US3265131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well packer
Assignee: Camco Inc
•
Filing: 1963-09-13
•
Granted: 1966-08-09
•
Expires: 1983-09-13
Abstract
No abstract record available.
Inventors
- 👤 Harry C Ehlert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:53
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/129; E21B33/1295
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
WELL PACKER EQUIPMENT OF THE CHARACTER DESCRIBED INCLUDING A DEFORMABLE PACKING MEMBER ARRANGED FOR RADIAL EXPANSION IN RESPONSE TO AXIAL SQUEEZE PRESSURE APPLIED ON OPPOSITE ENDS THEREOF, FIRST ABUTMENT MEANS AND SECOND ABUTMENTS ENGAGEABLE WITH OPPOSITE ENDS OF THE DEFORMABLE PACKING MEMBER, THE FIRST ABUTMENT MEANS INCLUDING A SLIDABLE PISTON MEMBER HAVING OPPOSING HEAD SURFACES FOR EXPOSURE TO PRESSURE FLUID WHICH CONTROLS PISTON SLIDE POSITION, THE SECOND ABUTMENT MEANS INCLUDING A CHAMBERED MEMBER RECEIVING ONE OF THE PISTON HEAD SURFACES AND CO-OPERATING THEREWITH TO DEFINE A VARIABLE VOLUME PRESSURE FLUID CHAMBER AND MEANS TO EVACUATE PRESSURE FLUID FROM SAID VARIABLE VOLUME CHAMBER AND
Claim 2
Dependent Claim
103 words
WELL PACKER EQUIPMENT OF THE CHARACTER DESCRIBED INCLUDING A DEFORMABLE PACKING MEMBER ARRANGED FOR RADIAL EXPANSION IN RESPONSE TO AXIAL SQUEEZE PRESSURE APPLIED ON OPPOSITE ENDS THEREOF, FIRST ABUTMENT MEANS AND SECOND ABUTMENTS ENGAGEABLE WITH OPPOSITE ENDS OF THE DEFORMABLE PACKING MEMBER, THE FIRST ABUTMENT MEANS INCLUDING A SLIDABLE PISTON MEMBER HAVING OPPOSING HEAD SURFACES FOR EXPOSURE TO PRESSURE FLUID WHICH CONTROLS PISTON SLIDE POSITION, THE SECOND ABUTMENT MEANS INCLUDING A CHAMBERED MEMBER RECEIVING ONE OF THE PISTON HEAD SURFACES AND CO-OPERATING THEREWITH TO DEFINE A VARIABLE VOLUME PRESSURE FLUID CHAMBER AND MEANS TO EVACUATE PRESSURE FLUID FROM SAID VARIABLE VOLUME CHAMBER AND
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) | 1969-08-08 | 1970-02-07 | 1970-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-08 | 1974-02-07 | 1974-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-08 | 1978-02-07 | 1978-08-09 | $7700.00 | Window Closed / Lapsed |