Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
392 words
In a swinging-sector camera shutter having an image aperture and first and second swinging sectors, each swinging sector including a primary blade and a plurality of covering blades and being adapted for movement to and fro across said image aperture, 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, means for actuating and tensioning said first and second swinging sector, 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 having first and second control surfaces, first latching means latching said lever and second latching means connected to a solenoid magnet, said solenoid magnet 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 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 which in turn is connected to said means cooperating with the primary blade of said second swinging sector, the improvement comprising: a. a warning lever having a slotted hole (6d) for mounting on a fixed pin (7) to make said warning lever longitudinally displaceable and tiltable about said fixed pin, said warning lever having a first end (6c) and a second end (6e), said first end spring biased against an abutment (7a) outside the range of motion of said first operating crank; b. said warning lever having a first pin (6a) for contacting said second latching means (4) when said solenoid magnet is deenergized to tilt said first end into the range of motion of said first operating crank, said first pin subsequently disengaging said second latching means and said second latching means releasing said means for actuating said second swinging sector; and c. said warning lever having a second pin (6b) in the range of motion of said control lever and being longitudinally shifted by said control lever to remove said first pin from the range of motion of said second latching means when said warning lever is not tilted.
Claim 2
Dependent Claim
392 words
In a swinging-sector camera shutter having an image aperture and first and second swinging sectors, each swinging sector including a primary blade and a plurality of covering blades and being adapted for movement to and fro across said image aperture, 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, means for actuating and tensioning said first and second swinging sector, 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 having first and second control surfaces, first latching means latching said lever and second latching means connected to a solenoid magnet, said solenoid magnet 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 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 which in turn is connected to said means cooperating with the primary blade of said second swinging sector, the improvement comprising: a. a warning lever having a slotted hole (6d) for mounting on a fixed pin (7) to make said warning lever longitudinally displaceable and tiltable about said fixed pin, said warning lever having a first end (6c) and a second end (6e), said first end spring biased against an abutment (7a) outside the range of motion of said first operating crank; b. said warning lever having a first pin (6a) for contacting said second latching means (4) when said solenoid magnet is deenergized to tilt said first end into the range of motion of said first operating crank, said first pin subsequently disengaging said second latching means and said second latching means releasing said means for actuating said second swinging sector; and c. said warning lever having a second pin (6b) in the range of motion of said control lever and being longitudinally shifted by said control lever to remove said first pin from the range of motion of said second latching means when said warning lever is not tilted.
Claim 3
Dependent Claim
61 words
The swinging-sector camera shutter of claim 1, wherein said first operating crank (12) has a crank part (12a) with said first end, said second latching means has an angled part (4b) cooperating with said first pin, the configuration of said crank part, said first end and said angled part defining a time delay corresponding to the flash time of the shutter.
Claim 4
Dependent Claim
114 words
The swinging-sector camera shutter of claim 1, further comprising a viewing aperture, a first and a second sighting lever (13, 15) which can be tilted, independently of each other, against spring force about a common axis so that one end thereof (13b, 15b) appears in said viewing aperture (14), and the other ends (13a, 15a) thereof are disposed side-by-side so that said second End of said warning lever, in the tilted and longitudinally displaced condition, cooperates with said first sighting lever (13) signaling the mechanical time formation and, in the untilted, longitudinally displaced condition, cooperates with the second sighting lever (15) signaling an electronic time formation, and tilts these respectively into the viewing window.
Claim 5
Dependent Claim
62 words
The swinging-sector camera shutter of claim 3, wherein said means for providing a time delay is an electronic circuit having a plurality of positions corresponding to specific exposure times wherein RC-members with different fixed resistors are employed, a position ''''X'''' wherein the switched-on fixed resistor (Rx) is low-ohmic so that the solenoid magnet is deenergized so that the time is formed mechanically.