US3242801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic fm function generator
Assignee: Individual
•
Filing: 1963-09-12
•
Granted: 1966-03-29
•
Expires: 1983-09-12
Abstract
No abstract record available.
Inventors
- 👤 John A Shay
- 👤 Kurt E Utley
- 👤 Bertram J Goldstone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:12
CPC Classifications
H; H03; H03C; H03C3/00; H03C3/36; G; G01; G01M; G01M11/00; G01M11/02; G01M11/0292
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
209 words
AN APPARATUS FOR PHOTOGRAPHICALLY PRODUCING A PREDETERMINED FM FUNCTION GENERATOR GRATING STRIP COMPRISING, A CONCENTRATED LIGHT SOURCE, MEANS IN FORNT OF SAID LIGHT OSURCE FOR FORMING A COLLIMATED LIGHT BEAM HAVING ITS CENTRAL AXIS EXTENDING IN A HORIZONTAL DIRECTION, AN APAQUE SHIELD FIXED IN THE PATH OF SAID LIGHT BEAM HAVING A NARROW LIGHT SLIT OPENING THEREIN OF PREDETERMINED WIDTH EXTENDING THROUGH SAID AXIS TO THE OPPOSITE SIDES THEREOF TO FORM A COLLIMATED NARROW FLAT LIGHT BEAM, A TRANSPARENT UNIFORM SINE-WAVE GRATING STRIP FREELY MOVABLE THROUGH THE AXIS OF SAID LIGHT BEAM PERPENDICULAR THERETO AND PERPENDICULAR TO SAID LIGHT SLIT UNDER THE INFLUENCE OF GRAVITY AND IN ONE DIRECTION ONLY, WHEN RELEASED TO PRODUCE UNIFORM ACCELERATION OF SAID GRATING THROUGH SAID LIGHT BEAM MEANS FOR RELEASABLY SUPPORTING SAID STRIP AGAINST SAID MOVEMENT, MEANS SPACED FORWARDLY OF SAID GRATING FOR SUPPORTING AND MOVING A SENSITIZED FILM STRIP ACROSS THE AXIS OF SAID LIGHT BEAM IN SPACED PARALLEL RELATION TO SAID GRATING SIMULTANEOUSLY WITH THE MOVEMENT OF SAID GRATING IN THE SAME DIRECTION OF GRATING MOVEMENT AT A PREDETERMINED UNIFORM RATE TO TRAVEL FOR EXPOSING SAID FILM STRIP THROUGH SAID GRATING DURING RELEASE AND GRAVITATIONAL ACCELERATION THEREOF, WHEREBY A FM FUNCTION GENERATOR STRIP IS PRODUCED WHEN SAID FILM STRIP IS PROCESSED.
Claim 2
Independent Claim
209 words
AN APPARATUS FOR PHOTOGRAPHICALLY PRODUCING A PREDETERMINED FM FUNCTION GENERATOR GRATING STRIP COMPRISING, A CONCENTRATED LIGHT SOURCE, MEANS IN FORNT OF SAID LIGHT OSURCE FOR FORMING A COLLIMATED LIGHT BEAM HAVING ITS CENTRAL AXIS EXTENDING IN A HORIZONTAL DIRECTION, AN APAQUE SHIELD FIXED IN THE PATH OF SAID LIGHT BEAM HAVING A NARROW LIGHT SLIT OPENING THEREIN OF PREDETERMINED WIDTH EXTENDING THROUGH SAID AXIS TO THE OPPOSITE SIDES THEREOF TO FORM A COLLIMATED NARROW FLAT LIGHT BEAM, A TRANSPARENT UNIFORM SINE-WAVE GRATING STRIP FREELY MOVABLE THROUGH THE AXIS OF SAID LIGHT BEAM PERPENDICULAR THERETO AND PERPENDICULAR TO SAID LIGHT SLIT UNDER THE INFLUENCE OF GRAVITY AND IN ONE DIRECTION ONLY, WHEN RELEASED TO PRODUCE UNIFORM ACCELERATION OF SAID GRATING THROUGH SAID LIGHT BEAM MEANS FOR RELEASABLY SUPPORTING SAID STRIP AGAINST SAID MOVEMENT, MEANS SPACED FORWARDLY OF SAID GRATING FOR SUPPORTING AND MOVING A SENSITIZED FILM STRIP ACROSS THE AXIS OF SAID LIGHT BEAM IN SPACED PARALLEL RELATION TO SAID GRATING SIMULTANEOUSLY WITH THE MOVEMENT OF SAID GRATING IN THE SAME DIRECTION OF GRATING MOVEMENT AT A PREDETERMINED UNIFORM RATE TO TRAVEL FOR EXPOSING SAID FILM STRIP THROUGH SAID GRATING DURING RELEASE AND GRAVITATIONAL ACCELERATION THEREOF, WHEREBY A FM FUNCTION GENERATOR STRIP IS PRODUCED WHEN SAID FILM STRIP IS PROCESSED.
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) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |