US3829059A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic valve adapter
Assignee: Dial Industries Inc
•
Filing: 1973-06-08
•
Granted: 1974-08-13
•
Expires: 1993-06-08
Abstract
Abstract An adapter attachable to a valve body having an inlet port and an outlet, and including a housing provided with an operating chamber; a piston in the chamber having a larger diameter than the inlet port and provided with a lower closure member sealable with said inlet port, and a spring biasing the piston toward sealing position; an inlet passage through the piston from the inlet port to the operating chamber; pilot valve means for bleeding liquid from the operating chamber to permit inlet water pressure to force the piston closure member upwardly away from the inlet port thus opening the main valve. The pilot valve is desirably solenoid operated, and manual override pilot valve means are provided, which may be incorporated in the solenoid. A washer shiftably mounted in the piston has an aperture constituting an orifice in the piston inlet passage. A control rod fixed to the housing projects through the orifice to restrict liquid flow therethrough, and has a portion of enlarged section which enters the orifice as the closure member approaches valve closed position, in order to gently close the valve and thus avoid water hammer in the system. A spring wire bail serves during assembly to retain the piston in the housing against the force of the spring. Throttle means limit the upward of opening movement of the piston and closure member.
Inventors
- 👤 W Rupert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:41
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/36; F16K31/40; F16K31/406; A; A01; A01G; A01G25/00; A01G25/16; A01G25/165; F16K21/00; F16K21/04; F16K21/16; Y; Y10; Y10T; Y10T137/00; Y10T137/598; Y10T137/6089
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
267 words
An automatic valve adapter for converting a manual water system to an automatic water system, said manual water system including a valve body with a chamber, a lower inlet port for supplying water under pressure into the chamber and a peripheral valve seat therearound, an open outlet from the chamber and a housing receiving opening in the valve body, said adapter comprising: a housing in said housing receiving opening, said housing having a piston receiving cylinder: a movable piston in said cylinder, said piston having a lower surface located over said valve seat, and having an opposite surface which together with the housing defines an operating chamber; a seal on said lower surface, said piston being movable within said cylinder between a closed position wherein said seal engages the valve seat to block the flow of water through the inlet port, and an open position wherein said seal is spaced from the valve seat; an inlet passage communicating said operating chamber with said inlert port, including means for increasingly restricting liquid flow through the inlet passage as the piston approaches its closed position, to thereby slow the movement of the piston; a vent passage bleeding said operating chamber to said outlet to allow water to flow from said operating chamber to said outlet; and selectively operable closure means selectively closing said vent passage to prevent the bleeding of water from the operating chamber whereby the water flowing into the operating chamber from the inlet passage is trapped therein and acts on the upper surface of the piston to move the piston and seal to the closed position.
Claim 2
Dependent Claim
267 words
An automatic valve adapter for converting a manual water system to an automatic water system, said manual water system including a valve body with a chamber, a lower inlet port for supplying water under pressure into the chamber and a peripheral valve seat therearound, an open outlet from the chamber and a housing receiving opening in the valve body, said adapter comprising: a housing in said housing receiving opening, said housing having a piston receiving cylinder: a movable piston in said cylinder, said piston having a lower surface located over said valve seat, and having an opposite surface which together with the housing defines an operating chamber; a seal on said lower surface, said piston being movable within said cylinder between a closed position wherein said seal engages the valve seat to block the flow of water through the inlet port, and an open position wherein said seal is spaced from the valve seat; an inlet passage communicating said operating chamber with said inlert port, including means for increasingly restricting liquid flow through the inlet passage as the piston approaches its closed position, to thereby slow the movement of the piston; a vent passage bleeding said operating chamber to said outlet to allow water to flow from said operating chamber to said outlet; and selectively operable closure means selectively closing said vent passage to prevent the bleeding of water from the operating chamber whereby the water flowing into the operating chamber from the inlet passage is trapped therein and acts on the upper surface of the piston to move the piston and seal to the closed position.
Claim 3
Dependent Claim
48 words
The adapter as defined in claim 1 wherein the selectively operable closure means includes a seat surrounding said vent passage, a solenoid mounted in the housing, and a plunger located in the solenoid and aligned with the seat for selectively engaging the seat to close the vent passage.
Claim 4
Dependent Claim
30 words
The adapter as defined in claim 2 additionally comprising a manual override means for venting the operating chamber and thereby permitting the piston to be moved to the open position.
Claim 5
Dependent Claim
21 words
The adapter as defined in claim 3 wherein the manual override means is in parallel with the selectively operable closure means.
Claim 6
Dependent Claim
207 words
In a valve having a valve body provided with a lower chamber, a lower inlet port communicating the chamber with a source of pressurized liquid and an outlet, housing means forming a cylinder communicating downwardly with said lower chamber, a piston movably mounted within the cylinder and defining an operating chamber in the cylinder above the piston, the piston having mounted thereon a lower seal axially aligned with the inlet port for selectively opening and closing said inlet port in accordance with longitudinal piston movement, and an inlet passage formed through the piston and seal for communicating pressure liquid from the inlet port to the operating chamber, and means for selectively trapping liquid in or bleeding liquid from the operating chamber to said outlet, the provision of means for restricting the effective cross-sectional area of the inlet passage comprising: a control port formed in the piston and constituting a portion of the inlet passage; means forming a Cavity in said control port; a member having a control hole therein housed in the cavity and permitted limited shiftable movement therein; and a control rod fixed to the housing means and projecting downwardly generally parallel to the axis of piston movement through said hole for restricting liquid flow therethrough.
Claim 7
Dependent Claim
207 words
In a valve having a valve body provided with a lower chamber, a lower inlet port communicating the chamber with a source of pressurized liquid and an outlet, housing means forming a cylinder communicating downwardly with said lower chamber, a piston movably mounted within the cylinder and defining an operating chamber in the cylinder above the piston, the piston having mounted thereon a lower seal axially aligned with the inlet port for selectively opening and closing said inlet port in accordance with longitudinal piston movement, and an inlet passage formed through the piston and seal for communicating pressure liquid from the inlet port to the operating chamber, and means for selectively trapping liquid in or bleeding liquid from the operating chamber to said outlet, the provision of means for restricting the effective cross-sectional area of the inlet passage comprising: a control port formed in the piston and constituting a portion of the inlet passage; means forming a Cavity in said control port; a member having a control hole therein housed in the cavity and permitted limited shiftable movement therein; and a control rod fixed to the housing means and projecting downwardly generally parallel to the axis of piston movement through said hole for restricting liquid flow therethrough.
Claim 8
Dependent Claim
57 words
The invention as defined in claim 5 wherein the effective cross-sectional area of the portion of the control rod in the control hole is greater when the piston and seal are approaching their lower positions for closing the inlet port than when the piston and seal are in their upper positions corresponding to inlet port open condition.
Claim 9
Dependent Claim
125 words
A solenoid for assembly with a housing having a fluid filled chamber and an outlet port for bleeding the chamber, comprising: a case assemblable with the housing and having a central bore in fluid communication with the chamber; an elongated plunger longitudinally movable in the bore; a closure member carried at one end of the plunger and resilient means biasing the plunger longitudinally of the bore toward a position in which the closure member closes the port; an operating coil in the case and coaxially surrounding the bore, energization of the coil serving to move the plunger against the force of the resilient means and thereby to open the port; and manual override means carried by the case for selectively bleeding fluid from said bore.
Claim 10
Dependent Claim
125 words
A solenoid for assembly with a housing having a fluid filled chamber and an outlet port for bleeding the chamber, comprising: a case assemblable with the housing and having a central bore in fluid communication with the chamber; an elongated plunger longitudinally movable in the bore; a closure member carried at one end of the plunger and resilient means biasing the plunger longitudinally of the bore toward a position in which the closure member closes the port; an operating coil in the case and coaxially surrounding the bore, energization of the coil serving to move the plunger against the force of the resilient means and thereby to open the port; and manual override means carried by the case for selectively bleeding fluid from said bore.
Claim 11
Dependent Claim
20 words
The invention as defined in claim 7 wherein opposite ends of the bore are in fluid communication with one another.
Claim 12
Dependent Claim
20 words
The invention as defined in claim 8 wherein the plunger has a cross-sectional area less than that of the bore.
Claim 13
Dependent Claim
25 words
The invention as defined in claim 8 wherein said manually operable means is disposed at the end of said case opposite to said outlet port.
References Cited (Backward Citations)
US2694544A
Cited
US2882006A
Cited
US3065885A
Cited
US3279743A
Cited
US3472268A
Cited
US3735772A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-12 | 1978-02-11 | 1978-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-12 | 1982-02-11 | 1982-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-12 | 1986-02-11 | 1986-08-13 | $7700.00 | Window Closed / Lapsed |