US3817282A
Expired / Lapsed
US
⏱️ 0.0 years remaining
In-line test valve
Assignee: ACF Industries Inc
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Filing: 1972-09-14
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Granted: 1974-06-18
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Expires: 1992-09-14
Abstract
Abstract A test valve is positioned between a first fluid pressure source acting on valve means to be tested and includes first fluid passage means to normally communicate the first fluid pressure source with the valve means to be tested, and also includes alternate passage means which is normally closed off by the check valve means so that when flow through the first fluid passage means is closed, the first fluid pressure source can be shut off from acting on the valve means to be tested and the alternate passage means then communicated with a test pressure source and the first passage means to flow test fluid from the exterior of the test valve to the valve means to be tested to test the functioning of the valve means. When the testing has been accomplished, the test valve is constructed and arranged so that it will automatically close off the alternate passage means and re-establish communication with the first fluid pressure source normally acting on the valve means whereby the tested valve means returns to normal operation in relation to the first fluid pressure source.
Inventors
- 👤 C Peters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:07
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/36; F16K31/38; F16K31/383; G; G01; G01L; G01L27/00; G01L27/007; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87571; Y10T137/87676; Y10T137/87684; Y10T137/87692
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
284 words
An arrangement for closing off a first fluid pressure source acting on valve means and communicating an alternate fluid pressure source to act on the valve means for testing the valve means comprising: a. test valve means for positioning between the first fluid pressure source and the valve means to be tested, said test valve means comprising: 1. body means including means thereon for securing said test valve means between the first fluid pressure source and the valve means to be tested; 2. said body having first passage means therein communicating the first fluid pressure source with the valve means to be tested; 3. plunger means In said body movable to close off communication between the first fluid pressure source and the valve means to be tested; 4. means acting on said plunger means to urge it to a position in said body to normally maintain communication between the first fluid pressure source and the valve means to be tested; 5. surface means on said plunger engagable to move and hold said plunger in position to close off communication between the first fluid pressure source and the valve means to be tested; 6. there being additional passage means associated with said body for communicating the first passage means in said body to the exterior thereof when said plunger closes off communication between the first fluid pressure source and the valve means to be tested; 7. spring loaded check valve means normally closing off the additional passage means and movable upon engagement to communicate the first passage means to the exterior of said body; and 8. said body having an opening therein for access to engage said plunger surface means and said check valve means.
Claim 2
Dependent Claim
284 words
An arrangement for closing off a first fluid pressure source acting on valve means and communicating an alternate fluid pressure source to act on the valve means for testing the valve means comprising: a. test valve means for positioning between the first fluid pressure source and the valve means to be tested, said test valve means comprising: 1. body means including means thereon for securing said test valve means between the first fluid pressure source and the valve means to be tested; 2. said body having first passage means therein communicating the first fluid pressure source with the valve means to be tested; 3. plunger means In said body movable to close off communication between the first fluid pressure source and the valve means to be tested; 4. means acting on said plunger means to urge it to a position in said body to normally maintain communication between the first fluid pressure source and the valve means to be tested; 5. surface means on said plunger engagable to move and hold said plunger in position to close off communication between the first fluid pressure source and the valve means to be tested; 6. there being additional passage means associated with said body for communicating the first passage means in said body to the exterior thereof when said plunger closes off communication between the first fluid pressure source and the valve means to be tested; 7. spring loaded check valve means normally closing off the additional passage means and movable upon engagement to communicate the first passage means to the exterior of said body; and 8. said body having an opening therein for access to engage said plunger surface means and said check valve means.
Claim 3
Dependent Claim
20 words
said body having first passage means therein communicating the first fluid pressure source with the valve means to be tested;
Claim 4
Dependent Claim
20 words
said body having first passage means therein communicating the first fluid pressure source with the valve means to be tested;
Claim 5
Dependent Claim
107 words
The invention of claim 1 including: a. hollow stinger means engageable in the opening in said body to move and hold said plunger in position to close off the first passage means to prevent communication between the first fluid pressure source and the valve means to be tested; b. said stinger means including means for engaging and moving said check valve means to open the additional passage means whereby the first passage means communicates to the exterior of said body; and c. said hollow stinger means including means for connecting with an alternate fluid pressure source whereby fluid pressure may be conducted to test the valve means.
Claim 6
Dependent Claim
74 words
The invention of claim 1 wherein: a. the first passage means includes seat means intermediate the ends of the first passage means; b. seat means on said plunger means for seating in said seat means of said first passage means; and c. the additional passage means having one end thereof communicating with the first passage means downstream of said seat means relative to the first fluid pressure source when said seat means are engaged.
Claim 7
Dependent Claim
23 words
plunger means In said body movable to close off communication between the first fluid pressure source and the valve means to be tested;
Claim 8
Dependent Claim
23 words
plunger means In said body movable to close off communication between the first fluid pressure source and the valve means to be tested;
Claim 9
Dependent Claim
32 words
means acting on said plunger means to urge it to a position in said body to normally maintain communication between the first fluid pressure source and the valve means to be tested;
Claim 10
Dependent Claim
32 words
means acting on said plunger means to urge it to a position in said body to normally maintain communication between the first fluid pressure source and the valve means to be tested;
Claim 11
Dependent Claim
31 words
surface means on said plunger engagable to move and hold said plunger in position to close off communication between the first fluid pressure source and the valve means to be tested;
Claim 12
Dependent Claim
31 words
surface means on said plunger engagable to move and hold said plunger in position to close off communication between the first fluid pressure source and the valve means to be tested;
Claim 13
Dependent Claim
41 words
there being additional passage means associated with said body for communicating the first passage means in said body to the exterior thereof when said plunger closes off communication between the first fluid pressure source and the valve means to be tested;
Claim 14
Dependent Claim
41 words
there being additional passage means associated with said body for communicating the first passage means in said body to the exterior thereof when said plunger closes off communication between the first fluid pressure source and the valve means to be tested;
Claim 15
Dependent Claim
29 words
spring loaded check valve means normally closing off the additional passage means and movable upon engagement to communicate the first passage means to the exterior of said body; and
Claim 16
Dependent Claim
29 words
spring loaded check valve means normally closing off the additional passage means and movable upon engagement to communicate the first passage means to the exterior of said body; and
Claim 17
Dependent Claim
19 words
said body having an opening therein for access to engage said plunger surface means and said check valve means.
Claim 18
Dependent Claim
19 words
said body having an opening therein for access to engage said plunger surface means and said check valve means.
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) | 1977-06-17 | 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 |