US3259451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film gate
Assignee: Northrop Grumman Guidance and Electronics Co Inc
•
Filing: 1963-09-06
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Granted: 1966-07-05
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Expires: 1983-09-06
Abstract
No abstract record available.
Inventors
- 👤 Henry N Fairbanks
- 👤 Daniel H Robbins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:08
CPC Classifications
G; G03; G03B; G03B1/00; G03B1/56
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
A FILM GATE FOR HOLDING A LENGTHWISE-EXTENDING PORTION OF A FILM IN A PROJECTION PLANE WHEN THE FILM IS AT REST, AND FOR PROVIDING A PATH THROUGH WHICH THE FILM CAN BE FREELY TRANSPORTED, COMPRISING A SUPPORT MEMBER AGAINST WHICH THE FILM CAN BE ENGAGED, A BEARING MEMBER FOR ENGAGING THE FILM TO URGE IT AGAINST THE SUPPORT MEMBER, TO HOLD THE FILM IN THE PROJECTION PLANE, SAID MEMBERS BEING MOUNTED FOR MOVEMENT RELATIVE TO EACH OTHER, A CAM THAT IS FIXED RELATIVE TO ONE OF SAID MEMBERS AND THAT IS RIGIDLY INTERCONNECTED THEREWITH, A CAM SURFACE THAT IS FIXED RELATIVE TO THE OTHER OF SAID MEMBERS AND THAT IS RIGIDLY INTERCONNECTED THEREWITH, AND MEANS FOR CAUSING RELATIVE MOVEMENT BETWEEN SAID CAM AND CAM SURFACE, FOR CAUSING RELATIVE MOVEMENT BETWEEN SAID MEMBERS, TO PROVIDE A PATH FOR THE TRANSPORT OF FILM THEREBETWEEN.
Claim 2
Dependent Claim
142 words
A FILM GATE FOR HOLDING A LENGTHWISE-EXTENDING PORTION OF A FILM IN A PROJECTION PLANE WHEN THE FILM IS AT REST, AND FOR PROVIDING A PATH THROUGH WHICH THE FILM CAN BE FREELY TRANSPORTED, COMPRISING A SUPPORT MEMBER AGAINST WHICH THE FILM CAN BE ENGAGED, A BEARING MEMBER FOR ENGAGING THE FILM TO URGE IT AGAINST THE SUPPORT MEMBER, TO HOLD THE FILM IN THE PROJECTION PLANE, SAID MEMBERS BEING MOUNTED FOR MOVEMENT RELATIVE TO EACH OTHER, A CAM THAT IS FIXED RELATIVE TO ONE OF SAID MEMBERS AND THAT IS RIGIDLY INTERCONNECTED THEREWITH, A CAM SURFACE THAT IS FIXED RELATIVE TO THE OTHER OF SAID MEMBERS AND THAT IS RIGIDLY INTERCONNECTED THEREWITH, AND MEANS FOR CAUSING RELATIVE MOVEMENT BETWEEN SAID CAM AND CAM SURFACE, FOR CAUSING RELATIVE MOVEMENT BETWEEN SAID MEMBERS, TO PROVIDE A PATH FOR THE TRANSPORT OF FILM THEREBETWEEN.
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) | 1969-07-04 | 1970-01-03 | 1970-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-04 | 1974-01-03 | 1974-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-04 | 1978-01-03 | 1978-07-05 | $7700.00 | Window Closed / Lapsed |