Patent US3987809A successfully refreshed from Google Patents.
US3987809A
Expired / Lapsed
US
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Fluid resistance device
Assignee: Dresser Industries Inc
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Filing: 1975-02-14
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Granted: 1976-10-26
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Expires: 1995-02-14
Abstract
Abstract A fluid resistance device being part of a fluid system and having high resistance, fluid energy absorbing passages along the interface between a ringtype member and a cylindrical male insert, and wherein said passages consist of a number of teeth-like baffles which are off-set from each other and which are separated from each other by circular grooves providing nearly rectangular throttling restrictions in series for the fluid passing generally along the longitudinal axis of the male insert.
Inventors
- 👤 Hans D. Baumann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:14
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/02; F16L55/027; F16L55/02709; F16L55/02718; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86718; Y10T137/86734
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
260 words
In a fluid system, a fluid resistance device comprising a female member having a cylindrical opening therethrough; a cylindrical male insert, said female member and cylindrical male insert having ends, said cylindrical male insert received within and engaged at said cylindrical opening of said female member, said male insert and female member constituting parts of, and defining at their ends inlet and outlet sections within, said fluid system; means forming a continuous, tortuous fluid path between said female member and male insert, said fluid path arranged generally vertically of, and extending the full engaged length of, said female member and male insert, and thereby conducting fluid flow from said inlet section to said outlet section, said fluid path forming means comprising annular means defining vertically repeating layers of horizontal baffles, said horizontal baffles having widths and formed and spaced by vertically repeating layers of horizontal recesses in said annular means, said horizontal recesses having widths, and means vertically separating said horizontal baffle layers and forming therebetween horizontal circular channels having cross-sectional areas, the cross-sectional area of said channels between said layers being such, in relation to the cross-sectional area of said recesses between said baffles, as to form throttling restrictions in series through which said fluid flow through said tortuous path is successively accelerated, and said baffle widths being related to said recess widths and said baffle layers being successively oppositely angularly offset from the vertically adjacent baffle layer or layers such that said fluid flow through said tortuous path is continuously reversing between and around alternately vertically overlying baffles.
Claim 2
Dependent Claim
260 words
In a fluid system, a fluid resistance device comprising a female member having a cylindrical opening therethrough; a cylindrical male insert, said female member and cylindrical male insert having ends, said cylindrical male insert received within and engaged at said cylindrical opening of said female member, said male insert and female member constituting parts of, and defining at their ends inlet and outlet sections within, said fluid system; means forming a continuous, tortuous fluid path between said female member and male insert, said fluid path arranged generally vertically of, and extending the full engaged length of, said female member and male insert, and thereby conducting fluid flow from said inlet section to said outlet section, said fluid path forming means comprising annular means defining vertically repeating layers of horizontal baffles, said horizontal baffles having widths and formed and spaced by vertically repeating layers of horizontal recesses in said annular means, said horizontal recesses having widths, and means vertically separating said horizontal baffle layers and forming therebetween horizontal circular channels having cross-sectional areas, the cross-sectional area of said channels between said layers being such, in relation to the cross-sectional area of said recesses between said baffles, as to form throttling restrictions in series through which said fluid flow through said tortuous path is successively accelerated, and said baffle widths being related to said recess widths and said baffle layers being successively oppositely angularly offset from the vertically adjacent baffle layer or layers such that said fluid flow through said tortuous path is continuously reversing between and around alternately vertically overlying baffles.
Claim 3
Dependent Claim
67 words
The fluid resistance device of claim 1, wherein said annular means comprise plates having baffle forming recesses at a circular surface, said recesses having inner and outer portions, and wherein said circular channel forming means comprise spacer rings covering at least one of said inner and outer portions of said recesses, and thereby forming said throttling restrictions as essentially rectangular horizontal orifices between said vertically overlying baffles.
Claim 4
Dependent Claim
42 words
The fluid resistance device of claim 1, wherein said horizontal circular channels are of progressively increasing depth toward said outlet section, and thereby progressively increase the areas of said restrictions in series to allow for volumetric expansion of the fluid passing therethrough.
Claim 5
Dependent Claim
42 words
The fluid resistance device of claim 1, wherein said horizontal circular channels are of progressively increasing height towards said outlet section, and thereby progressively increase the areas of said restrictions in series to allow for volumetric expansion of the fluid passing therethrough.
Claim 6
Dependent Claim
28 words
The fluid resistance device of claim 1, wherein said baffle layers comprise like plates having each a cylindrical periphery characterized by like teeth equally spaced by like recesses.
Claim 7
Dependent Claim
21 words
The fluid resistance device of claim 1, wherein said baffles, channels and recesses are precision formed in a single cast piece.
Claim 8
Dependent Claim
71 words
The fluid resistance device of claim 1, wherein said horizontal baffles have flanks along said recesses, and wherein the offsetting of said baffle layers is such as to vertically overlie the opposite flanks of the successive layer baffles, whereby said series restrictions extend vertically of the device, and whereby the reversing flow of said fluid through said tortuous passage is by reversely repeating vertical-to-horizontal turns from said recesses into said restrictions.
Claim 9
Dependent Claim
51 words
The fluid resistance of claim 1, wherein the construction and offsetting of said baffle layers is such as to vertically overlie the baffles of every second layer, whereby in its flow through said tortuous passage said fluid divides and recombines through restrictions formed by alternate layer baffles underlying alternate layer recesses.
Claim 10
Dependent Claim
15 words
The fluid resistance device of claim 5, wherein said cylindrical periphery is an inner periphery.
Claim 11
Dependent Claim
15 words
The fluid resistance device of claim 5, wherein said cylindrical periphery is an outer periphery.
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) | 1979-10-26 | 1980-04-26 | 1980-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-26 | 1984-04-26 | 1984-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-26 | 1988-04-26 | 1988-10-26 | $7700.00 | Window Closed / Lapsed |