 John S Fetterolf
- 👤 James W Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:15
CPC Classifications
F; F16; F16K; F16K29/00; F16K27/00; F16K27/07; Y; Y10; Y10T; Y10T137/00; Y10T137/4238; Y10T137/4245; Y10T137/4273; Y10T137/4336
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
203 words
In a flush bottom tank valve, an inverted Y-shaped body having a depending portion adapted to surround a plunger, having an upper inside portion adapted to cooperate with an upper seal ring to make a seal, having an enlarged lower portion adapted to cooperate with a lower packing to make a seal and having a side outlet, a plunger body operating in the depending portion, a plunger upper head extending within the body and having an enlarged portion at the upper end, a seal ring between the enlarged portion of the plunger upper head and the upper end of the plunger body sealing when closed on the inside of the body, spring means urging the plunger upper head and the plunger body into telescoping relationship with respect to the seal ring, a plunger lower head on the lower end of the plunger body having a female thread therein, a threaded valve stem extending into the plunger lower head to manipulate the plunger, a packing gland extending between the enlarged portion of the body and the plunger lower head and plunger, spring means for compressing the packing gland and a gland packing in the space defined by the body, the gland and the plunger.
Claim 2
Dependent Claim
203 words
In a flush bottom tank valve, an inverted Y-shaped body having a depending portion adapted to surround a plunger, having an upper inside portion adapted to cooperate with an upper seal ring to make a seal, having an enlarged lower portion adapted to cooperate with a lower packing to make a seal and having a side outlet, a plunger body operating in the depending portion, a plunger upper head extending within the body and having an enlarged portion at the upper end, a seal ring between the enlarged portion of the plunger upper head and the upper end of the plunger body sealing when closed on the inside of the body, spring means urging the plunger upper head and the plunger body into telescoping relationship with respect to the seal ring, a plunger lower head on the lower end of the plunger body having a female thread therein, a threaded valve stem extending into the plunger lower head to manipulate the plunger, a packing gland extending between the enlarged portion of the body and the plunger lower head and plunger, spring means for compressing the packing gland and a gland packing in the space defined by the body, the gland and the plunger.
Claim 3
Dependent Claim
37 words
A valve of claim 1, in combination with a scraper ring acting between the upper plunger head and the seal ring on the inside of the body to clean the body when the valve must be manipulated.
Claim 4
Dependent Claim
26 words
A valve of claim 1, in combination with a shoulder on the lower plunger head bringing pressure on the packing gland when the valve is closed.
Claim 5
Dependent Claim
91 words
In a flush bottom tank valve, a body having a depending bore and an inverted Y-shaped outlet, a plunger riding in the bore, a seal ring carried by the plunger and in closed position of the valve sealing on the bore and in open position of the valve withdrawing with the plunger beyond the branching in the Y, means for compressing the seal ring, packing operating on the lower end of the plunger to seal it and means for compressing the packing independently of the means for compressing the seal ring.
Claim 6
Dependent Claim
91 words
In a flush bottom tank valve, a body having a depending bore and an inverted Y-shaped outlet, a plunger riding in the bore, a seal ring carried by the plunger and in closed position of the valve sealing on the bore and in open position of the valve withdrawing with the plunger beyond the branching in the Y, means for compressing the seal ring, packing operating on the lower end of the plunger to seal it and means for compressing the packing independently of the means for compressing the seal ring.
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) | 1975-04-25 | 1975-10-25 | 1976-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-25 | 1979-10-25 | 1980-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-25 | 1983-10-25 | 1984-04-25 | $7700.00 | Window Closed / Lapsed |