US3894302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-venting fitting
Assignee: TYLER PIPE IND Inc
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Filing: 1974-02-14
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Granted: 1975-07-15
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Expires: 1994-02-14
Abstract
Abstract The present invention relates to fittings and in particular to a fitting comprising a hollow body section having an outlet at its lower end, tubular members connected to the upper end of the body to introduce streams of fluid into the body, fluid directing means provided in the fitting for projecting the incoming streams onto the adjacent portions of the upper part of the inner surface of the body wall so that the fluid can form a wall-hung tube as it flows through the body.
Inventors
- 👤 John A Lasater
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:30
CPC Classifications
E; E03; E03C; E03C1/00; E03C1/12; E03C1/122; E03C1/1222; E03C1/1225
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
187 words
A fitting for use in a drain stack, said fitting comprising: a main body section having a passageway therethrough, said passageway being defined by an inner surface of a body wall and having upper and lower ends and a central longitudinal axis, said lower end of said passageway providing an outlet for said fitting; at least two tubular members each having a first end inside said fitting connected to said main body section in open communication with said upper end of said passageway, any two of said first ends being at opposite sides of a common partitioning wall lying in a plane passing through said axis of said passageway; and wherein the internal cross-sectional configuration of said first end of each of said tubular members transverse to said axis of said passageway is elongated in the general direction of said common partitioning wall; the elongated configuration of said first ends tending to direct fluid flowing therethrough toward said inner surface of said body wall so as to be conducive to a wall-hugging effect in said fluid as it passes through said passageway of said main body section.
Claim 2
Dependent Claim
187 words
A fitting for use in a drain stack, said fitting comprising: a main body section having a passageway therethrough, said passageway being defined by an inner surface of a body wall and having upper and lower ends and a central longitudinal axis, said lower end of said passageway providing an outlet for said fitting; at least two tubular members each having a first end inside said fitting connected to said main body section in open communication with said upper end of said passageway, any two of said first ends being at opposite sides of a common partitioning wall lying in a plane passing through said axis of said passageway; and wherein the internal cross-sectional configuration of said first end of each of said tubular members transverse to said axis of said passageway is elongated in the general direction of said common partitioning wall; the elongated configuration of said first ends tending to direct fluid flowing therethrough toward said inner surface of said body wall so as to be conducive to a wall-hugging effect in said fluid as it passes through said passageway of said main body section.
Claim 3
Dependent Claim
50 words
A fitting according to claim 1 wherein said tubular members each have a second end pRoviding an inlet for said fitting and wherein the flow axis of the inlet of a first one of said tubular members is substantially parallel to the flow axis of said outlet of said fitting.
Claim 4
Dependent Claim
38 words
A fitting according to claim 2 wherein the flow axes of the inlets of the others of said tubular members are substantially normal to the flow axis of the inlet of said first one of said tubular members.
Claim 5
Dependent Claim
65 words
A fitting according to claim 1 further comprising a deflector supported in said fitting and having a deflecting surface convex in a plane transverse to the flow axis of said outlet, said deflecting surface being disposed so as to direct fluids flowing through the first ends of said tubular members toward a portion of the inner surface of said body wall adjoining said first ends.
Claim 6
Dependent Claim
21 words
A fitting according to claim 4 wherein said deflector is cone-shaped and has its base facing and centered over said outlet.
Claim 7
Dependent Claim
44 words
A fitting according to claim 3 wherein the internal cross-sectional configuration of the second end of each of said tubular members is substantially circular, and wherein said tubular members are smoothly graduated in internal cross-sectional configuration from said first ends to said second ends.
Claim 8
Dependent Claim
44 words
A fitting according to claim 1 wherein said internal cross-sectional configuration of said first end of each of said tubular members is defined by two radii of said upper end of said passageway and an included arc defined by said inner surface body wall.
Claim 9
Dependent Claim
46 words
A fitting according to claim 7 having only two such tubular members and wherein said upper end of said passageway is generally oval in cross-sectional configuration and wherein said internal cross-sectional configuration of said first end of each of said tubular members is a half oval.
Claim 10
Dependent Claim
47 words
A fitting according to claim 7 having three such tubular members wherein said upper end of said passageway is generally circular in cross-sectional configuration and wherein said internal cross-sectional configuration of said first end of each of said tubular members is a one-third sector of a circle.
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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) | 1978-07-14 | 1979-01-13 | 1979-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-14 | 1983-01-13 | 1983-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-14 | 1987-01-13 | 1987-07-15 | $7700.00 | Window Closed / Lapsed |