US3556139A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shutoff valve for hydraulic systems
Assignee: Individual
•
Filing: 1968-12-13
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Granted: 1971-01-19
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Expires: 1988-12-13
Abstract
Abstract A shutoff valve for a hydraulic system comprises a hermetic body having an inlet and an outlet for the medium handled by the system. Inside the body is a closing member adapted to open and close the outlet and an elongated pliable chamber with resilient walls is connected to the closing member. The chamber is supplied with a working medium, preferably a compressed gas under pressure and the chamber has an oval shape and is installed so that it acts on the closing member in the direction of the smaller axis of the chamber. The chamber may contain transmitters therein for indicating the position of the chamber walls in order to effect automatic control of the supply of the working medium into the chamber.
Inventors
- 👤 Nikolai Vasilievich Yalovega
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:57
CPC Classifications
F; F16; F16K; F16K7/00; F16K7/10; Y; Y10; Y10T; Y10T137/00; Y10T137/8158; Y10T137/8225; Y10T137/8242; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86622; Y10T137/8663; Y10T137/87169; Y10T137/87217; Y10T137/87225
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
108 words
A shutoff valve for hydraulic systems operating mostly with high temperature aggressive media comprising: a hermetic body installed in the hydraulic system; an inlet pipe connection of the hydraulic system connected to said body; an outlet pipe connection of the hydraulic system also connected to said body; a closing member installed in said body to open and close said outlet pipe connection; an elongated pliable chamber with resilient walls, and means for supplying said chamber with a working medium under pressure; the chamber having an oval shape and being installed so that it interacts with the closing member in the direction of the smaller axis of the chamber.
Claim 2
Dependent Claim
108 words
A shutoff valve for hydraulic systems operating mostly with high temperature aggressive media comprising: a hermetic body installed in the hydraulic system; an inlet pipe connection of the hydraulic system connected to said body; an outlet pipe connection of the hydraulic system also connected to said body; a closing member installed in said body to open and close said outlet pipe connection; an elongated pliable chamber with resilient walls, and means for supplying said chamber with a working medium under pressure; the chamber having an oval shape and being installed so that it interacts with the closing member in the direction of the smaller axis of the chamber.
Claim 3
Dependent Claim
23 words
A shutoff valve according to claim 1, wherein the walls of the pliable chamber are made of a high-melting alloy, based on columbium.
Claim 4
Dependent Claim
18 words
A shutoff valve according to claim 2, wherein the walls of the pliable chamber comprise several separate layers.
Claim 5
Dependent Claim
21 words
A shutoff valve according to claim 2, wherein the closing member is fastened directly to the walls of the pliable chamber.
Claim 6
Dependent Claim
32 words
A shutoff valve according to claim 2, wherein said valve is three-way and has two pliable chambers with individual working medium supply, each of said chambers interacting with a respective closing member.
Claim 7
Dependent Claim
35 words
A shutoff valve according to claim 2, wherein for automatic control of the working medium supply into the pliable chamber, at least one transmitter is provided therein for indicating the position of the chamber walls.
Claim 8
Dependent Claim
18 words
A shutoff valve according to claim 1, wherein the walls of the pliable chamber comprise several separate layers.
Claim 9
Dependent Claim
21 words
A shutoff valve according to claim 7, wherein the closing member is fastened directly to the walls of the pliable chamber.
Claim 10
Dependent Claim
32 words
A shutoff valve according to claim 7, wherein said valve is three-way and has two pliable chambers with individual working medium supply, each of said chambers interacting with a respective closing member.
Claim 11
Dependent Claim
35 words
A shutoff valve according to claim 7, wherein for automatic control of the working medium supply into the pliable chamber as least one transmitter is provided therein for indicating the position of the chamber walls.
Claim 12
Dependent Claim
21 words
A shutoff valve according to claim 1, wherein the closing member is fastened directly to the walls of the pliable chamber.
Claim 13
Dependent Claim
32 words
A shutoff valve according to claim 11, wherein said valve is three-way and has two pliable chambers with individual working medium supply, each of said chambers interacting with a respective closing member.
Claim 14
Dependent Claim
35 words
A shutoff valve according to claim 11, wherein for automatic control of the working medium supply into the pliable chamber at least one transmitter is provided therein for indicating the position of the chamber walls.
Claim 15
Dependent Claim
32 words
A shutoff valve according to claim 1, wherein said valve is three-way and has two pliable chambers with individual working medium supply, each of said chambers interacting with a respective closing member.
Claim 16
Dependent Claim
35 words
A shutoff valve according to claim 14, wherein for automatic control of the working medium supply into the pliable chamber at least one transmitter is provided therein for indicating the position of the chamber walls.
Claim 17
Dependent Claim
35 words
A shutoff valve according to claim 1, wherein for automatic control of the working medium supply into the pliable chamber at least one transmitter is provided therein for indicating the position of the chamber walls.
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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |