US3228315A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Camera shutter
Assignee: Individual
•
Filing: 1963-03-22
•
Granted: 1966-01-11
•
Expires: 1983-03-22
Abstract
No abstract record available.
Inventors
- 👤 Stephen A Platt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:02
CPC Classifications
G; G03; G03B; G03B9/00; G03B9/08; G03B9/36; G03B9/40; G03B9/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
IN A CAMERA SHUTTER HAVING A RESILIENTLY BIASED LEADER BLADE RELEASED BY AN OPERATING MECHANISM AND A RESILIENTLY BIASED FOLLOWER BLADE RELEASABLE BY THE LEADER BLADE AT A PREDETERMINABLE POINT IN ITS MOTION, THE IMPROVEMENT COMPRISINGG: LATCH MEANS FOR HOLDING SAID FOLLOWER BLADE IN COCKED POSITION; TRIGGER MEANS; MEANS BIASING SAID TRIGGER MEANS INTO ENGAGEMENT WITH SAID LATCH MEANS; ACTUATING MEANS CARRIED BY SAID LEADER BLADE AND MOVABLE THEREIN; SAID TRIGGER MEANS BEING IN THE PATH OF MOVEMENT OF SAID ACTUATING MEANS WITH MOVEMENT OF SAID LEADER BLADE TO ALLOW ENGAGEMENT THEREBETWEEN; AND SAID ACTUATING MEANS COOPERATING WITH SAID TRIGGER MEAND WITH ENGAGEMENT THEREWITH TO RELEASE SAID LATCH MEANS WHEN SAID LEADER BLADE IS AT SAID PREDETERMINED POINT; AND SAID TRIGGER MEANS BEING MOUNTED ON A SHIFTABLE BIASING ELEMENT THAT IS ADJUSTABLY MOVABLE WITH RESPECT TO SAID LATCH MEANS TO VARY THE BIAS RESISTANCE TO BE OVERCOME WITH RELEASE OF SAID LATCH MEANS.
Claim 2
Dependent Claim
153 words
IN A CAMERA SHUTTER HAVING A RESILIENTLY BIASED LEADER BLADE RELEASED BY AN OPERATING MECHANISM AND A RESILIENTLY BIASED FOLLOWER BLADE RELEASABLE BY THE LEADER BLADE AT A PREDETERMINABLE POINT IN ITS MOTION, THE IMPROVEMENT COMPRISINGG: LATCH MEANS FOR HOLDING SAID FOLLOWER BLADE IN COCKED POSITION; TRIGGER MEANS; MEANS BIASING SAID TRIGGER MEANS INTO ENGAGEMENT WITH SAID LATCH MEANS; ACTUATING MEANS CARRIED BY SAID LEADER BLADE AND MOVABLE THEREIN; SAID TRIGGER MEANS BEING IN THE PATH OF MOVEMENT OF SAID ACTUATING MEANS WITH MOVEMENT OF SAID LEADER BLADE TO ALLOW ENGAGEMENT THEREBETWEEN; AND SAID ACTUATING MEANS COOPERATING WITH SAID TRIGGER MEAND WITH ENGAGEMENT THEREWITH TO RELEASE SAID LATCH MEANS WHEN SAID LEADER BLADE IS AT SAID PREDETERMINED POINT; AND SAID TRIGGER MEANS BEING MOUNTED ON A SHIFTABLE BIASING ELEMENT THAT IS ADJUSTABLY MOVABLE WITH RESPECT TO SAID LATCH MEANS TO VARY THE BIAS RESISTANCE TO BE OVERCOME WITH RELEASE OF SAID LATCH MEANS.
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) | 1969-01-10 | 1969-07-12 | 1970-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-10 | 1973-07-12 | 1974-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-10 | 1977-07-12 | 1978-01-11 | $7700.00 | Window Closed / Lapsed |