摘要:
A mobile radiography apparatus has a portable transport frame and a sectioned vertical column mounted on the frame and defining a vertical axis, with a base section having a first vertical position relative to the vertical axis and a top section and at least one intermediate section between the top section and base section, wherein the top and the at least one intermediate sections are translatable along the vertical axis to vary the height of the sectioned vertical column. A boom apparatus supports an x-ray source, wherein the boom apparatus is coupled to the at least one intermediate section for positioning of the x-ray source along the vertical axis and extends outward with respect to the sectioned vertical column for positioning of the x-ray source in a direction that is orthogonal to the vertical axis.
摘要:
A mobile radiography apparatus has a portable transport frame. A sectioned vertical column mounted on the frame defines a vertical axis and has a base section having a fixed vertical position relative to the vertical axis and at least one movable section that is translatable to a variable vertical position. A boom apparatus supports an x-ray source and extends outward from the movable section and has an adjustable height relative to the vertical axis. A counterweight is operatively coupled to the boom apparatus to support displacement of the boom apparatus to any of a plurality of vertical positions along the movable section, wherein the counterweight, in cooperation with boom apparatus movement, travels along a shaft that extends within the movable section, wherein, at one or more of the height positions of the boom apparatus, a portion of the counterweight extends upward above the shaft of the sectioned vertical column.
摘要:
A multiple position lens barrel has a first lens carrier defining an optical axis. The first lens carrier has a set of first cam followers. A second lens carrier is aligned with the optical axis. The second lens carrier has a set of second cam followers. A cam cylinder has a tubular wall surrounding a passage aligned with the optical axis. The cam cylinder has a set of one or more first cam tracks and a set of one or more second cam tracks. The first and second cam tracks are axially spaced apart. Each cam track extends away from the wall in a radial direction. Each cam track extends along and about the optical axis. A biaser biases the cam followers toward respective can tracks.
摘要:
A camera includes an exposure counter wheel that has a series of exposure count indicia and is incrementally rotated in a count direction to successively view the exposure count indicia, and an anti-backup pawl that engages with the exposure counter wheel to prevent rotation of the exposure counter wheel in a reverse direction which is the opposite of the count direction. The anti-backup pawl is a combination single-piece unit having a stationary rigid transparent portion fixed in place above the exposure counter wheel to permit the exposure count indicia to be successively seen through the transparent portion when the exposure counter wheel is incrementally rotated in the count direction, and having a resilient flexible pawl portion positioned in engagement with the exposure counter wheel to prevent rotation of the exposure counter wheel in the reverse direction but to allow rotation of the exposure count wheel in the count direction.
摘要:
A one-time-use camera comprising a film cartridge with a light lock that is to be moved closed after a filmstrip exposed in the camera is completely wound into the film cartridge, and a closing device movable in engagement with the light lock to move the light lock closed, is characterized in that a retainer support for the closing device is adapted to hold the closing device in the camera and is resilient to permit the retainer support to be deformed temporarily to make room for the closing device to be assembled in the camera and to release the closing device to permit it to be removed from the camera.
摘要:
A camera includes an closure having a frame with a pair of opposed tracks. The frame defines a passage for the cartridge and placements for open and closed active light lock states. The closure has a door with a pair of opposed margins in slideable engagement with the tracks. The door is slideable along the tracks from a closed position, to a locking position, and then to an open position. The closure has a driver having an active light lock key. The driver is movable relative to the frame from a first position in which the key is in a placement for the open state and a second position wherein the key is in a placement for the closed state. The sliding of the door from the closed position to the locking position moves the driver from the first position to the second position. Sliding of the door from the locking position to the open position retains the driver in the second position.
摘要:
A subassembly for a one-time-use camera includes a main body part that has a film take-up chamber adapted to receive a film spool and a film supply chamber for an unexposed film roll, a film winding thumbwheel supported for winding rotation in engagement with the film spool to similarly rotate the film spool to take up an exposed filmstrip, and an anti-backup pawl engageable with the thumbwheel to prevent unwinding rotation of the thumbwheel and disengageable from the thumbwheel to allow unwinding rotation of the thumbwheel to permit the film spool to be similarly rotated to unwind a fresh exposed filmstrip from the film spool to form the unexposed film roll. The film take-up chamber is configured to allow the film spool to be received in the film take-up chamber in a film unwinding position for unwinding rotation of the film spool and a different film winding position for winding rotation of the film spool. The anti-backup pawl has an actuator which when actuated disengages the anti-backup pawl from the thumbwheel and which is located in the film take-up chamber to allow the film spool when received in the film take-up chamber in the film unwinding position to actuate the actuator to disengage the anti-backup pawl from the thumbwheel, but not when the film spool is received in the film take-up chamber in the film unwinding position.
摘要:
A film cassette includes a cassette body, a film spool onto which can be wound a strip of film drive disk coupled directly to the film spool, and an indicator flex disk that includes a film status indicator tab whose position relative to a window of the film cassette indicates the film exposure status. The position of the film status indicator tab is changed when the flex disk is moved into engagement with the drive disk and the film spool is rotated upon film movement. The film status indicator tab otherwise does not engage the drive disk and therefore does not change position. The cassette is particularly suited for operation with a photographic camera that includes a camera body, a loading chamber in the camera body that receives the film cassette, and a loading chamber cover having at least one movable indicator release pin that moves the flex disk into and out of engagement with the drive disk and thereby changes the position of the film status indicator tab. A camera controller determines the film status and controls the movement of the indicator release pin to selectively change the position of the film status indicator tab in accordance with the film status.
摘要:
A variable viewfinder mask assembly is adjustable to provide three different rectangular mask openings; the first and second of such openings being of the same height but of different widths and the first and third of said openings being of the same width but of different heights. Means are also provided to prevent overtravel of a drive member from influencing the adjustments of the mask openings.
摘要:
A differential gear mechanism for loading, advancing, rewinding and unloading photographic film, and in particular, film in a thrust film cartridge, for a photographic system. The differential gear includes a sun gear, which is rotatable, a planetary gear, which is rotatable by the sun gear, a drive spindle which is rotatable by the planetary gear to advance and rewind photographic film, a carrier plate, which is rotatable by the planetary gear, a drive gear, which is rotatable by the carrier plate for positioning the door of a film cartridge in either the open or closed position, and a torque control lever, for selectively locking or releasing one or both of the drive spindle and/or carrier plate so the planetary gear can selectively rotate one or both of the drive spindle or the carrier plate.