US3630447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sediment-resisting spray outlet
Assignee: Bradley Washfountain Co
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Filing: 1970-04-20
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Granted: 1971-12-28
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Expires: 1990-04-20
Abstract
Abstract A circular spray head is shown that has a fluid chamber formed by clamping upper and lower dished plates against the top and bottom of a central hub. The periphery of the upper-plate curves downward to form the upper lip of an outlet opening that extends completely around and forms a part of the rim of the fluid chamber. The periphery of the lower plate extends upward to form the lower lip of this outlet opening. A ring-shaped fluid distributor having a plurality of successive, circumferentially spaced spray openings located along its length is inserted and maintained in the outlet opening. The fluid distributor is made of a resilient material which deforms slightly in response to fluid pressure to dislodge mineral deposits and keep the spray openings clean.
Inventors
- 👤 E Allen Smart
- 👤 Frank Hessler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:49
CPC Classifications
E; E03; E03C; E03C1/00; E03C1/02; E03C1/04; E03C1/048
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
123 words
A self-cleaning spray head which comprises: a fluid chamber with an inlet and an elongated outlet having a width and length; and a fluid distributor having an inside and an outside surface inserted in said elongated outlet and characterized by the following features: it is made of a resilient material; the ratio of the thickness of the fluid distributor, as measured by the distance between its inside and outside surfaces, to the width of said elongated outlet is within the range of 0.5 to 2; the hardness of the fluid distributor is within the range of 40 to 60 durometer; and there are a plurality of spray openings formed in said fluid distributor and running from its inside surface to its outside surface.
Claim 2
Dependent Claim
123 words
A self-cleaning spray head which comprises: a fluid chamber with an inlet and an elongated outlet having a width and length; and a fluid distributor having an inside and an outside surface inserted in said elongated outlet and characterized by the following features: it is made of a resilient material; the ratio of the thickness of the fluid distributor, as measured by the distance between its inside and outside surfaces, to the width of said elongated outlet is within the range of 0.5 to 2; the hardness of the fluid distributor is within the range of 40 to 60 durometer; and there are a plurality of spray openings formed in said fluid distributor and running from its inside surface to its outside surface.
Claim 3
Dependent Claim
32 words
A self-cleaning spray head as recited in claim 1, wherein said spray openings are substantially straight and inclined with respect to the axis used to measure the thickness of said fluid distributor.
Claim 4
Dependent Claim
111 words
A self-cleaning spray head for a washfountain which comprises: a fluid chamber made of a rigid material having a rim extending a distance around a vertical center axis, and an elongated opening in the chamber wall located along said chamber rim; and a fluid distributor inserted and retained in said elongated opening, which fluid distributor is made of a resilient material having a plurality of spray openings spaced successively along its length to provide a spray pattern when water under pressure is forced through said spray openings, and in which the deformation of the fluid distributor caused by the water pressure, inhibits the collection of mineral deposits in said spray openings.
Claim 5
Dependent Claim
111 words
A self-cleaning spray head for a washfountain which comprises: a fluid chamber made of a rigid material having a rim extending a distance around a vertical center axis, and an elongated opening in the chamber wall located along said chamber rim; and a fluid distributor inserted and retained in said elongated opening, which fluid distributor is made of a resilient material having a plurality of spray openings spaced successively along its length to provide a spray pattern when water under pressure is forced through said spray openings, and in which the deformation of the fluid distributor caused by the water pressure, inhibits the collection of mineral deposits in said spray openings.
Claim 6
Dependent Claim
28 words
The self-cleaning spray head as recited in claim 3, wherein said fluid distributor is constructed of rubber having a hardness in the range of 40 to 60 durometer.
Claim 7
Dependent Claim
56 words
The self-cleaning spray head as recited in claim 3, wherein said fluid distributor has a thickness which is measured perpendicular to, and is at least one-half as large as, the width of said elongated opening, and the fluid distributor has grooves along its marginal portions to receive and mate with the walls of said fluid chamber.
Claim 8
Dependent Claim
25 words
The self-cleaning spray head as recited in claim 3, wherein said rim and elongated opening extend completely around the central axis in a horizontal plane.
Claim 9
Dependent Claim
30 words
The self-cleaning spray head as recited in claim 6, wherein said fluid distributor is a ring made of rubber having a hardness in the range of 40 to 60 durometer.
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) | 1974-12-27 | 1975-06-28 | 1975-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-27 | 1979-06-28 | 1979-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-27 | 1983-06-28 | 1983-12-28 | $7700.00 | Window Closed / Lapsed |