US3983891A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vent valve
Assignee: Individual
•
Filing: 1975-05-07
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Granted: 1976-10-05
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Expires: 1995-05-07
Abstract
Abstract This invention relates to a vent valve having an elongated housing. The housing has an inlet port positioned below an outlet port when the housing is in an upright position. A passage connects the inlet and outlet parts. The passage construction provides free passage of gaseous fluid but restricts momentary liquid flow or splash when the housing is in an upright position. A ball valve in the passage restricts liquid flow when the housing is tilted more than 90° from its upright position.
Inventors
- 👤 John C. Shoemaker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:13
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/36; F16K17/366; Y; Y10; Y10T; Y10T137/00; Y10T137/0753; Y10T137/0874; Y10T137/8593; Y10T137/86292; Y10T137/86324
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
155 words
A vent valve comprising: an elongated housing having inlet and outlet ports, an elongated cylindrical passage formed in said housing and connecting said inlet and outlet ports; an elongated sleeve having a longitudinal slot formed therein being in said passage and defining an annular space therewith, a sleeve end being adjacent said inlet port: a disc member having at least one indented edge in the circumference thereof positioned in said inlet port and against said sleeve end with said disc covering the opening defined by said sleeve end; said edge defining an opening between said inlet port and said annular space; and said passage having a first internal diameter at the inlet end and a second internal diameter longitudinally spaced from said inlet end which is smaller than said first internal diameter, said sleeve being resiliently fitted into said second internal diameter, said annular space being defined between said sleeve and said first internal diameter.
Claim 2
Dependent Claim
155 words
A vent valve comprising: an elongated housing having inlet and outlet ports, an elongated cylindrical passage formed in said housing and connecting said inlet and outlet ports; an elongated sleeve having a longitudinal slot formed therein being in said passage and defining an annular space therewith, a sleeve end being adjacent said inlet port: a disc member having at least one indented edge in the circumference thereof positioned in said inlet port and against said sleeve end with said disc covering the opening defined by said sleeve end; said edge defining an opening between said inlet port and said annular space; and said passage having a first internal diameter at the inlet end and a second internal diameter longitudinally spaced from said inlet end which is smaller than said first internal diameter, said sleeve being resiliently fitted into said second internal diameter, said annular space being defined between said sleeve and said first internal diameter.
Claim 3
Dependent Claim
16 words
The vent valve of claim 1 with said indented edges being circumferentially spaced from said slot.
Claim 4
Dependent Claim
38 words
The vent valve of claim 1 with a ball seat being formed between said passage and said output port, a ball being in said sleeve and registrable with said ball seat to prevent liquid flow through said passage.
Claim 5
Dependent Claim
15 words
The vent valve of claim 1 with said outlet port comprising a right angle bore.
Claim 6
Dependent Claim
25 words
The vent valve of claim 1 with said disc having two diametrically opposite indented edges, each of said edges being circumferentially spaced from said slot.
Claim 7
Dependent Claim
16 words
The vent valve of claim 5 with said edges being angularly displaced 90° from said slot.
Claim 8
Dependent Claim
16 words
The vent valve of claim 1 with said housing being externally threaded along a portion thereof.
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) | 1979-10-05 | 1980-04-05 | 1980-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-05 | 1984-04-05 | 1984-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-05 | 1988-04-05 | 1988-10-05 | $7700.00 | Window Closed / Lapsed |