US3134610A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Casing head
Assignee: Individual
•
Filing: 1961-01-03
•
Granted: 1964-05-26
•
Expires: 1981-01-03
Abstract
No abstract record available.
Inventors
- 👤 Herbert G Musolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:38
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/02; E21B33/03; E21B33/04; E21B33/0422
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
WELL HEAD CASING SUSPENSION AND PACKING APPARATUS COMPRISING: A GENERALLY ANNULAR SLIP BOWL MEMBER, SAID BOWL MEMBER BEING FORMED WITH INTERIOR AND EXTERIOR, SUBSTANTIALLY LONGITUDINALLY COEXTENSIVE, DOWNWARDLY CONVERGING SURFACES; OUTER, UPWARDLY TAPERED SLIP MEANS SLIDABLY POSITIONED ON SAID EXTERIOR SURFACE OF SAID BOWL MEMBER FOR GRIPPINGLY ENGAGING THE INTERIOR SURFACE OF THE BORE OF A SURROUNDING CYLINDRICAL HOUSING UPON DOWNWARD MOVEMENT OF SAID BOWL MEMBER RELATIVE TO SAID SLIP
Claim 2
Dependent Claim
69 words
WELL HEAD CASING SUSPENSION AND PACKING APPARATUS COMPRISING: A GENERALLY ANNULAR SLIP BOWL MEMBER, SAID BOWL MEMBER BEING FORMED WITH INTERIOR AND EXTERIOR, SUBSTANTIALLY LONGITUDINALLY COEXTENSIVE, DOWNWARDLY CONVERGING SURFACES; OUTER, UPWARDLY TAPERED SLIP MEANS SLIDABLY POSITIONED ON SAID EXTERIOR SURFACE OF SAID BOWL MEMBER FOR GRIPPINGLY ENGAGING THE INTERIOR SURFACE OF THE BORE OF A SURROUNDING CYLINDRICAL HOUSING UPON DOWNWARD MOVEMENT OF SAID BOWL MEMBER RELATIVE TO SAID SLIP
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) | 1967-05-26 | 1967-11-25 | 1968-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-26 | 1971-11-25 | 1972-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-26 | 1975-11-25 | 1976-05-26 | $7700.00 | Window Closed / Lapsed |