-
公开(公告)号：US3537253A
公开(公告)日：1970-11-03
申请号：US3537253D
申请日：1968-11-25
Applicant: POLAROID CORP
Inventor： FRIEDMAN MELVIN
CPC classification number: G04F3/022
-
公开(公告)号：US3894796A
公开(公告)日：1975-07-15
申请号：US37501473
申请日：1973-06-29
Applicant: POLAROID CORP
Inventor： COOK GERALD H , FRIEDMAN MELVIN
CPC classification number: G03B17/265 , G03B21/10
Abstract: A multi-purpose photographic film handling cassette and a motion picture camera and projector or viewer with which the cassette is adapted to be used for exposing, processing, and projecting a photographic film strip stored within the cassette. The cassette includes reel locking devices for arresting the rotation of supply and take-up reels mounted therein when the cassette is not operatively associated with either the camera or projector. Provisions are made for automatically unlocking the reels in response to locating the cassette in the cassette receiving chamber of the camera. In the viewer, the reels are unlocked by axial displacement of elements of the viewer after the cassette is located in the cassette receiving chamber of the viewer. The reel unlocking elements of the camera and viewer may be integrally formed with the reel drive shafts of those apparatus.
Abstract translation: 一种多功能摄影胶片处理盒，以及电影摄像机和投影仪或观察器，其中盒适用于曝光，处理和投影存储在盒内的照相胶片条。 盒子包括卷轴锁定装置，用于在盒子与相机或投影仪不可操作地相关联时阻止安装在其中的卷轴的旋转。 响应于将盒子放置在相机的盒式磁带接收室中而进行自动解锁卷轴。 在观察者中，在盒子位于观察者的盒子接收室中之后，卷轴被观察者的元件的轴向位移解锁。 相机和观察者的卷轴解锁元件可以与那些装置的卷轴驱动轴一体地形成。
-
3.发明授权Single apparatus with means to perform a back-reflection or transmission diffraction method of x-ray photography 失效具有执行X射线摄影的反射或透射衍射方法的单一装置
公开(公告)号：US3443091A
公开(公告)日：1969-05-06
申请号：US3443091D
申请日：1966-05-02
Applicant: POLAROID CORP
Inventor： BARTLETT PHILIP D , FRIEDMAN MELVIN
CPC classification number: G03B42/028
-
-
Search Results
3
records
(took 0.01 seconds)
