Patent Number: 6,297,905

Title: Portable screen assembly

Abstract: A portable screen assembly includes a spring-biased roll rotatably mounted to a lower casing, and a screen rotatably mounted at one end thereof to a top bar. The screen is set to a desired height by adjusting a repulsive force for a descent of the screen, and an upward biasing force of a height retaining device engaged with an expansion device against gravity and an elastic force of a spring attached to the spring-biased roll.

Inventors: Takamoto; Hideo (Chuo-ku, JP), Omura; Tetsujiro (Chuo-ku, JP), Seki; Kazuharu (Setagaya-ku, JP)

Assignee: Izumi-Cosmo Co., Ltd.

International Classification: G03B 21/56 (20060101); G03B 21/58 (20060101); G03B 021/60 (); G03B 021/56 ()

Expiration Date: 10/02/2018