Patent US4532959A successfully refreshed from Google Patents.
US4532959A
Expired / Lapsed
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Valving element for a plate-type valve
Assignee: Ingersoll Rand Co
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Filing: 1984-01-16
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Granted: 1985-08-06
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Expires: 2004-01-16
Abstract
Abstract The valving element, according to the first embodiment depicted, comprises a plate-type element having an undulated or scalloped edge or periphery. The plate-type element has a plurality of flow ports formed therein each of which subtends an arc drawn from the radial center of the element. The ends of the ports, which otherwise would be subject to fatigue, failure and fracture, are spaced further from the edge than in prior art practice. Accordingly, the shock of impact of the plate-type element on opening or closing is less likely to precipitate fatigue and failure of the port ends. Additionally, at a plurality of locations about the periphery, the plate-type element has linear portions; upon the plate-type element impacting on any of these linear portions, it will make a line contact which more readily disperses the impact shock.
Inventors
- 👤 Kevin Hartshorn
- 👤 Wallace A. McGahan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:32
CPC Classifications
F; F04; F04B; F04B39/00; F04B39/10; F04B39/1053; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7859; Y10T137/786; Y10T137/7861
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
87 words
A valving element for a plate type valve, comprising: a plate; said plate having (a) apertures formed therein for the conduct of fluid therethrough, (b) a given center, and (c) an outer periphery defining the outermost edge of said plate; wherein said apertures subtend given arcs drawn from said given center; and given ones of said apertures each having a first portion intermediate the length thereof which is more proximate to said edge than are other portions thereof which subsist at either sides of said first portion.
Claim 2
Dependent Claim
87 words
A valving element for a plate type valve, comprising: a plate; said plate having (a) apertures formed therein for the conduct of fluid therethrough, (b) a given center, and (c) an outer periphery defining the outermost edge of said plate; wherein said apertures subtend given arcs drawn from said given center; and given ones of said apertures each having a first portion intermediate the length thereof which is more proximate to said edge than are other portions thereof which subsist at either sides of said first portion.
Claim 3
Dependent Claim
58 words
A valving element, according to claim 1, wherein: said given ones of said apertures each have surfaces, adjacent opposite ends thereof, which are tangent to a straight line drawn between said surfaces; and respective sections of said edge, which are most adjacent to said given ones of said apertures, are straight and are parallel with said drawn lines.
Claim 4
Dependent Claim
24 words
A valving element, according to claim 1, wherein: sections of said edge are arcuately formed from radial centers spaced apart from said given center.
Claim 5
Dependent Claim
37 words
A valving element, according to claim 1, wherein: sections of said edge are linear; and said first portions of said given ones of said apertures are more proximate, as aforesaid, to said linear sections of said edge.
Claim 6
Dependent Claim
53 words
A valving element, according to claim 4, wherein: each of said linear sections of said edge join others thereon through intervening sectors of said plate; each of said intervening sectors terminates in a portion of said edge which has an arcuate conformation drawn from a radial center located outward from said given center.
Claim 7
Dependent Claim
21 words
A valving element, according to claim 5, wherein: said sectors encompass areas of said plate which are substantially devoid of apertures.
Claim 8
Dependent Claim
65 words
A valving element for a plate type valve, comprising: a plate; said plate having (a) apertures formed therein for conduct of fluid therethrough, (b) a given center, and (c) an outermost periphery; and said periphery is defined, at least in part, by a plurality of radii drawn from radial centers which are located inwardly of said periphery and are spaced apart from said given center.
Claim 9
Dependent Claim
65 words
A valving element for a plate type valve, comprising: a plate; said plate having (a) apertures formed therein for conduct of fluid therethrough, (b) a given center, and (c) an outermost periphery; and said periphery is defined, at least in part, by a plurality of radii drawn from radial centers which are located inwardly of said periphery and are spaced apart from said given center.
Claim 10
Dependent Claim
27 words
A valving element, according to claim 7, wherein: said plate has a maximum outside diameter; and given portions of said periphery comprise dedendums relative to said diameter.
Claim 11
Dependent Claim
27 words
A valving element, according to claim 7, wherein: said plate has a minimum outside diameter; and prescribed portions of said periphery comprise addendums relative to said diameter.
Claim 12
Dependent Claim
21 words
A valving element, according to claim 7, wherein: said apertures are of arcuate configuration and are concentric with said given center.
Claim 13
Dependent Claim
89 words
A valving element for a plate type valve, comprising: a plate; said plate having (a) apertures formed therein for conduct of fluid therethrough, (b) a given center, and (c) an outermost periphery; and said periphery is defined, at least in part, by a plurality of radii drawn from radial centers which are spaced apart from said given center; wherein said plate has a maximum outside diameter; given portions of said periphery comprise dedendums relative to said diameter; and said given portions each define substantially linear edges of said plate.
Claim 14
Dependent Claim
89 words
A valving element for a plate type valve, comprising: a plate; said plate having (a) apertures formed therein for conduct of fluid therethrough, (b) a given center, and (c) an outermost periphery; and said periphery is defined, at least in part, by a plurality of radii drawn from radial centers which are spaced apart from said given center; wherein said plate has a maximum outside diameter; given portions of said periphery comprise dedendums relative to said diameter; and said given portions each define substantially linear edges of said plate.
Claim 15
Dependent Claim
147 words
A valving element for a plate-type valve, comprising: a substantially circular plate; said plate having apertures formed therein for the conduct of fluid therethrough, (b) a given center, and (c) an outer periphery defining the outermost edge of said plate; wherein said apertures comprise flow ports which subtend arcs drawn from said given center; said ports each having a first section intermediate the length thereof, and second and third sections at opposite ends thereof; said outermost edge of said plate has given portions thereof which are more proximate to at least one of said first, second and third sections of said ports than to others of said sections; and each of said more proximate, given portions of said edge defines means, responsive to a closure thereof onto a flat surface, for causing said portion to impact, with such a flat surface, only with a full line contact.
Claim 16
Dependent Claim
147 words
A valving element for a plate-type valve, comprising: a substantially circular plate; said plate having apertures formed therein for the conduct of fluid therethrough, (b) a given center, and (c) an outer periphery defining the outermost edge of said plate; wherein said apertures comprise flow ports which subtend arcs drawn from said given center; said ports each having a first section intermediate the length thereof, and second and third sections at opposite ends thereof; said outermost edge of said plate has given portions thereof which are more proximate to at least one of said first, second and third sections of said ports than to others of said sections; and each of said more proximate, given portions of said edge defines means, responsive to a closure thereof onto a flat surface, for causing said portion to impact, with such a flat surface, only with a full line contact.
Claim 17
Dependent Claim
24 words
A valving element, according to claim 12, wherein: said given portions of said edge are more proximate to said first sections of said ports.
Claim 18
Dependent Claim
28 words
A valving element, according to claim 12, wherein: said given portions of said edge are more proximate to one of said second and third sections of said ports.
Claim 19
Dependent Claim
134 words
A valving element for a plate type valve, comprising: a plate; said plate having (a) apertures formed therein for conduct of fluid therethrough, (b) a given center, and (c) an outermost periphery; and said periphery is defined, at least in part, by a plurality of radii drawn from radial centers which are spaced apart from said given center; wherein said plate further has a first, central, circular area, having a given circumference; said circumference has a radius drawn from said given center; said plate further has a second, outer, annular area integral with, and in circumscription of, said first area; said periphery comprises an outermost edge of said plate; said radial centers are traversed by said circumference; and said radii of said plurality thereof define said second area with a plurality of spaced-apart sectors.
Claim 20
Dependent Claim
134 words
A valving element for a plate type valve, comprising: a plate; said plate having (a) apertures formed therein for conduct of fluid therethrough, (b) a given center, and (c) an outermost periphery; and said periphery is defined, at least in part, by a plurality of radii drawn from radial centers which are spaced apart from said given center; wherein said plate further has a first, central, circular area, having a given circumference; said circumference has a radius drawn from said given center; said plate further has a second, outer, annular area integral with, and in circumscription of, said first area; said periphery comprises an outermost edge of said plate; said radial centers are traversed by said circumference; and said radii of said plurality thereof define said second area with a plurality of spaced-apart sectors.
Claim 21
Dependent Claim
17 words
A valving element, according to claim 15, wherein: said sectors extend through approximately fifty degrees of arc.
Claim 22
Dependent Claim
72 words
A valving element, according to claim 15, wherein: each of said sectors is defined by an arc which intersects another such arc, of another, adjacent one of said sectors, at a prescribed point on said second area; and an imaginary, radial line, drawn radially outward from said given center and through said prescribed point, traverses an outermost one of said apertures substantially across a midpoint of the length of said one aperture.
Claim 23
Dependent Claim
49 words
A valving element, according to claim 15, wherein: said radii of said plurality thereof define said edge with a plurality of spaced-apart, arcuate lobes; said edge has a plurality of linear portions; and adjacent ones of said lobes are joined therebetween by an intervening one of said linear portions.
Claim 24
Dependent Claim
30 words
A valving element, according to claim 18, wherein: each of said intervening, linear portions of said edge is tangent to those of said adjacent lobes which said linear portion joins.
Claim 25
Dependent Claim
15 words
A valving element, according to claim 18, wherein: said lobes number in excess of four.
Claim 26
Dependent Claim
18 words
A valving element, according to claim 18, wherein: said lobes, in sum total, are of an even number.
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) | 1988-08-05 | 1989-02-04 | 1989-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-08-05 | 1993-02-04 | 1993-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-08-05 | 1997-02-04 | 1997-08-06 | $7700.00 | Window Closed / Lapsed |