US3818922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety valve arrangement for controlling communication between the interior and exterior of a tubular member
Assignee: Lynes Inc
•
Filing: 1973-05-21
•
Granted: 1974-06-25
•
Expires: 1993-05-21
Abstract
Abstract An arrangement for controlling fluid communication between the interior of a tubular member and interior of an inflatable element supported externally on the tubular member including fluid passage means communicating from the interior of the tubular member to the interior of the inflatable element with valve means normally seated to close off flow from the interior of the tubular member to the interior of the inflatable element until a predetermined pressure has been exerted thereon. After the valve has been opened to communicate fluid from the interior of the tubular member to the interior of the inflatable element for inflation thereof, the valve closes when a predetermined relationship is reached between the pressure in the interior of the tubular member and externally of the tubular member. Locking means are provided to lock the valve in closed position and prevent further communication between the interior of the tubular member and interior of the inflatable element when the valve closes.
Inventors
- 👤 B Malone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:54
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/127; Y; Y10; Y10T; Y10T137/00; Y10T137/1624; Y10T137/1632; Y10T137/1782
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
96 words
An arrangement for controlling fluid communication between the interior and exterior of a tubular member comprising: a. valve housing means adapted to be supported by the tubular member; b. there being passage means in said valve housing for communicating fluid therethrough; c. valve means to close off communication through the passage means until the fluid pressure in the passage means exceeds a predetermined amount whereupon said valve means opens; and d. valve locking means associated with said valve means for thereafter locking said valve means in closed position to close off communication through said passage means.
Claim 2
Dependent Claim
96 words
An arrangement for controlling fluid communication between the interior and exterior of a tubular member comprising: a. valve housing means adapted to be supported by the tubular member; b. there being passage means in said valve housing for communicating fluid therethrough; c. valve means to close off communication through the passage means until the fluid pressure in the passage means exceeds a predetermined amount whereupon said valve means opens; and d. valve locking means associated with said valve means for thereafter locking said valve means in closed position to close off communication through said passage means.
Claim 3
Dependent Claim
121 words
An arrangement for controlling fluid communication between the interior and exterior of a tubular member comprising: a. valve housing means adapted to be supported by the tubular member; b. there being passage means in said valve housing means for communicating fluid therethrough; c. valve means for controlling fluid flow through the passage means, said valve means including a valve stem; d. said valve means including means to close off communication through the passage means until the fluid pressure in the passage means exceeds a predetermined amount whereupon said valve means opens to communicate fluid therethrough; and e. valve locking means responsive after said valve means has been opened and then moved to closed position for locking said valve in closed position.
Claim 4
Dependent Claim
121 words
An arrangement for controlling fluid communication between the interior and exterior of a tubular member comprising: a. valve housing means adapted to be supported by the tubular member; b. there being passage means in said valve housing means for communicating fluid therethrough; c. valve means for controlling fluid flow through the passage means, said valve means including a valve stem; d. said valve means including means to close off communication through the passage means until the fluid pressure in the passage means exceeds a predetermined amount whereupon said valve means opens to communicate fluid therethrough; and e. valve locking means responsive after said valve means has been opened and then moved to closed position for locking said valve in closed position.
Claim 5
Dependent Claim
66 words
The invention of claim 2 wherein said valve backing means includes: a. valve retaining means in said valve housing and having a bore therein; b. collet means in the bore of said valve retaining means surrounding said valve stem and abutting an end thereof; and c. shear pin means engaging said collet means and said valve retaining means together to hold said valve in closed position.
Claim 6
Dependent Claim
226 words
The invention of claim 2 including: a. valve retaining means in said valve housing and having a bore therein; b. first and second shoulders formed in the bore of said valve retaining means with said second shoulder being spaced radially inwardly relative to said first shoulder; c. first and second shoulder means on said valve stem; d. collet means surrounding said valve stem at one end thereof, said collet means engaging said first shoulder in the bore of said valve retaining means when said valve is opened; e. spring means surrounding said valve stem and at one of its ends abutting said first shoulder on said valve stem and at its other end abutting said collet, said spring means being collapsed between said first shoulder on said valve stem and said collet when said valve is opened and said spring means moving said valve means towards seating position when the pressure externally of the tubular member reaches a predetermined relationship relative to the pressure internally of the tubular member and also urging said collet longitudinally of the bore in said valve retaining means to engage said second shoulder in the bore of said valve retaining means thereby collapsing said collet toward said valve stem whereupon it engages said second shoulder on said valve stem when said valve closes to thereby lock said valve in closed position.
References Cited (Backward Citations)
US3437142A
Cited
US3427651A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-24 | 1977-12-24 | 1978-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-24 | 1981-12-24 | 1982-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-24 | 1985-12-24 | 1986-06-25 | $7700.00 | Window Closed / Lapsed |