Patent US3299830A successfully refreshed from Google Patents.
US3299830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bar-coupling
Assignee: Canada Tiefbohrgeraete und Maschinenfabrik GmbH
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Filing: 1965-05-07
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Granted: 1967-01-24
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Expires: 1985-05-07
Abstract
No abstract record available.
Inventors
- 👤 Hora Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:21
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/02; E21B17/04; E21B17/06; Y; Y10; Y10T; Y10T403/00; Y10T403/53; Y10T403/535; Y10T403/70; Y10T403/7062; Y10T403/7064
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
A ROD-COUPLING, PARTICULARLY FOR DEEP-WELL PUMPS COMPRISING A LONGITUDINAL HOLLOW BODY HAVING AXIALLY DISPOSED SLOTS FOR AT LEAST PART OF ITS LENGTH AND ALSO A CONICAL INNER END FACE, A PUMP ROD CONNECTED WITH SAID LONGITUDINAL HOLLOW BODY, A PUMP PISTON, A CONICAL PIN CONNECTED COAXIALLY WITH SAID PUMP PISTON, SAID CONICAL PIN BEING RECEIVED IN SAID CONICAL INNER END FACE OF SAID LONGITUDINAL HOLLOW BODY, THE OUTER CONICAL FACE OF SAID CONICAL PIN AND SAID CONICAL INNER END FACE OF SAID LONGITUDINAL HOLLOW BODY COMPLEMENTING EACH OTHER TO OPERATE AS A CLAMPING WEDGE LOCKING MEANS, IN ORDER TO ASSURE
Claim 2
Dependent Claim
100 words
A ROD-COUPLING, PARTICULARLY FOR DEEP-WELL PUMPS COMPRISING A LONGITUDINAL HOLLOW BODY HAVING AXIALLY DISPOSED SLOTS FOR AT LEAST PART OF ITS LENGTH AND ALSO A CONICAL INNER END FACE, A PUMP ROD CONNECTED WITH SAID LONGITUDINAL HOLLOW BODY, A PUMP PISTON, A CONICAL PIN CONNECTED COAXIALLY WITH SAID PUMP PISTON, SAID CONICAL PIN BEING RECEIVED IN SAID CONICAL INNER END FACE OF SAID LONGITUDINAL HOLLOW BODY, THE OUTER CONICAL FACE OF SAID CONICAL PIN AND SAID CONICAL INNER END FACE OF SAID LONGITUDINAL HOLLOW BODY COMPLEMENTING EACH OTHER TO OPERATE AS A CLAMPING WEDGE LOCKING MEANS, IN ORDER TO ASSURE
References Cited (Backward Citations)
US2675829A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-23 | 1970-07-25 | 1971-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-23 | 1974-07-25 | 1975-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-23 | 1978-07-25 | 1979-01-24 | $7700.00 | Window Closed / Lapsed |