Patent US3697002A successfully refreshed from Google Patents.
US3697002A
Expired / Lapsed
US
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Flow control device
Assignee: Trane US Inc
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Filing: 1971-07-21
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Granted: 1972-10-10
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Expires: 1991-07-21
Abstract
Abstract Covers a fluid flow device or pressure regulator suitable for a spout-end structure for a plumbing fitting or fixture. The equipment includes two tandem arranged disk structures to be inserted in the spout-end to control the flow through the spoutend. The upstream element comprises a substantially flat cylindrical flexible disk having a plurality of substantially identical cylindrical parallel apertures. The downstream element comprises a hard metallic or plastic disk having a plurality of hard substantially non-flexible projections which may be located in the central region of the disk, a plurality of parallel substantially identical apertures which are peripherally arranged about the projections of the disk and a plurality of supports or barriers near the several projections. The two disks are positioned closely adjacent or contiguous to each other so that, in the absence of fluid pressure or under low fluid pressure conditions, the hard or non-flexible projections on the hard or lower disk barely contact the adjacent surface of the upstream or upper flexible disk. As the fluid pressure reaches a predetermined value or exceeds the predetermined value, the projections on the second or hard disk will remain rigid and unchanged in shape, but the upper flexible disk will be compressed so that the overall area of the apertures of the first disk through which fluid flows will be reduced so that the fluid flow through the two disks will remain substantially unchanged, notwithstanding changes in the pressure of the applied fluid however rapid or however slow.
Inventors
- 👤 Richard G Parkison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:50
CPC Classifications
E; E03; E03C; E03C1/00; E03C1/02; E03C1/08; B; B05; B05B; B05B1/00; B05B1/30; B05B1/3006; E03C2001/026; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7784; Y10T137/7792
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
105 words
A pressure regulator for a plumbing fitting comprising a first cylindrical disk made of flexible material and having a plurality of substantially identical apertures through which fluid may flow, a second cylindrical disk made of inflexible material and having a plurality of point-like inflexible projections which abut the apertures of the first disk, said second disk also having a plurality of apertures, the first disk being compressed in response to fluid pressure exceeding a predetermined magnitude and its apertures receiving the projections of the second disk to maintain a substantially constant fluid flow through the pressure regulator as the fluid pressure exceeds the predetermined magnitude.
Claim 2
Dependent Claim
105 words
A pressure regulator for a plumbing fitting comprising a first cylindrical disk made of flexible material and having a plurality of substantially identical apertures through which fluid may flow, a second cylindrical disk made of inflexible material and having a plurality of point-like inflexible projections which abut the apertures of the first disk, said second disk also having a plurality of apertures, the first disk being compressed in response to fluid pressure exceeding a predetermined magnitude and its apertures receiving the projections of the second disk to maintain a substantially constant fluid flow through the pressure regulator as the fluid pressure exceeds the predetermined magnitude.
Claim 3
Dependent Claim
16 words
A pressure regulator according to claim 1, in which the flexible material is formed of rubber.
Claim 4
Dependent Claim
24 words
A pressure regulator according to claim 2 in which the apertures of the first disk are non-aligned with the apertures of the second disk.
Claim 5
Dependent Claim
18 words
A pressure regulator according to claim 2, including a screen positioned upstream of said first and second disks.
Claim 6
Dependent Claim
22 words
A pressure regulator according to claim 2, in which the second disk has a collar for receiving and retaining the first disk.
Claim 7
Dependent Claim
105 words
A pressure regulator for a plumbing structure, comprising means responding to fluid pressures exceeding a predetermined magnitude to maintain substantially uniform fluid flow through the regulator, said means comprising a first flexible and deformable disk and a second rigid disk, the first disk having a plurality of parallel openings, the second disk also having a plurality of parallel openings and a plurality of projections abutting one of the surfaces of the first disk, each of the projections being adjacent to an opening of the first disk and being partially insertable into said opening in the first disk in response to deformations of the first disk.
Claim 8
Dependent Claim
105 words
A pressure regulator for a plumbing structure, comprising means responding to fluid pressures exceeding a predetermined magnitude to maintain substantially uniform fluid flow through the regulator, said means comprising a first flexible and deformable disk and a second rigid disk, the first disk having a plurality of parallel openings, the second disk also having a plurality of parallel openings and a plurality of projections abutting one of the surfaces of the first disk, each of the projections being adjacent to an opening of the first disk and being partially insertable into said opening in the first disk in response to deformations of the first disk.
Claim 9
Dependent Claim
23 words
A pressure regulator for a plumbing structure according to claim 6, in which the first disk is formed as a slab of rubber.
Claim 10
Dependent Claim
24 words
A pressure regulator according to claim 7 in which the apertures of the first disk are unaligned with the apertures of the second disk.
Claim 11
Dependent Claim
21 words
A pressure regulator according to claim 8 including means for holding said first and second disks in juxtaposition with each other.
Claim 12
Dependent Claim
17 words
A pressure regulator according to claim 7, including a screen upstream of said first and second disks.
Claim 13
Dependent Claim
89 words
A fluid for control apparatus comprising a flexible slab of rubber having a plurality of apertures, mEans for maintaining the flow through said slab substantially unchanged when the applied fluid pressure exceeds a predetermined value, said means comprising a rigid disk having apertures and having a plurality of inflexible projections which may be adjacent the apertures of the rubber slab, the rubber slab being compressed against said projections when the fluid pressure exceeds a predetermined value so that said projections may partially enter the apertures of the rubber slab.
Claim 14
Dependent Claim
89 words
A fluid for control apparatus comprising a flexible slab of rubber having a plurality of apertures, mEans for maintaining the flow through said slab substantially unchanged when the applied fluid pressure exceeds a predetermined value, said means comprising a rigid disk having apertures and having a plurality of inflexible projections which may be adjacent the apertures of the rubber slab, the rubber slab being compressed against said projections when the fluid pressure exceeds a predetermined value so that said projections may partially enter the apertures of the rubber slab.
Claim 15
Dependent Claim
24 words
A fluid flow control apparatus according to claim 11 in which the rigid disk has a collar for receiving and supporting the rubber slab.
Claim 16
Dependent Claim
22 words
A fluid flow control apparatus according to claim 12 which includes a screen upstream of the rubber slab and the rigid disk.
Claim 17
Dependent Claim
35 words
A fluid flow control apparatus according to claim 11 in which the rigid disk has a plurality of barriers interposed between the apertures of the slab of rubber and the apertures of the rigid disk.
Claim 18
Dependent Claim
44 words
A fluid flow control apparatus according to claim 11 having a plurality of barriers for supporting the slab of rubber on the rigid disk and also for forming obstacles between the apertures of the slab of rubber and the apertures of the rigid disk.
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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) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |