Mobile projection screen

Details Mobile projection screen Mobile projection screen

2005-03-22

2005-03-22

Mahoney, Christopher (Department: 2851)

Optical: systems and elements

Projection screen

C248S465000

Reexamination Certificate

active

06870672

ABSTRACT:
In varying embodiments, the present invention incorporates a combination of structures suitable for providing a lightweight and portable projection surface. In certain embodiments, the present invention includes a frame having four beams connected at the corners, with a collapsible brace at each corner, so that the frame can be collapsed for storage or transport. In certain embodiments, each beam may incorporate one or more collapsible inline braces in order to promote an even more compact profile when collapsed.

REFERENCES:
patent: 3041032 (1962-06-01), Wilcox
patent: 6334687 (2002-01-01), Chino et al.
Da-Lite Screen Company, Inc., The Power in Presentation Products, 2001, USA.
Draper, Inc., Products for Visual Communication, 2002, USA.
The Screen Works, E-Z Fold & E-Z Fold II.

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