Facsimile and static presentation processing – Facsimile – Recording apparatus
Patent
1978-12-04
1980-06-24
Richardson, Robert L.
Facsimile and static presentation processing
Facsimile
Recording apparatus
358250, 358254, 312 7TV, H04N 574
Patent
active
042098076
ABSTRACT:
A projection type television set having a main body, a projecting tube accommodated by the main body, a screen attached to said main body and a mirror box pivotally mounted on the main body for free rotary movement around an axis between a closed position and an opened position, the mirror box including a mirror which is adapted, when the mirror box is in the opened position, to reflect the light coming from the projecting tube and project the same onto the screen so as to make a display of an image on the screen. The mirror box is connected to the main body through at least one control rod which has a tubular body, a spring seat movably received by the tubular body and a pair of coiled springs disposed at respective sides of the spring seat. As the mirror box is swung from the closed position toward the opened position, one of the coiled springs is released to exert a force for assisting the manual opening force, while the other coiled spring is compressed to prevent an abrupt declination of the heavy mirror box attributable to the weight of the same. Similarly, the other coiled spring is released while one of the coiled springs is compressed, when the mirror box is moved from the opened position to the closed position, so as to assist the manual force and to prevent the abrupt declination, respectively.
REFERENCES:
patent: 2437631 (1948-03-01), Wood
patent: 2477911 (1949-08-01), Travis et al.
patent: 2509508 (1950-05-01), Kalff et al.
patent: 3294906 (1966-12-01), Swanson
patent: 3944734 (1976-03-01), Ogawa
Matsushita Electric - Industrial Co., Ltd.
Richardson Robert L.
LandOfFree
Projection type television set does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Projection type television set, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Projection type television set will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1483179