US3074485A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Latch for retrievable valves or the like
Assignee: SID W RICHARDSON Inc
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Filing: 1959-01-16
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Granted: 1963-01-22
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Expires: 1979-01-16
Abstract
No abstract record available.
Inventors
- 👤 Jr Harold E Mcgowen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:38
CPC Classifications
E; E21; E21B; E21B23/00; E21B23/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
IN COMBINATION WITH A FLOW CONTROL DEVICE ADAPTED TO BE LOWERED INTO, LATCHED WITHIN, AND WITHDRAWN FROM A TUBULAR RECEIVER HAVING AN INWARDLY PROJECTING SHOULDER OR STOP, A LATCHING ASSEMBLY FOR SAID FLOW CONTROL DEVICE COMPRISING A STEM OF REDUCED DIAMETER PROJECTING FROM SAID FLOW CONTROL DEVICE, A NON-EXPANSIBLE LATCHING RING LOOSELY CARRIED BY SAID STEM, SAID STOP AND SAID LATCHING RING BEING PROVIDED WITH COATING CAMMING MEANS, AND SAID LATCHING RING BEING ADAPTED WHEN UNRESTRAINED TO FREELY PASS THE SHOULDER OF SAID TUBULAR RECEIVER, RECIPROCABLE RESTRAINING MEANS MOVABLE INTO AND OUT OF ENGAGEMENT WITH SAID RING AND SERVING WHEN IN ENGAGEMENT WITH THE RING TO RESTRAIN LATERAL MOVEMENT OF THE RING THEREBY PREVENTING SAID RING FROM PASSING SAID SHOULDER.
Claim 2
Dependent Claim
120 words
IN COMBINATION WITH A FLOW CONTROL DEVICE ADAPTED TO BE LOWERED INTO, LATCHED WITHIN, AND WITHDRAWN FROM A TUBULAR RECEIVER HAVING AN INWARDLY PROJECTING SHOULDER OR STOP, A LATCHING ASSEMBLY FOR SAID FLOW CONTROL DEVICE COMPRISING A STEM OF REDUCED DIAMETER PROJECTING FROM SAID FLOW CONTROL DEVICE, A NON-EXPANSIBLE LATCHING RING LOOSELY CARRIED BY SAID STEM, SAID STOP AND SAID LATCHING RING BEING PROVIDED WITH COATING CAMMING MEANS, AND SAID LATCHING RING BEING ADAPTED WHEN UNRESTRAINED TO FREELY PASS THE SHOULDER OF SAID TUBULAR RECEIVER, RECIPROCABLE RESTRAINING MEANS MOVABLE INTO AND OUT OF ENGAGEMENT WITH SAID RING AND SERVING WHEN IN ENGAGEMENT WITH THE RING TO RESTRAIN LATERAL MOVEMENT OF THE RING THEREBY PREVENTING SAID RING FROM PASSING SAID SHOULDER.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-21 | 1966-07-23 | 1967-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-21 | 1970-07-23 | 1971-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-21 | 1974-07-23 | 1975-01-22 | $7700.00 | Window Closed / Lapsed |