Patent US3625219A successfully refreshed from Google Patents.
US4185641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure dome
Assignee: HP Inc
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Filing: 1978-08-23
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Granted: 1980-01-29
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Expires: 1998-08-23
Abstract
Abstract A pressure dome is provided with resilient tongues that engage projections on a transducer in such manner as to draw the dome and transducer together when one is rotated with respect to the other. Detent notches for the projection ensure that the force between a dome and the transducer is always the same.
Inventors
- 👤 Thaddeus G. Minior
- 👤 Alexander Tykulsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:42
CPC Classifications
A; A61; A61M; A61M1/00; A61M1/36; A61M1/3621; A61M1/3639; A61M1/3641; G; G01; G01L; G01L9/00; G01L9/0041; G01L9/0042; G01L9/0044
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
104 words
A pressure dome for attachment to a transducer having outwardly extending projections, comprising a body having a hollow formed therein, a flexible membrane, means mounting said membrane across said hollow so as to form a space therebetween, ports extending through said body so as to provide access to said hollow from a point outside said body, and resilient tongues extending from said body on the side opposite said membrane from said hollow, said tongues lying within a cylinder having an axis perpendicular to said membrane and having ramps sloping toward said membrane from their ends and means defining detent notches next to said ramps.
Claim 2
Dependent Claim
104 words
A pressure dome for attachment to a transducer having outwardly extending projections, comprising a body having a hollow formed therein, a flexible membrane, means mounting said membrane across said hollow so as to form a space therebetween, ports extending through said body so as to provide access to said hollow from a point outside said body, and resilient tongues extending from said body on the side opposite said membrane from said hollow, said tongues lying within a cylinder having an axis perpendicular to said membrane and having ramps sloping toward said membrane from their ends and means defining detent notches next to said ramps.
Claim 3
Dependent Claim
33 words
A pressure dome as set forth in claim 1 having bridges extending from the ends of said tongues to said body, the surfaces of said bridges nearer said axis lying outside said cylinder.
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) | 1983-01-28 | 1983-07-30 | 1984-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-01-28 | 1987-07-30 | 1988-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-01-28 | 1991-07-30 | 1992-01-29 | $7700.00 | Window Closed / Lapsed |