US3315084A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Housing for light meter using photoresistance
Assignee: Individual
•
Filing: 1964-06-10
•
Granted: 1967-04-18
•
Expires: 1984-06-10
Abstract
No abstract record available.
Inventors
- 👤 Bertram Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:21
CPC Classifications
G; G01; G01J; G01J1/00; G01J1/02; G01J1/04; G01J1/0407; G01J1/0474; G01J1/42; G01J1/4209; G01J1/4214; G01J1/0271
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
IN A LIGHT METER HAVING A BODY WITH A PHOTO-RESISTANCE ELEMENT THEREIN ACTING AS A LIGHT SENSITIVE ELEMENT FOR CONTROLLING THE ACTUATION OF THE METER AND HAVING MEANS FORMING A LIGHT RECEPTIVE OPENING FOR CONDUCTING LIGHT TO THE LIGHT SENSITIVE ELEMENT, AN OPAQUE ONE PIECE COVER ADAPTED TO PREVENT ACCESS OF LIGHT TO SAID OPENING AND A DIFFUSOR LID HAVING AN EXTERNALLY BULGED TRANSLUCENT PORTION ADAPTED TO RECEIVE LIGHT FROM A WIDER ANGLE THAN THE RECEIVING ANGLE OF SAID OPENING, SAID METER BEING CHARACTERIZED BY A FIRST PIVOTED CONNECTION MEANS BETWEEN THE COVER AND SAID BODY ALONG ONE EDGE OF SAID COVER PERMITTING THE SWINGING OF SAID COVER BETWEEN A CLOSED POSITION OVER SAID OPENING AND AN OPEN POSITION PROJECT-
Claim 2
Dependent Claim
120 words
IN A LIGHT METER HAVING A BODY WITH A PHOTO-RESISTANCE ELEMENT THEREIN ACTING AS A LIGHT SENSITIVE ELEMENT FOR CONTROLLING THE ACTUATION OF THE METER AND HAVING MEANS FORMING A LIGHT RECEPTIVE OPENING FOR CONDUCTING LIGHT TO THE LIGHT SENSITIVE ELEMENT, AN OPAQUE ONE PIECE COVER ADAPTED TO PREVENT ACCESS OF LIGHT TO SAID OPENING AND A DIFFUSOR LID HAVING AN EXTERNALLY BULGED TRANSLUCENT PORTION ADAPTED TO RECEIVE LIGHT FROM A WIDER ANGLE THAN THE RECEIVING ANGLE OF SAID OPENING, SAID METER BEING CHARACTERIZED BY A FIRST PIVOTED CONNECTION MEANS BETWEEN THE COVER AND SAID BODY ALONG ONE EDGE OF SAID COVER PERMITTING THE SWINGING OF SAID COVER BETWEEN A CLOSED POSITION OVER SAID OPENING AND AN OPEN POSITION PROJECT-
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) | 1970-04-17 | 1970-10-17 | 1971-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-17 | 1974-10-17 | 1975-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-17 | 1978-10-17 | 1979-04-18 | $7700.00 | Window Closed / Lapsed |