Patent US3817264A successfully refreshed from Google Patents.
US3817264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve
Assignee: HELLER FINANCIAL Inc A DE CORP
•
Filing: 1973-02-14
•
Granted: 1974-06-18
•
Expires: 1993-02-14
Abstract
Abstract A valve for passing a first fluid in response to the pressure of a second fluid comprising a body having first fluid inlet and outlet ports connected by an internal fluid passage, a second fluid inlet port, and first and second internal chambers; a first flexible diaphragm mounted on the body and dividing the first chamber into separate first and second portions, the former portion communicating with the second fluid inlet port; a second flexible diaphragm mounted in the second chamber; a movable rigid connector extending between the diaphragms; and passage sealing means in the internal fluid passage including structure disposed to engage the second diaphragm, whereby movement of that diaphragm is operative to seal the passage.
Inventors
- 👤 E Kilayko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:40
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/126; F16K31/1268; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2564
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
221 words
A system for mixing separate fluids comprising an eductor assembly and a valve for passing a first fluid through a first fluid line to said assembly in response to pressure in a second fluid line, said second line being directly connected to said assembly, said valve comprising a body having first fluid inlet and outlet ports connected by an internal fluid passage, a second fluid inlet port connected to said second line and first and second internal chambers, a first flexible diaphragm mounted on said body and dividing said first chamber into separate first and second portions, said first portion communicating with said second fluid inlet port, a second flexible diaphragm mounted on said body and in said second chamber, a free floating rigid connector extending between said diaphragms, a vent passage connecting the space between said diaphragms with the exterior of the valve, passage sealing means in said internal fluid passage including structure disposed to engage said second diaphragm, whereby movement of said second diaphragm is operative to open said passage, biasing means which bias said first flexible diaphragm in a direction away from said rigid connector, each said diaphragm comprising a unitary rubber disc having a thick central portion and a thinner peripheral portion, each disc being clamped by said body around the entire peripheral portion of the disc.
Claim 2
Independent Claim
221 words
A system for mixing separate fluids comprising an eductor assembly and a valve for passing a first fluid through a first fluid line to said assembly in response to pressure in a second fluid line, said second line being directly connected to said assembly, said valve comprising a body having first fluid inlet and outlet ports connected by an internal fluid passage, a second fluid inlet port connected to said second line and first and second internal chambers, a first flexible diaphragm mounted on said body and dividing said first chamber into separate first and second portions, said first portion communicating with said second fluid inlet port, a second flexible diaphragm mounted on said body and in said second chamber, a free floating rigid connector extending between said diaphragms, a vent passage connecting the space between said diaphragms with the exterior of the valve, passage sealing means in said internal fluid passage including structure disposed to engage said second diaphragm, whereby movement of said second diaphragm is operative to open said passage, biasing means which bias said first flexible diaphragm in a direction away from said rigid connector, each said diaphragm comprising a unitary rubber disc having a thick central portion and a thinner peripheral portion, each disc being clamped by said body around the entire peripheral portion of the disc.
References Cited (Backward Citations)
US1473303A
Cited
US1921551A
Cited
US2416161A
Cited
US2683580A
Cited
FR1093901A
Cited
US3076477A
Cited
US3187764A
Cited
US3218824A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-17 | 1977-12-17 | 1978-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-17 | 1981-12-17 | 1982-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-17 | 1985-12-17 | 1986-06-18 | $7700.00 | Window Closed / Lapsed |