Patent US3823736A successfully refreshed from Google Patents.
US3823736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetically operated valve
Assignee: SIRAI Srl
•
Filing: 1973-02-12
•
Granted: 1974-07-16
•
Expires: 1993-02-12
Abstract
Abstract An electromagnetically operated valve, comprising a movable assembly having at least a shiftable component carrying valve means to control passages between valve chambers. The movable assembly and the shiftable component are subjected to balanced axial thrusts due to pressure fluid in each operating position thereof.
Inventors
- 👤 L Vanti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:02
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; F16K31/06; F16K31/0686; F16K31/0693; F16K31/0603; F16K31/0624; F16K31/0634; F16K31/0637; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87169; Y10T137/87217
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
263 words
An electromagnetically operated valve for the control of high pressure fluids, said valve comprising: a valve body having cylindrical bore means extending completely therethrough; elongated valve component means positioned to slide within said cylindrical bore means; first chamber means formed between said valve body and a first end portion of said elongated valve component means; a first valve seat adjacent said first end portion of said elongated valve component means; second chamber means formed between said valve body and a second end portion of said elongated valve component means; a second valve seat adjacent said second end portion of said elongated valve component means; a first port connected to said first chamber means and to a source of pressure fluid; 1 a second port connected to said second chamber means and to an exhaust; a passage exterior of said cylindrical bore means connecting said first and second valve seats; a third port connected to said passage and to a consumer device; elastic means operable on one end portion of said elongated valve component means urging said elongated valve component means to a first position into contact with one of said first or second valve seats, thereby connecting said third port with one of said first or second ports; and electromagnetic valve controlling means operable on an opposite end portion of said elongated valve component means for selectively moving said elongated valve component means to a second position into contact with the other of said first or second valve seats, thereby connecting said third port with the other of said first or second ports.
Claim 2
Dependent Claim
263 words
An electromagnetically operated valve for the control of high pressure fluids, said valve comprising: a valve body having cylindrical bore means extending completely therethrough; elongated valve component means positioned to slide within said cylindrical bore means; first chamber means formed between said valve body and a first end portion of said elongated valve component means; a first valve seat adjacent said first end portion of said elongated valve component means; second chamber means formed between said valve body and a second end portion of said elongated valve component means; a second valve seat adjacent said second end portion of said elongated valve component means; a first port connected to said first chamber means and to a source of pressure fluid; 1 a second port connected to said second chamber means and to an exhaust; a passage exterior of said cylindrical bore means connecting said first and second valve seats; a third port connected to said passage and to a consumer device; elastic means operable on one end portion of said elongated valve component means urging said elongated valve component means to a first position into contact with one of said first or second valve seats, thereby connecting said third port with one of said first or second ports; and electromagnetic valve controlling means operable on an opposite end portion of said elongated valve component means for selectively moving said elongated valve component means to a second position into contact with the other of said first or second valve seats, thereby connecting said third port with the other of said first or second ports.
Claim 3
Dependent Claim
91 words
A valve as claimed in claim 1, wherein said cylindrical bore means comprises a single bore; and said elongated vAlve component means comprises a single component having a cylindrical mid-portion in sliding contact with said single bore, first and second reduced diameter sections extending from both ends of said mid-portion and in communication respectively with said first and second chamber means, and first and second valve contacting surfaces respectively at the remote ends of said first and second reduced diameter sections for contact respectively with said first and second valve seats.
Claim 4
Dependent Claim
110 words
A valve as claimed in claim 1, wherein said cylindrical bore means comprises first and second bores; said elongated valve component means comprises first and second components; said first component having a cylindrical lower end portion in sliding contact with said first bore, a reduced diameter mid-portion in communication with said first chamber means, and a valve contacting upper end portion for contact with said first valve seat; and said second component having a cylindrical upper end portion in sliding contact with said second bore, a reduced diameter mid-portion in communication with said second chamber means, and a valve contacting lower end portion for contact with said second valve seat.
Claim 5
Dependent Claim
54 words
A valve as claimed in claim 1, wherein said electromagnetic valve controlling means comprises a movable core, a coil surrounding said core, and spring means having a stiffness greater than said elastic means positioned between said core and said elongated valve component means for urging said elongated valve component means into said second position.
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) | 1977-07-15 | 1978-01-14 | 1978-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-15 | 1982-01-14 | 1982-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-15 | 1986-01-14 | 1986-07-16 | $7700.00 | Window Closed / Lapsed |