Patent US3073256A successfully refreshed from Google Patents.
US3073256A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump
Assignee: Elster American Meter Co LLC
•
Filing: 1959-12-29
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Granted: 1963-01-15
•
Expires: 1979-12-29
Abstract
No abstract record available.
Inventors
- 👤 Robert J Browne
- 👤 Heinz K Hetz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:10
CPC Classifications
F; F04; F04B; F04B49/00; F04B49/08; F04B13/00; F04B15/00; F04B15/04; F04B53/00; F04B53/10; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7838
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
188 words
IN A RECIPROCATING PISTON PUMP HAVING A HORIZONTAL CYLINDER WITH AN INLET LINE CONNECTION ON ITS UNDER SIDE AT ITS OUTER END AND AN OUTLET LINE CONNECTION ON ITS UPPER SIDE SPACED INWARD FROM SAID OUTER END, TWO STEPS ON THE UPPER SIDE OF THE CYLINDER, ONE STEP BEING ABOVE THE INLET CONNECTION AND THE OTHER STEP BEING BETWEEN THE INLET AND OUTLET CONNECTIONS, A VERTICAL COUNTER BORE IN EACH STEP HAVING A CENTRAL OPENING AND A SHOULDER AROUND THE OPENING, A CUP SHAPED VALVE SEAT MEMBER IN EACH COUNTER BORE WITH THE RIM UPWARD, EACH VALVE SEAT MEMBER SEATED ON THE SHOULDER AND HAVING AN INLET IN ITS BOTTOM AND A LATERAL OUTLET IN ITS SIDE WALLS WITH A BALL CHECK THEREBETWEEN, A PASSAGEWAY LEADING FROM THE OUTLET OF THE INLET SEAT MEMBER TO THE CYLINDER, A PASSAGEWAY LEADING FROM THE OUTLET OF THE OUTLET SEAT MEMBER TO THE OUTLET LINE CONNECTION, A CAP SEATED ON THE RIM OF EACH VALVE SEAT MEMBER, AND A VALVE COVER FASTENED TO SAID CYLINDER AND HAVING COMPLEMENTARY STEPS ENGAGING SAID CAPS FOR HOLDING SAID SEAT MEMBERS IN SAID COUNTER BORES.
Claim 2
Dependent Claim
188 words
IN A RECIPROCATING PISTON PUMP HAVING A HORIZONTAL CYLINDER WITH AN INLET LINE CONNECTION ON ITS UNDER SIDE AT ITS OUTER END AND AN OUTLET LINE CONNECTION ON ITS UPPER SIDE SPACED INWARD FROM SAID OUTER END, TWO STEPS ON THE UPPER SIDE OF THE CYLINDER, ONE STEP BEING ABOVE THE INLET CONNECTION AND THE OTHER STEP BEING BETWEEN THE INLET AND OUTLET CONNECTIONS, A VERTICAL COUNTER BORE IN EACH STEP HAVING A CENTRAL OPENING AND A SHOULDER AROUND THE OPENING, A CUP SHAPED VALVE SEAT MEMBER IN EACH COUNTER BORE WITH THE RIM UPWARD, EACH VALVE SEAT MEMBER SEATED ON THE SHOULDER AND HAVING AN INLET IN ITS BOTTOM AND A LATERAL OUTLET IN ITS SIDE WALLS WITH A BALL CHECK THEREBETWEEN, A PASSAGEWAY LEADING FROM THE OUTLET OF THE INLET SEAT MEMBER TO THE CYLINDER, A PASSAGEWAY LEADING FROM THE OUTLET OF THE OUTLET SEAT MEMBER TO THE OUTLET LINE CONNECTION, A CAP SEATED ON THE RIM OF EACH VALVE SEAT MEMBER, AND A VALVE COVER FASTENED TO SAID CYLINDER AND HAVING COMPLEMENTARY STEPS ENGAGING SAID CAPS FOR HOLDING SAID SEAT MEMBERS IN SAID COUNTER BORES.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-14 | 1966-07-16 | 1967-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-14 | 1970-07-16 | 1971-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-14 | 1974-07-16 | 1975-01-15 | $7700.00 | Window Closed / Lapsed |