US3867963A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulsation reducer
Assignee: Individual
•
Filing: 1973-02-06
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Granted: 1975-02-25
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Expires: 1993-02-06
Abstract
Abstract A pulsation reducer for smoothing out the flow from the output of a positive displacement pump consists of one or more Belleville springs having a piston plate to cover the centre hole of the Belleville spring set into one or more openings in a fluid container. Means is provided to hold the Belleville springs in the openings with the apex side of the Belleville spring extending into the opening. A fluid sealing elastomeric diaphragm is disposed over the piston plate, and the Belleville spring in sealing relationship with the opening in the body of the fluid container. The Belleville springs deflect outwardly responsive to fluid pressure within the container, and fluctuations in pressure within the container cause variations in the deflection of the Belleville spring thereby providing a variable volume within the pulsation reducer.
Inventors
- 👤 Allan Ballard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:19
CPC Classifications
F; F17; F17D; F17D1/00; F17D1/20; F16; F16L; F16L55/00; F16L55/04; F16L55/045; F16L55/05; F16L55/052; F16L55/053; F16L55/054; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/85978; Y10T137/86035; Y10T137/86043
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
164 words
A resilient wall structure means for use in an apertured housing for reducing the intensity of pressure variations in a fluid system which is subject to pulsating fluid pressure comprising; at least one generally resilient frusto-conically shaped apertured spring washer having its peripheral edge resiliently mounted in said apertured housing and having a convex side toward an internal portion of the housing, a plate means supported in aperture covering load bearing relation by inner portions of the convex side of said at least one apertured spring washer, and means operatively, interconnecting said at least one apertured spring washer and said plate means to retain said plate means generally concentric in said aperture covering relation against said at least one apertured spring washer, and to permit relative pivotal and radial movement therebetween on initial axial displacement and oscillation of said plate means under the influence of the pulsating fluid pressure and with respect to said peripheral edge of said at least one apertured spring washer.
Claim 2
Dependent Claim
164 words
A resilient wall structure means for use in an apertured housing for reducing the intensity of pressure variations in a fluid system which is subject to pulsating fluid pressure comprising; at least one generally resilient frusto-conically shaped apertured spring washer having its peripheral edge resiliently mounted in said apertured housing and having a convex side toward an internal portion of the housing, a plate means supported in aperture covering load bearing relation by inner portions of the convex side of said at least one apertured spring washer, and means operatively, interconnecting said at least one apertured spring washer and said plate means to retain said plate means generally concentric in said aperture covering relation against said at least one apertured spring washer, and to permit relative pivotal and radial movement therebetween on initial axial displacement and oscillation of said plate means under the influence of the pulsating fluid pressure and with respect to said peripheral edge of said at least one apertured spring washer.
Claim 3
Dependent Claim
48 words
A device as claimed in claim 1 wherein said means operatively interconnecting said at least one apertured spring washer and said plate means includes means extending through the aperture in said at least one apertured spring washer, and in engagement with inner portions of the concave side thereof.
Claim 4
Dependent Claim
43 words
A device as claimed in claim 1 wherein said means operatively interconnecting said at least one apertured spring washer and said plate means includes a disc in engagement with inner portions of the concave side of said at least one apertured spring washer.
Claim 5
Dependent Claim
55 words
A device as claimed in claim 3 wherein said disc is stepped to provide at least one shoulder which extends into the aperture of said at least one apertured spring washer, and is attached to said plate to secure said at least one apertured spring washer, said plate, and said disc together in concentric relation.
Claim 6
Dependent Claim
52 words
A device as claimed in claim 3 wherein a portion of at least one of said plate means or said disc extends into the aperture of said at least one said apertured spring washer to hold said cover plate and said at least one apertured spring washer together in generally concentric relation.
Claim 7
Dependent Claim
56 words
A device as claimed in claim 1 wherein said means operatively interconnecting said plate and said at least one apertured spring washer includes an elastomeric diaphragm molded to conform to the exposed surfaces on the convex side of said resilient wall structure to retain said plate and said at least one apertured spring washer generally concentric.
Claim 8
Dependent Claim
32 words
A device as claimed in claim 6 wherein said elastomeric diaphragm includes an axially extending sealing flange portion at its outer periphery for sealing engagement in an opening in said fluid system.
Claim 9
Dependent Claim
35 words
A device as claimed in claim 1 wherein said at least one apertured spring washer is a Belleville spring having a free height cone height to thickness ration within the range of 0.4 to 1.41.
Claim 10
Independent Claim
245 words
A device for reducing the intensity of pressure variations in a fluid system which is subject to pulsating fluid pressure comprising: a fluid containing body member having at least one fluid connection to permit fluid to flow in and out of said device, at least one resilient wall structure means disposed in an opening in said body member, said resilient walL structure including at least one resilient frustro-conically shaped apertured spring washer having its peripheral edge resiliently mounted in said opening in said body member, and having a convex side disposed toward an internal portion of the body member, a plate means supported in aperture covering load bearing relation by inner portions of the convex side of said at least one apertured spring washer, and means operatively interconnecting said at least one apertured spring washer and said plate means to retain said plate means generally concentric in said aperture covering relation against said at least one apertured spring washer, and sealing means disposed in sealing relation in said opening in said body member between said body member and said resilient wall structure to retain fluid within said body member, and means to secure the outer periphery of said resilient wall structure in fixed axial relation in said opening in said body member so that in use, said at least one resilient wall structure will deflect outwardly to a mean position, and oscillate in and out relative to the mean position, responsive to fluid pressure variations.
Claim 11
Independent Claim
245 words
A device for reducing the intensity of pressure variations in a fluid system which is subject to pulsating fluid pressure comprising: a fluid containing body member having at least one fluid connection to permit fluid to flow in and out of said device, at least one resilient wall structure means disposed in an opening in said body member, said resilient walL structure including at least one resilient frustro-conically shaped apertured spring washer having its peripheral edge resiliently mounted in said opening in said body member, and having a convex side disposed toward an internal portion of the body member, a plate means supported in aperture covering load bearing relation by inner portions of the convex side of said at least one apertured spring washer, and means operatively interconnecting said at least one apertured spring washer and said plate means to retain said plate means generally concentric in said aperture covering relation against said at least one apertured spring washer, and sealing means disposed in sealing relation in said opening in said body member between said body member and said resilient wall structure to retain fluid within said body member, and means to secure the outer periphery of said resilient wall structure in fixed axial relation in said opening in said body member so that in use, said at least one resilient wall structure will deflect outwardly to a mean position, and oscillate in and out relative to the mean position, responsive to fluid pressure variations.
Claim 12
Dependent Claim
28 words
A device as claimed in claim 9 wherein said sealing means includes an elastomeric diaphragm disposed over the convex side of said at least one resilient wall structure.
Claim 13
Dependent Claim
58 words
A device as claimed in claim 9 wherein said fluid containing body member is provided with at least two axially opposed openings to receive said resilient wall structures so that on being subject to pressure variations, acceleration forces exerted on and by the opposed resilient wall structures are equal and opposite to thereby provide a dynamically balanced device.
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) | 1978-02-24 | 1978-08-26 | 1979-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-24 | 1982-08-26 | 1983-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-24 | 1986-08-26 | 1987-02-25 | $7700.00 | Window Closed / Lapsed |