US3642213A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminar flow device for bathtub fill spouts
Assignee: Trane US Inc
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Filing: 1968-06-06
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Granted: 1972-02-15
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Expires: 1988-06-06
Abstract
Abstract This invention involves a fluid flow device which is in the form of a spout-end for a plumbing fixture such as a bathtub, and which is devised to establish a substantially silent, smooth clear and laminar flow of water into the plumbing fixture. The spout-end includes two adjacent flat screens of different meshes, followed in the path of flow by a fluid straightener, such as a ''''rosette,'''' for establishing a plurality of paths which are substantially parallel to each other, and then followed by another pair of screens both of which are concavely shaped at substantially different radii of curvature so that a gap or chamber is centrally formed between the two concaval screens for diverting the parallel streams into a tapered or converging stream which is substantially continuous and laminar.
Inventors
- 👤 Richard G Parkison
- 👤 Guillermo J Vanegas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:09
CPC Classifications
E; E03; E03C; E03C1/00; E03C1/02; E03C1/08; E03C1/086
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
163 words
A substantially laminar nonaerated spout-end comprising a housing having a linear axis, a plurality of contiguous flat screens adjacent the entrance of the housing, the contiguous flat screens being of different sized meshes which are displaced from each other by a predetermined angle, a device made of screened material and positioned downstream of said flat screens and forming a plurality of substantially parallel paths which parallel the axis of the housing, a pair of curved screens of different curvatures, the rims of said curved screens being contiguous so that the curved screens provide therebetween a chamber, a retainer crimped to the rims of said curved screens for holding the curved screens in a predetermined spaced relation to each other, a holder positioned at the entrance of the housing for holdiNg the flat screens, the screened device and the curved screens in position on a ledge of said housing, the fluid traversing said housing emerging as a substantially smooth, laminar and noiseless coordinated stream.
Claim 2
Dependent Claim
163 words
A substantially laminar nonaerated spout-end comprising a housing having a linear axis, a plurality of contiguous flat screens adjacent the entrance of the housing, the contiguous flat screens being of different sized meshes which are displaced from each other by a predetermined angle, a device made of screened material and positioned downstream of said flat screens and forming a plurality of substantially parallel paths which parallel the axis of the housing, a pair of curved screens of different curvatures, the rims of said curved screens being contiguous so that the curved screens provide therebetween a chamber, a retainer crimped to the rims of said curved screens for holding the curved screens in a predetermined spaced relation to each other, a holder positioned at the entrance of the housing for holdiNg the flat screens, the screened device and the curved screens in position on a ledge of said housing, the fluid traversing said housing emerging as a substantially smooth, laminar and noiseless coordinated stream.
Claim 3
Dependent Claim
41 words
A spout-end according to claim 1 in which the housing is made of plastic and the wall of which is provided with steps directed toward the axis of the housing for pointing the emergent stream toward the axis of the housing.
Claim 4
Dependent Claim
23 words
A spout-end according to claim 2 in which the meshes of the curved screens are displaced from each other by a predetermined angle.
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) | 1975-02-14 | 1975-08-16 | 1976-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-14 | 1979-08-16 | 1980-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-14 | 1983-08-16 | 1984-02-15 | $7700.00 | Window Closed / Lapsed |