Planetarium

Details Planetarium Planetarium

1990-06-14

1991-07-30

Grieb, William H.

Education and demonstration

Science

Astronomy

G09B 2700

Patent

active

050356232

ABSTRACT:
This planetarium is remarkable in that it comprises a sphere (5) consisting of two separate hemisphere (1-2) with diametrically opposed planes facing each other, defining between them a space (e) which can be varied as required, the said hemispheres being joined together by means of connection located at their centre, these being attached to a means (6) located between the two hemispheres, having at least a fixing function in relation to a supporting structure, the said hemispheres being capable, by virtue of their supports, of assuming different positions along the 3 geometrical axes, without any encroachment by the said structure during the projection of the flux onto the vault; the said hemispheres being equipped with means permitting the projection of a luminous flux onto the vault of the planetarium room, and means (11-T) representing certain celestial bodies.

REFERENCES:
patent: 1693969 (1928-12-01), Villiger et al.
patent: 2827827 (1958-03-01), Spitz
patent: 3256619 (1966-06-01), Frank
patent: 3470629 (1969-10-01), Kittredge et al.
patent: 3863363 (1975-02-01), Miyajima

Affiliated with

Also associated with

Rating

Planetarium does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Planetarium, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Planetarium will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1540158