Patent US4336591A successfully refreshed from Google Patents.
US4336591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Maximum depth monitoring apparatus
Assignee: United States Department of the Navy
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Filing: 1980-07-07
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Granted: 1982-06-22
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Expires: 2000-07-07
Abstract
Abstract A depth monitoring device monitors the period of a diver's maximum depth. Aaximum depth display is coupled to the depth monitor to enable the diver to quickly determine, at any given time during the period, his maximum depth of submergence. When the diver reaches a preselected critical maximum depth, an audio alarm coupled to the depth monitor is activated to alert the diver.
Inventors
- 👤 Peter F. Berdzar
- 👤 Robert S. Acks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:28
CPC Classifications
B; B63; B63C; B63C11/00; B63C11/02; B63C11/32; B63C2011/021
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
135 words
An apparatus for diver safety comprising: a package sized to be mountable upon a diver's wrist; solid state electronic depth monitoring means for monitoring the maximum depth of a diver during the period that the diver is submerged being disposed in the wrist mountable package; indicating means disposed in the wrist mountable package coupled to said depth monitoring means for enabling said diver to readily determine at any given time during said period his maximum depth of submergence; and an audio alarm means coupled to said depth monitoring means for alerting said diver when said diver descends below a preselected critical maximum depth, said audio alarm comprising a bone conduction earphone means electrically connected to said package by a small conductor disposed inside a diver's wetsuit and extending between said earphone means and said package.
Claim 2
Independent Claim
135 words
An apparatus for diver safety comprising: a package sized to be mountable upon a diver's wrist; solid state electronic depth monitoring means for monitoring the maximum depth of a diver during the period that the diver is submerged being disposed in the wrist mountable package; indicating means disposed in the wrist mountable package coupled to said depth monitoring means for enabling said diver to readily determine at any given time during said period his maximum depth of submergence; and an audio alarm means coupled to said depth monitoring means for alerting said diver when said diver descends below a preselected critical maximum depth, said audio alarm comprising a bone conduction earphone means electrically connected to said package by a small conductor disposed inside a diver's wetsuit and extending between said earphone means and said package.
Claim 3
Dependent Claim
68 words
The apparatus of claim 1 further including: means disposed in the wrist mountable package for monitoring the passage of time while said diver is submerged; means disposed in the wrist mountable package coupled to said time monitoring means for displaying said submergence time of said diver; and means disposed in the wrist mountable package coupled to said depth monitoring means for displaying said maximum depth of said diver.
Claim 4
Dependent Claim
33 words
The apparatus of claim 2: further including means disposed in the wrist mountable package for automatically clearing said maximum depth display means when said diver surfaces at the conclusion of said submergence period.
Claim 5
Dependent Claim
63 words
The apparatus of claim 1 wherein said depth monitoring means is a pressure responsive device for generating a signal which indicates the depth of said diver at a given time during said period of submergence and wherein said apparatus further comprises integrated circuit means receiving said depth indicating signal for activating said audio alarm when said diver descends below said preselected critical depth.
Claim 6
Dependent Claim
60 words
The apparatus of claim 4 wherein: said integrated circuit means is prestructured to respond to a particular one of said depth indicating signals by activating said audio alarm, said integrated circuit means being one of a set of integrated circuits which each correspond to a different depth of submergence and each in said set being removably insertable into said package.
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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) | 1985-06-21 | 1985-12-21 | 1986-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-21 | 1989-12-21 | 1990-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-21 | 1993-12-21 | 1994-06-22 | $7700.00 | Window Closed / Lapsed |