US3766840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Actuating and control mechanism for rotary sector shutter
Assignee: Ernst Leitz Wetzlar GmbH
•
Filing: 1972-06-28
•
Granted: 1973-10-23
•
Expires: 1992-06-28
Abstract
Abstract A camera shutter includes leading and lagging multi-sector blades. Each blade has a primary sector which executes a compound pivoting and sliding movement followed by a plurality of secondary sectors each of which pivots about a common axis. Cocking and triggering of each blade is accomplished by a pivoted crank. Each crank has a cam follower driven by a two armed pivoted lever which drives each blade to the cocked position. The lagging blade is released by an electromagnet actuated by an electronic timing circuit.
Inventors
- 👤 P Loseries
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:01
CPC Classifications
G; G03; G03B; G03B9/00; G03B9/58; G03B9/62; G03B9/08; G03B9/10; G03B9/18
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
168 words
In a swinging sector camera shutter having an image aperture plate and first and second swinging sectors, each said swinging sector including a primary blade and a plurality of covering blades and being adapted for movement to and fro across said aperture plate, and means cooperating with the primary blade of each said swinging sector to provide a combined rotary sliding motion thereof in which the sliding component of motion extends substantially in the direction of the leading edge of the primary blade, the improvement comprising means for actuating and tensioning said first and second swinging sectors comprising a control lever (11) having first (11a) and second (11b) control surfaces, said first control surface connected to a first operating crank (3) which in turn is connected to said means cooperating with the primary blade of said first swinging sector, said second control surface connected to a second operating crank (6) which in turn is connected to said means cooperating with the primary blade of said second swinging sector.
Claim 2
Dependent Claim
168 words
In a swinging sector camera shutter having an image aperture plate and first and second swinging sectors, each said swinging sector including a primary blade and a plurality of covering blades and being adapted for movement to and fro across said aperture plate, and means cooperating with the primary blade of each said swinging sector to provide a combined rotary sliding motion thereof in which the sliding component of motion extends substantially in the direction of the leading edge of the primary blade, the improvement comprising means for actuating and tensioning said first and second swinging sectors comprising a control lever (11) having first (11a) and second (11b) control surfaces, said first control surface connected to a first operating crank (3) which in turn is connected to said means cooperating with the primary blade of said first swinging sector, said second control surface connected to a second operating crank (6) which in turn is connected to said means cooperating with the primary blade of said second swinging sector.
Claim 3
Dependent Claim
97 words
The swinging sector camera shutter of claim 1, wherein said control lever (11) is a swingable lever having a first arm and a second arm, said first operating crank (3) having a first crank axis and a first pin (3b) eccentric to said first axis, said second operating crank (6) having a second axis and second (6b) and third (6c) pins eccentric to said second axis, said first arm cooperating with said first pin to tension said first swinging sector and said second arm cooperating with said second and third pins to tension said second swinging sector.
Claim 4
Dependent Claim
71 words
The swinging sector camera shutter of claim 1, wherein said second sector is held in tension by a latch (10), said latch is biased by a throwout spring (16), said spring is connected to said second control surface (11b), a solenoid magnet (15) holds said latch against the force of said spring, said magnet is electrically connected to a switch and said switch is actuated by said first control surface (11a).
Claim 5
Dependent Claim
234 words
In a swinging sector camera shutter having an image aperture plate and first and second swinging sectors, each said swinging sector including a primary blade and a plurality of covering blades and being adapted for movement to and fro across said aperture plate, and means cooperating with the primary blade of each said swinging sector to provide a combined rotary sliding motion thereof in which the sliding component of motion extends substantially in the direction of the leading edge of the primary blade, the improvement comprising means for actuating and tensioning said first and second swinging sectors, and means for providing a time delay between the actuation of said first and second swinging sectors, said means for actuating and tensioning comprising a control lever (11) having first (11a) and second (11b) control surfaces, first latching means (9) latching said lever and second latching means (10) connected to a solenoid magnet (15), said solenoid connected to said means for a time delay, said means for a time delay having a switch actuated by said first control surface, said first control surface connected to a first operating crank (3) which in turn is connected to said means cooperating with the primary blade of said first swinging sector, said second control surface connected to a second operating crank (6) which in turn is connected to said means cooperating with the primary blade of said second swinging sector.
Claim 6
Dependent Claim
234 words
In a swinging sector camera shutter having an image aperture plate and first and second swinging sectors, each said swinging sector including a primary blade and a plurality of covering blades and being adapted for movement to and fro across said aperture plate, and means cooperating with the primary blade of each said swinging sector to provide a combined rotary sliding motion thereof in which the sliding component of motion extends substantially in the direction of the leading edge of the primary blade, the improvement comprising means for actuating and tensioning said first and second swinging sectors, and means for providing a time delay between the actuation of said first and second swinging sectors, said means for actuating and tensioning comprising a control lever (11) having first (11a) and second (11b) control surfaces, first latching means (9) latching said lever and second latching means (10) connected to a solenoid magnet (15), said solenoid connected to said means for a time delay, said means for a time delay having a switch actuated by said first control surface, said first control surface connected to a first operating crank (3) which in turn is connected to said means cooperating with the primary blade of said first swinging sector, said second control surface connected to a second operating crank (6) which in turn is connected to said means cooperating with the primary blade of said second swinging sector.
Claim 7
Dependent Claim
43 words
The swinging sector camera shutter of claim 4, wherein said second sector is held in tension by said second latching means (10), said second latching means is biased by a throwout spring (16) and said spring is connected to said second control surface.
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) | 1976-10-22 | 1977-04-23 | 1977-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-22 | 1981-04-23 | 1981-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-22 | 1985-04-23 | 1985-10-23 | $7700.00 | Window Closed / Lapsed |