Patent US3331959A successfully refreshed from Google Patents.
US3331959A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Explosion-proof light assembly
Assignee: Aerojet Rocketdyne Holdings Inc
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Filing: 1965-08-26
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Granted: 1967-07-18
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Expires: 1985-08-26
Abstract
No abstract record available.
Inventors
- 👤 Philip R Sayre
- 👤 Richard W Watkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:19
CPC Classifications
B; B01; B01J; B01J3/00; B01J3/004; G; G21; G21F; G21F7/00; G21F7/02; G21F7/03; F; F21; F21W; F21W2131/00; F21W2131/40; F21W2131/411; Y; Y10; Y10T; Y10T137/00; Y10T137/8158; Y10T137/8359; Y10T403/00; Y10T403/32; Y10T403/32606; Y10T403/32631; Y10T403/32737
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
78 words
AN EXPLOSION-PROOF LIGHT ASSEMBLY FOR ILLUMINATING THE INTERIOR OF VESSELS COMPRISING A VALUE BODY HAVING AN INLET AND AN OUTLET, A SOURCE OF LIGHT COMMUNICATING WITH SAID INLET, THE OUTLET COMMUNICATING WITH THE INTERIOR OF THE VESSEL, A BALL SEATED WITHIN SAID BODY AND HAVING AN ANNULAR PASSAGE THEREIN, A TRANSPARENT DISC DISPOSED WITHIN SAID PASSAGE AND NORMAL THERETO, AND MEANS TO ROTATE SAID BALL TO ALIGN SAID PASSAGE WITH THE SOURCE OF LIGHT AND WITH THE VESSEL.
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) | 1970-07-17 | 1971-01-16 | 1971-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-17 | 1975-01-16 | 1975-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-17 | 1979-01-16 | 1979-07-18 | $7700.00 | Window Closed / Lapsed |