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US3836083A Expired / Lapsed US ⏱️ 0.0 years remaining

Shower head with flow control washer

Assignee: Moen Inc
•
Filing: 1973-10-11
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Granted: 1974-09-17
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Expires: 1993-10-11
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Abstract

Abstract A flow control washer for use in a plumbing fixture such as a shower head is formed of a distortable rubberlike material and has a generally cylindrical shape. There are a plurality of independent water passages through the washer, with the passages being axially aligned. A distortable projection is positioned between each pair of passages. The pressure of water upon the washer causes the projections to distort, partially restricting the openings into the passages, thus controlling the flow of water through the plumbing fixture.

Inventors

  • 👤 F Bell

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-09 15:53
CPC Classifications
E; E03; E03C; E03C1/00; E03C1/02; E03C1/08; B; B05; B05B; B05B1/00; B05B1/30; B05B1/3006; E03C2001/026; E03C2001/082; Y; Y02; Y02A; Y02A20/00; Y02A20/40

Claims Analysis

Total Claims: 14
Claim 1
Independent Claim 91 words
A flow control washer for use in plumbing fixtures or the like including a generally cylindrical body formed of a distortable rubberlike material, a plurality of circumferentially arranged water passages extending axially through said body, a plurality of projections extending outwardly from at least one end of said body there being a projection generally adjacent each water passage, said projections being integral with said body and, under pressure, distorting to restrict the openings into said passages for controlling the flow of water through said passages with variations in applied water pressure.
Claim 2
Dependent Claim 91 words
A flow control washer for use in plumbing fixtures or the like including a generally cylindrical body formed of a distortable rubberlike material, a plurality of circumferentially arranged water passages extending axially through said body, a plurality of projections extending outwardly from at least one end of said body there being a projection generally adjacent each water passage, said projections being integral with said body and, under pressure, distorting to restrict the openings into said passages for controlling the flow of water through said passages with variations in applied water pressure.
Claim 3
Dependent Claim 19 words
The flow control washer of claim 1 further characterized in that said water passages all have the same diameter.
Claim 4
Dependent Claim 36 words
The flow control washer of claim 1 further characterized in that said water flow passages are generally equally circumferentially spaced, with all passages having their axes the same radial distance from the center of the body.
Claim 5
Dependent Claim 23 words
The flow control washer of claim 3 further characterized in that there is a projection positioned between each pair of adjacent water passages.
Claim 6
Dependent Claim 45 words
The flow control washer of claim 4 further characterized in that the center of each projection is generally on a circle whose center is the center of the body and whose radius is equal to the radial distance of the passage axes from the center.
Claim 7
Dependent Claim 34 words
The flow control washer of claim 1 further characterized in that the ends of said body are symmetrical, there being an equal number of projections, similarly spaced, extending from both ends of the body.
Claim 8
Dependent Claim 20 words
The flow control washer of claim 1 further characterzed by differently sized projections extending from opposite ends of said body.
Claim 9
Dependent Claim 181 words
A shower head including a spray forming assembly, means for attaching said spray forming assembly to a water conduit including a mounting member, means formed adjacent one end of said mounting member for attaching it to a conduit, an opening in the opposite end of said mounting member, a cylindrical chamber formed in said mounting member adjacent said opening, a flow control washer positioned within said cylindrical chamber and adjacent said opening, said flow control washer including a generally cylindrical body formed of a distortable rubberlike material, a plurality of circumferentially arranged water passages extending axially through said body and in communication with said mounting member opening, a plurality of projections extending outwardly from both ends of said body, there being a projection generally adjacent each water passage, said body being symmetrical with the projections on opposite ends being similarly arranged, said projections being integral with said body and distortable under pressure to restrict the openings into said passages for controlling the flow of water through said passages with variations in water pressure applied to the upstream end of the body.
Claim 10
Dependent Claim 181 words
A shower head including a spray forming assembly, means for attaching said spray forming assembly to a water conduit including a mounting member, means formed adjacent one end of said mounting member for attaching it to a conduit, an opening in the opposite end of said mounting member, a cylindrical chamber formed in said mounting member adjacent said opening, a flow control washer positioned within said cylindrical chamber and adjacent said opening, said flow control washer including a generally cylindrical body formed of a distortable rubberlike material, a plurality of circumferentially arranged water passages extending axially through said body and in communication with said mounting member opening, a plurality of projections extending outwardly from both ends of said body, there being a projection generally adjacent each water passage, said body being symmetrical with the projections on opposite ends being similarly arranged, said projections being integral with said body and distortable under pressure to restrict the openings into said passages for controlling the flow of water through said passages with variations in water pressure applied to the upstream end of the body.
Claim 11
Dependent Claim 18 words
The shower head of claim 8 further characterized in that said water passages all have the same diameter.
Claim 12
Dependent Claim 35 words
The shower head of claim 8 further characterized in that said water flow passages are generally equally circumferentially spaced, with all passages having their axes the same radial distance from the center of the body.
Claim 13
Dependent Claim 22 words
The shower head of claim 10 further characterized in that there is a projection positioned between each pair of adjacent water passages.
Claim 14
Dependent Claim 44 words
The shower head of claim 11 further characterized in that the center of each projectiOn is generally on a circle shoe center is the center of the body and whose radius is equal to the radial distance of the passage axes from the center.

References Cited (Backward Citations)

US24534A Cited
US2559894A Cited
US2680043A Cited
US2948300A Cited
US3592237A Cited
US3693888A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-09-16 1978-03-18 1978-09-17 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-09-16 1982-03-18 1982-09-17 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-09-16 1986-03-18 1986-09-17 $7700.00 Window Closed / Lapsed

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