Patent US3868853A successfully refreshed from Google Patents.
US3868853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Casing for liquid-filled depth gauge
Assignee: Individual
•
Filing: 1972-07-07
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Granted: 1975-03-04
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Expires: 1992-07-07
Abstract
Abstract According to this invention an improved casing for a liquidfilled depth-gauge consists of a sealed capsule formed by two elements of transparent flexible plastics, bonded together, for example by fusion, along abutting outer edges. The two elements may comprise identical shells, or a single shell with a plastics cover.
Inventors
- 👤 Carlo Alinari
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:24
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/14
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
92 words
A sealed casing for a liquid filled depth gauge comprising a concave shell element of flexible, transparent, plastic material, a transverse flexible plastic cover element for said concave shell element, both of said elements having complementary peripheral edges sealingly engaged with each other, a transverse diaphgram having indicia thereon, means mounting said diaphragm within said peripheral edges of said element of said sealed casing in substantially parallel spaced relation to said transverse element, a pressure responsive instrument, and means for mounting said instrument having indicating means within said casing on said diaphragm.
Claim 2
Dependent Claim
92 words
A sealed casing for a liquid filled depth gauge comprising a concave shell element of flexible, transparent, plastic material, a transverse flexible plastic cover element for said concave shell element, both of said elements having complementary peripheral edges sealingly engaged with each other, a transverse diaphgram having indicia thereon, means mounting said diaphragm within said peripheral edges of said element of said sealed casing in substantially parallel spaced relation to said transverse element, a pressure responsive instrument, and means for mounting said instrument having indicating means within said casing on said diaphragm.
Claim 3
Dependent Claim
63 words
A sealed casing for a liquid filled depth gauge comprising a pair of spaced concave shell elements of flexible, transparent plastic material having complementary peripheral edge portions secured together in fluid tight relation, a transverse diaphragm having scale means interposed and secured between said edges and a pressure responsive instrument having indicating means mounted on said diaphragm for cooperation with said scale means.
Claim 4
Dependent Claim
63 words
A sealed casing for a liquid filled depth gauge comprising a pair of spaced concave shell elements of flexible, transparent plastic material having complementary peripheral edge portions secured together in fluid tight relation, a transverse diaphragm having scale means interposed and secured between said edges and a pressure responsive instrument having indicating means mounted on said diaphragm for cooperation with said scale means.
Claim 5
Dependent Claim
33 words
A sealed casing as set forth in claim 2 wherein said shell elements are each provided with complementary peripheral flanges which are secured together to provide a single protruding flange on said casing.
Claim 6
Dependent Claim
60 words
A sealed casing as set forth in claim 3 further comprising molded elasticly pliable support means having a concave configuration adapted to partially surround said sealed casing, said support means having a groove adapted to receive the flange on said sealed casing to secure said sealed casing in said support means and fastening strap means secured to said support means.
Claim 7
Dependent Claim
63 words
A sealed casing as set forth in claim 2 wherein the peripheral edge portion of one of said shell elements is fitted within the peripheral edge portion of the other shell element, one of said peripheral edge portions being provided with shoulder means so tHat said diaphragm is clamped between said shoulder means and the peripheral edge portion of the other shell element.
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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) | 1978-03-03 | 1978-09-02 | 1979-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-03 | 1982-09-02 | 1983-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-03 | 1986-09-02 | 1987-03-04 | $7700.00 | Window Closed / Lapsed |