US3425329A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic self-cocking shutter with electronic shutter speed control
Assignee: Hittech Prontor GmbH
•
Filing: 1966-07-11
•
Granted: 1969-02-04
•
Expires: 1986-07-11
Abstract
No abstract record available.
Inventors
- 👤 Franz W R Starp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:19
CPC Classifications
G; G03; G03B; G03B9/00; G03B9/58; G03B9/62; G03B9/64
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
A PHOTOGRAPHIC SHUTTER COMPRISING A BLADE (2) MOVABLE FROM A CLOSED POSITION TO AN OPEN POSITION TO A CLOSED POSITION; LOCKING MEANS (28) TO LOCK SAID BLADE IN ITS OPEN POSITION; AN ELECTROMAGNET (25) CONNECTED TO SAID MEANS TO ACTUATE THE SAME, A TIMING CIRCUIT CONNECTED TO SAID ELECTROMAGNET TO CONTROL THE OPERATION THEREOF; A FIRST SWITCH (30, 31) CONNECTED TO SAID TIMING CIRCUIT TO CONTROL THE OPERATION THEREOF, SAID SWITCH COMPRISING A MOVABLE MEMBER (30); A SHUTTER TRIGGER (18), POSITIONING MEANS (33) MOVING WITH SAID SHUTTER BLADE TO ENGAGE SAID MOVABLE MEMBER AND TO PERMIT SAID SWITCH TO CLOSE IN ORDER TO ENERGIZE SAID TIMING CIRCUIT AND SAID ELECTROMAGNET ONLY WHEN SAID SHUTTER TRIGGER IS ACTUATED; MEANS (16, 12, 8, 9, 11, 3) CONNECTING SAID SHUTTER TRIGGER; AND MEANS (35) TO ENGAGE SAID POSITIONING MEANS WHEN SAID LOCKING
Claim 2
Dependent Claim
139 words
A PHOTOGRAPHIC SHUTTER COMPRISING A BLADE (2) MOVABLE FROM A CLOSED POSITION TO AN OPEN POSITION TO A CLOSED POSITION; LOCKING MEANS (28) TO LOCK SAID BLADE IN ITS OPEN POSITION; AN ELECTROMAGNET (25) CONNECTED TO SAID MEANS TO ACTUATE THE SAME, A TIMING CIRCUIT CONNECTED TO SAID ELECTROMAGNET TO CONTROL THE OPERATION THEREOF; A FIRST SWITCH (30, 31) CONNECTED TO SAID TIMING CIRCUIT TO CONTROL THE OPERATION THEREOF, SAID SWITCH COMPRISING A MOVABLE MEMBER (30); A SHUTTER TRIGGER (18), POSITIONING MEANS (33) MOVING WITH SAID SHUTTER BLADE TO ENGAGE SAID MOVABLE MEMBER AND TO PERMIT SAID SWITCH TO CLOSE IN ORDER TO ENERGIZE SAID TIMING CIRCUIT AND SAID ELECTROMAGNET ONLY WHEN SAID SHUTTER TRIGGER IS ACTUATED; MEANS (16, 12, 8, 9, 11, 3) CONNECTING SAID SHUTTER TRIGGER; AND MEANS (35) TO ENGAGE SAID POSITIONING MEANS WHEN SAID LOCKING
References Cited (Backward Citations)
US3356004A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-04 | 1972-08-05 | 1973-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-04 | 1976-08-05 | 1977-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-04 | 1980-08-05 | 1981-02-04 | $7700.00 | Window Closed / Lapsed |