Patent US3939504A successfully refreshed from Google Patents.
US3939504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Swimming-pool structure
Assignee: Individual
•
Filing: 1974-06-20
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Granted: 1976-02-24
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Expires: 1994-06-20
Abstract
Abstract A swimming pool is formed of a plurality of interconnected and contiguous wall and bottom plates some of which are formed with ducts adapted to conduct water into the pool. These plates are formed at the ducts with a plurality of nozzles which direct a flow of water generally upwardly and toward the center of the pool for most efficient water exchange. The ducts are formed as channels between the edges of the contiguous plates and are capped with long cover elements having flanges engaged in grooves in the confronting inside flanks of the channels. The plates are joined together in the duct-forming channels at inwardly bent lips that are bolted together to either side of a resilient seal.
Inventors
- 👤 Josef Linecker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:59
CPC Classifications
E; E04; E04H; E04H4/00; E04H4/12; E04H4/1209
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
168 words
In a swimming pool the improvement which comprises: a plurality of plates secured in substantially contiguous relationship and defining the bottom of the swimming pool, channels lying below the bottom surfaces of the plates bridging the adjacent side edges of said plates and upwardly open at the bottom of said swimming pool, said channels having outwardly extending portions at the upper end thereof for attaching adjacent sides of the bottom surfaces of said plates to said channels said channels further having flanks provided with inwardly open grooves; respective covers closing the mouths of said channels and having downwardly extending flanges received in said grooves, said covers having planar portions substantially flush with said plates along said bottom of said pool, said covers being formed at spaced locations with orifices communicating between the interiors of said channels and said pool; transverse duct means interconnecting said channels; and recirculation means connected to said duct means for forcing water through said channels to distribute water into said pool through said orifices.
Claim 2
Dependent Claim
168 words
In a swimming pool the improvement which comprises: a plurality of plates secured in substantially contiguous relationship and defining the bottom of the swimming pool, channels lying below the bottom surfaces of the plates bridging the adjacent side edges of said plates and upwardly open at the bottom of said swimming pool, said channels having outwardly extending portions at the upper end thereof for attaching adjacent sides of the bottom surfaces of said plates to said channels said channels further having flanks provided with inwardly open grooves; respective covers closing the mouths of said channels and having downwardly extending flanges received in said grooves, said covers having planar portions substantially flush with said plates along said bottom of said pool, said covers being formed at spaced locations with orifices communicating between the interiors of said channels and said pool; transverse duct means interconnecting said channels; and recirculation means connected to said duct means for forcing water through said channels to distribute water into said pool through said orifices.
Claim 3
Dependent Claim
16 words
The improvement defined in claim 1 wherein said covers are made of a water-resistant synthetic resin.
Claim 4
Dependent Claim
73 words
The improvement defined in claim 2 wherein each of said plates is provided with an edge portion forming half of a respective one of said channels and an upstanding lip adapted to project upwardly in the base of the respective channel, means being provided for securing said lips of two adjoining plates together within the respective channel, a bead of sealing material being mounted upon the interconnecting lips to seal said plates together.
Claim 5
Dependent Claim
22 words
The improvement defined in claim 3 wherein said orifices are formed with nozzles for deflecting water in directions generally along said bottom.
Claim 6
Dependent Claim
18 words
The improvement defined in claim 3 wherein said plates are formed with corrugations of generally U cross section.
Claim 7
Dependent Claim
19 words
The improvement defined in claim 5 wherein said corrugations have a narrow waste at the shanks of the U.
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) | 1979-02-23 | 1979-08-25 | 1980-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-23 | 1983-08-25 | 1984-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-23 | 1987-08-25 | 1988-02-24 | $7700.00 | Window Closed / Lapsed |