US3792607A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air leakage detector using a direct pressure system
Assignee: Individual
•
Filing: 1972-05-05
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Granted: 1974-02-19
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Expires: 1992-05-05
Abstract
Abstract An apparatus for the detection of both small and large leaks in articles. A test article and a reference article are each placed in separate receptacles, subject to a fluid pressure and the receptacles isolated from each other. Should a small leak be present a difference in pressure will appear between the two receptacles. For detecting large leaks, an additional receptacle is placed in communication with each of the receptacles and the pressure difference is checked.
Inventors
- 👤 A Fukuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:46
CPC Classifications
G; G01; G01M; G01M3/00; G01M3/02; G01M3/26; G01M3/32; G01M3/3281; G01M3/329; G04; G04D; G04D7/00; G04D7/006; G04D7/007
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A leakage detector comprising a source of air pressure other than atmospheric, a pressure regulating valve and a first cut-off valve connected in series to the air source; a conduit including two parallel branches connected to the first cut-off valve; each conduit branch including a second cut-off valve, an air tight receptacle, a third cut-off valve and a container sequentially connected therein; and a differential pressure thansducer for indicating the difference in pressure between the two receptacles; the two receptacles being of the same size and adapted to contain a test or reference piece and the two containers being the same size.
Claim 2
Dependent Claim
102 words
A leakage detector comprising a source of air pressure other than atmospheric, a pressure regulating valve and a first cut-off valve connected in series to the air source; a conduit including two parallel branches connected to the first cut-off valve; each conduit branch including a second cut-off valve, an air tight receptacle, a third cut-off valve and a container sequentially connected therein; and a differential pressure thansducer for indicating the difference in pressure between the two receptacles; the two receptacles being of the same size and adapted to contain a test or reference piece and the two containers being the same size.
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) | 1977-02-18 | 1977-08-20 | 1978-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-18 | 1981-08-20 | 1982-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-18 | 1985-08-20 | 1986-02-19 | $7700.00 | Window Closed / Lapsed |