Portable screen device

Details Portable screen device Portable screen device

2004-04-22

2008-10-21

Mahoney, Christopher E (Department: 2862)

Optical: systems and elements

Projection screen

Roll up screen

Reexamination Certificate

active

07440187

ABSTRACT:
A portable screen assembly includes: a casing having an opening extending in a longitudinal direction on the upper surface thereof, and formed by a pair of separable case members that extend in the longitudinal direction; a spring-biased roll rotatably mounted in the casing; a screen wound around the spring-biased roll in a storage position and extended from the opening in use; a top bar fixed to one end of the screen which is used as a cover body to close the opening in the storage position; and an extendable column having one end erectably pivoted from a center part of a side face of the casing to hold the screen in a stretched state.

REFERENCES:
patent: 5581401 (1996-12-01), Takamoto et al.
patent: 5798861 (1998-08-01), Doat
patent: 6052227 (2000-04-01), Niwa et al.
patent: 6249377 (2001-06-01), Takamoto et al.
patent: 2 076 179 (1981-11-01), None
patent: 5-94837 (1993-12-01), None
patent: 6-10944 (1994-02-01), None
patent: 6-36048 (1994-05-01), None
patent: 8-69057 (1996-03-01), None
patent: 3385207 (2002-12-01), None

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