Patent US3134305A successfully refreshed from Google Patents.
US3134305A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump rod stuffing box assembly
Assignee: Individual
•
Filing: 1963-01-02
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Granted: 1964-05-26
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Expires: 1983-01-02
Abstract
No abstract record available.
Inventors
- 👤 Jr Kresten R Jensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:59
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/02; E21B33/08; F; F04; F04B; F04B53/00; F04B53/16; F04B53/162; F04B53/164
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
IN A WELL TUBE ASSEMBLY INCLUDING A STUFFING BOX AND A PLUNGER ON A PUMP ROD SLIDABLE IN SAID BOX, THE IMPROVEMENT CONSISTING OF A LINER ASSEMBLY DISPOSED SO AS TO SURROUND SAID PLUNGER, SAID ASSEMBLY COMPRISING A STEEL SLEEVE, A BRASS LINER WITHIN AND SPACED FROM SAID SLEEVE, AND AN ELECTRICALLY INSULATING SLEEVE DISPOSED IN THE SPACE BETWEEN SAID SLEEVE AND LINER.
Claim 2
Dependent Claim
63 words
IN A WELL TUBE ASSEMBLY INCLUDING A STUFFING BOX AND A PLUNGER ON A PUMP ROD SLIDABLE IN SAID BOX, THE IMPROVEMENT CONSISTING OF A LINER ASSEMBLY DISPOSED SO AS TO SURROUND SAID PLUNGER, SAID ASSEMBLY COMPRISING A STEEL SLEEVE, A BRASS LINER WITHIN AND SPACED FROM SAID SLEEVE, AND AN ELECTRICALLY INSULATING SLEEVE DISPOSED IN THE SPACE BETWEEN SAID SLEEVE AND LINER.
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) | 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 |