Photography – Aerial camera – Support or holder
Patent
1997-05-12
1998-06-09
Blankenship, Howard B.
Photography
Aerial camera
Support or holder
396427, G03B 2900
Patent
active
057650438
ABSTRACT:
An enclosure for housing and protecting a device adapted to be continuously aimed at an external target object. The enclosure includes inner and outer windowed portions which are movable relative to one another in response to movements of the device. The outer window is elongated and oriented around the tilt axis of the device to provide a line of sight to the target object at all times in response to tilting rotation of the device. The inner window is smaller and extends transversely of the outer window. Because the outer enclosure portion or dome overlies the inner enclosure portion or dome it blocks the line of sight to the target object except when the inner window is in registry with the outer window. When this occurs a relatively small opening affords a clear line of sight. The opening is small enough to limit wind loads to an acceptable level, so the opening is preferably left uncovered. If desired, however, this opening can be covered with a small section of glass or other protective material to completely isolate the enclosure interior from undesired environmental effects such as external wind loads and the like.
REFERENCES:
patent: 3638502 (1972-02-01), Leavitt et al.
patent: 4796039 (1989-01-01), Pagano
patent: 4821043 (1989-04-01), Leavitt
patent: 4989466 (1991-02-01), Goodman
patent: 5184521 (1993-02-01), Tyler
Blankenship Howard B.
McLellan Joseph F.
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