US4520514A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fitting for a swimming pool return line
Assignee: Laars Inc
•
Filing: 1983-04-29
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Granted: 1985-06-04
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Expires: 2003-04-29
Abstract
Abstract A fitting for a swimming pool return line comprising a housing with a cylindrical extension that may be inserted into the return line and an outer end closure in which the main nozzle is swiveled for directional control of surface circulation. A slot in the bottom of the housing is of adjustable size for bottom circulation. The fitting is secured in place by pulling sloping, radial legs toward planar disposition which would bear against the inner surface of the return line.
Inventors
- 👤 Bruce R. Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:06
CPC Classifications
E; E04; E04H; E04H4/00; E04H4/12
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
148 words
A fitting for a swimming pool return line having an outlet end near the surface of the pool comprising: a generally cylindrical housing; a cylindrical extension on one end of said housing receivable in the outlet end of said return line to be secured therein; an end closure on said other end of said housing; a nozzle centrally located on said end closure, and a flow passageway through said nozzle to direct a jet of water outward; said nozzle being movable in said end closure for directional adjustment of said flow passageway; an arcuate slot in the lower portion of said housing to jet a sheet of water downward along a wall in which said housing is mounted; and an arcuate closure member movable in said housing between a closed position wherein said slot is covered and a full open position wherein flow through said slot is unimpeded.
Claim 2
Dependent Claim
148 words
A fitting for a swimming pool return line having an outlet end near the surface of the pool comprising: a generally cylindrical housing; a cylindrical extension on one end of said housing receivable in the outlet end of said return line to be secured therein; an end closure on said other end of said housing; a nozzle centrally located on said end closure, and a flow passageway through said nozzle to direct a jet of water outward; said nozzle being movable in said end closure for directional adjustment of said flow passageway; an arcuate slot in the lower portion of said housing to jet a sheet of water downward along a wall in which said housing is mounted; and an arcuate closure member movable in said housing between a closed position wherein said slot is covered and a full open position wherein flow through said slot is unimpeded.
Claim 3
Dependent Claim
20 words
The fitting defined by claim 1 including: means for securing said nozzle in an adjusted portion in said end closure.
Claim 4
Dependent Claim
79 words
The fitting defined by claim 1 including: a centrally disposed ring in said cylindrical extension; at least two radial legs on said ring with the ends thereof adapted to engage the inner surface of said return line; said legs being disposed at an angle to a radial plane of said return line; and means for pulling said ring forward to force said legs toward said radial plane to increase bearing pressure against the inner surface of said return line.
Claim 5
Dependent Claim
36 words
The fitting defined by claim 3 wherein: said last-named means includes a threaded member carried coaxially in said cylindrical extension; and said main water outlet is substantially aligned with said threaded member to provide access thereto.
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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) | 1988-06-03 | 1988-12-03 | 1989-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-03 | 1992-12-03 | 1993-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-03 | 1996-12-03 | 1997-06-04 | $7700.00 | Window Closed / Lapsed |