US3784154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water valve diaphragm
Assignee: Eaton Corp
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Filing: 1970-10-12
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Granted: 1974-01-08
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Expires: 1990-10-12
Abstract
Abstract The rigid, plastic insert molded into the diaphragm has a raised seat against which the soft tip, solenoid plunger seats with no need for critical registry, thus allowing greater clearance between the plunger and guide. The insert includes a depending boss which cooperates with the outlet to throttle flow during closure to reduce water hammer. The necessary bleed hole is in the insert for greater precision and uniformity of operation. The diaphragm material is molded to include a spacer preventing seating the bleed hole against the cup-like portion of the guide with consequent inability to close.
Inventors
- 👤 E Ostrowski
- 👤 Lew C De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:39
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/36; F16K31/40; F16K31/402; F16K31/404
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
182 words
A diaphragm-type, solenoid-operated valve comprising: a valve body having an annular inlet and an outlet centrally located relative to the inlet, a diaphragm mounted in the body overlying both the inlet and the outlet, a valve seat between the inlet and outlet, said diaphragm being adapted to close on said seat, a rigid insert molded in the diaphragm to be permanently locked therein and having a central orifice therethrough, a bleed hole in said insert allowing liquid flow from the inlet to the space above the diaphragm, the central orifice in said insert being larger than the bleed hole so that when the orifice is open liquid can flow from the space above the diaphragm faster than it can be replenished by flow through the bleed hole, a solenoid assembly including a watertight plunger guide and a coil, a plunger slidable in the plunger guide and actuated by energization of the coil, the end of the plunger having a resilient face closing on the central orifice in said insert and adapted to move from the central orifice when the coil is energized.
Claim 2
Dependent Claim
182 words
A diaphragm-type, solenoid-operated valve comprising: a valve body having an annular inlet and an outlet centrally located relative to the inlet, a diaphragm mounted in the body overlying both the inlet and the outlet, a valve seat between the inlet and outlet, said diaphragm being adapted to close on said seat, a rigid insert molded in the diaphragm to be permanently locked therein and having a central orifice therethrough, a bleed hole in said insert allowing liquid flow from the inlet to the space above the diaphragm, the central orifice in said insert being larger than the bleed hole so that when the orifice is open liquid can flow from the space above the diaphragm faster than it can be replenished by flow through the bleed hole, a solenoid assembly including a watertight plunger guide and a coil, a plunger slidable in the plunger guide and actuated by energization of the coil, the end of the plunger having a resilient face closing on the central orifice in said insert and adapted to move from the central orifice when the coil is energized.
Claim 3
Dependent Claim
25 words
A valve according to claim 1 in which the insert has a raised conical seat surrounding the orifice facing the resilient tip of the plunger.
Claim 4
Dependent Claim
47 words
A valve according to claim 1 in which the plunger guide has a belled end facing the diaphragm to accommodate diaphragm flexure and the upper side of the diaphragm includes a raised boss preventing the bleed hole from seating on the belled end and being blocked off.
Claim 5
Dependent Claim
46 words
A valve according to claim 1 in which the insert is a rigid plastic having a depending cylindrical boss projecting into the outlet when the diaphragm is closed on said seat and acting to throttle the flow to the outlet as the diaphragm approaches said seat.
Claim 6
Dependent Claim
38 words
A valve according to claim 1 in which the rigid insert has holes therethrough through which the diaphragm material flows during molding the diaphragm on the insert so that the insert is positively fixed relative to the diaphragm.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |