Patent US4178139A successfully refreshed from Google Patents.
US4178139A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cistern pumping plant
Assignee: E Sarlin Oy AB
•
Filing: 1978-02-10
•
Granted: 1979-12-11
•
Expires: 1998-02-10
Abstract
Abstract A cistern pumping plant having within a cistern at least one pump which for the purpose of maintenance and repairs is liftable along guides up onto a servicing platform in the cistern. The servicing platform and/or a part thereof is a plate hinged to the cistern and turnable to an opened position.
Inventors
- 👤 Rauno Seppanen
- 👤 Hannu Sarvanne
- 👤 Sixten Jakobsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:14
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/60; F04D29/605; F04D29/606; F04D29/607
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
135 words
A cistern pumping plant comprising at least one pump within a cistern having a vertical wall; a plurality of guides; a servicing platform, said guides located between said platform and the wall and extending from a lower portion of said cistern below said platform to an upper portion of said cistern above said platform, said pump being liftable for maintenance and repairs along said guides up onto said servicing platform inside said cistern; said servicing platform comprising a plate hinged to the cistern and being turnable from a horizontal position, whereby a pump that is in need of being serviced being liftable directly into position above the servicing platform that has been turned to its open position whereupon the servicing platform is turned to its horizontal position and the pump is lowered to rest thereupon.
Claim 2
Dependent Claim
135 words
A cistern pumping plant comprising at least one pump within a cistern having a vertical wall; a plurality of guides; a servicing platform, said guides located between said platform and the wall and extending from a lower portion of said cistern below said platform to an upper portion of said cistern above said platform, said pump being liftable for maintenance and repairs along said guides up onto said servicing platform inside said cistern; said servicing platform comprising a plate hinged to the cistern and being turnable from a horizontal position, whereby a pump that is in need of being serviced being liftable directly into position above the servicing platform that has been turned to its open position whereupon the servicing platform is turned to its horizontal position and the pump is lowered to rest thereupon.
Claim 3
Dependent Claim
25 words
A cistern pumping plant according to claim 1, characterized in that in the cistern there are two hinged servicing platforms located in one common plane.
Claim 4
Dependent Claim
28 words
A cistern pumping plant according to claim 2, characterized in that the area of the servicing platforms is about one-half of the cross sectional area of the cistern.
Claim 5
Dependent Claim
19 words
A cistern pumping plant according to claim 1, characterized in that the servicing platform consists of a metal grating.
Claim 6
Dependent Claim
47 words
A cistern pumping plant as defined in claim 1 wherein said cistern has two hinged servicing platforms located in one common plane; said servicing platforms having an area equal to substantially one-half of the cross-sectional area of the cistern; said servicing platforms being comprised of metal grating.
References Cited (Backward Citations)
NL44572C
Cited
US3018925A
Cited
US2883853A
Cited
US3112760A
Cited
CH457306A
Cited
US3974599A
Cited
US3938545A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-12-10 | 1983-06-11 | 1983-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-10 | 1987-06-11 | 1987-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-10 | 1991-06-11 | 1991-12-11 | $7700.00 | Window Closed / Lapsed |