发明名称 Toy film viewer and method of making same
摘要 A manually operated toy film viewer of simple design for viewing an 8 millimeter film loop contained within the housing of the viewer. In operating the toy film viewer, the loop of 8 millimeter film is controllably moved past a viewing aperture by a manual crank handle which is rotatably connected to one side of the hollow housing. The apparatus includes a feed sprocket, a spring biased shutter, a simple optical lens and a translucent screen disposed within a small window which is located opposite the viewing aperture and in close proximity with the film loop. Both the drive sprocket and the shutter of the film viewer are operated by the hand crank which car be easily manipulated by the child to controllably advance the film past the viewing aperture.
申请公布号 US5800034(A) 申请公布日期 1998.09.01
申请号 US19970876184 申请日期 1997.06.13
申请人 PRINCIPLE PLASTICS 发明人 HOYT, DAVID;ALDCROFT, GARY T.
分类号 G02B27/02;G03B21/11;(IPC1-7):G03B21/14 主分类号 G02B27/02
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