US3210859A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Skin diver's compass
Assignee: Individual
•
Filing: 1963-12-23
•
Granted: 1965-10-12
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Expires: 1983-12-23
Abstract
No abstract record available.
Inventors
- 👤 Fisk Wooster Hayden
- 👤 Harold A Keller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:38
CPC Classifications
G; G01; G01C; G01C17/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
185 words
A COMPASS FOR UNDERWATER USE COMPRISING: A BRACKET ADAPTED TO BE ATTACHED TO THE PERIPHERAL RING OF A FACE MASK; A COMPASS HOUSING ATTACHED TO SAID BRACKET, SAID COMPASS HOUSING BEING LOCATED ABOVE THE MASK IN VERTICAL ALIGNMENT WITH ONE EYE OF A PERSON WEARING THE MASK, SAID COMPASS HOUSING HAVING FORMED THEREIN A CYLINDRICAL HOLLOW CHAMBER HAVING AN UPRIGHT CENTRAL AXIS, THE UPPER PORTION OF SAID HOUSING BEING MADE OF LIGHT-TRANSMITTING SOLID MATERIAL; AN OPAQUE DISK MOUNTED WITHIN SAID HOUSING FOR ROTATION ABOUT SAID CENTRAL AXIS, SAID DISK HAVING FORMED THEREON A PLURALITY OF LIGHT-TRANSMITTING INDICATIONS SPACED ANGULARLY ABOUT SAID CENTRAL AXIS; A BAR MAGNET FIXED TO SAID DISK IN A RADIALLY EXTENDED LOCATION; A DEPENDENING HOLLOW CASING OPEN IN SEALED RELATIONSHIP TO SAID COMPASS HOUSING AT THE FRONT THEREOF, HAVING A LONGITUDINAL AXIS PARALLEL TO SAID CENTRAL AXIS; AND PRISM MEANS AT THE LOWER END OF SAID CASING LOCATED AT THE EYE LEVEL OF A PERSON WEARING THE MASK AND DIRECTED AXIALLY UPWARD THROUGH T HE CASING PARALLEL TO SAID CENTRAL AXIS AND ALSO REARWARDLY AT AN ANGLE PERPENDICULAR TO SAID CENTRAL AXIS.
Claim 2
Dependent Claim
185 words
A COMPASS FOR UNDERWATER USE COMPRISING: A BRACKET ADAPTED TO BE ATTACHED TO THE PERIPHERAL RING OF A FACE MASK; A COMPASS HOUSING ATTACHED TO SAID BRACKET, SAID COMPASS HOUSING BEING LOCATED ABOVE THE MASK IN VERTICAL ALIGNMENT WITH ONE EYE OF A PERSON WEARING THE MASK, SAID COMPASS HOUSING HAVING FORMED THEREIN A CYLINDRICAL HOLLOW CHAMBER HAVING AN UPRIGHT CENTRAL AXIS, THE UPPER PORTION OF SAID HOUSING BEING MADE OF LIGHT-TRANSMITTING SOLID MATERIAL; AN OPAQUE DISK MOUNTED WITHIN SAID HOUSING FOR ROTATION ABOUT SAID CENTRAL AXIS, SAID DISK HAVING FORMED THEREON A PLURALITY OF LIGHT-TRANSMITTING INDICATIONS SPACED ANGULARLY ABOUT SAID CENTRAL AXIS; A BAR MAGNET FIXED TO SAID DISK IN A RADIALLY EXTENDED LOCATION; A DEPENDENING HOLLOW CASING OPEN IN SEALED RELATIONSHIP TO SAID COMPASS HOUSING AT THE FRONT THEREOF, HAVING A LONGITUDINAL AXIS PARALLEL TO SAID CENTRAL AXIS; AND PRISM MEANS AT THE LOWER END OF SAID CASING LOCATED AT THE EYE LEVEL OF A PERSON WEARING THE MASK AND DIRECTED AXIALLY UPWARD THROUGH T HE CASING PARALLEL TO SAID CENTRAL AXIS AND ALSO REARWARDLY AT AN ANGLE PERPENDICULAR TO SAID CENTRAL AXIS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |