Title:
ROLL SCREEN
Document Type and Number:
Japanese Patent JP3524738
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a roll screen capable or mitigating impact sound and impact force caused by a weight bar in a screen winding final stage.
SOLUTION: A roll screen is provided with a second brake 26 composed of a screw shaft 30 fixedly supported to a side plate 14, a clutch case 32 disposed movably in an axial direction to a winding pipe 16 but out of relative rotation so as to move on the screw shaft 30 in association with the rotation of the winding pipe 16, and a brake part 34 provided on the end part side of the screw shaft 30. The clutch case 32 is engaged with the brake part 34 from a screen winding final stage to operate the brake part 34 so as to reduce screen winding speed.
Inventors:
Yamanaka, Hiromi
Egami, Kenichiro
Akimoto, Masayuki
Egami, Kenichiro
Akimoto, Masayuki
Application Number:
JP32610797A
Publication Date:
May 10, 2004
Filing Date:
November 27, 1997
Export Citation:
Assignee:
NICHIBEI CO LTD
International Classes:
E06B9/60; E06B9/80; E06B9/40; E06B9/82; G03B21/58; (IPC1-7): E06B9/80
Attorney, Agent or Firm:
石戸 元 （外３名）
Previous Patent: ELECTRON GUN AND ELECTRON BEAM
Next Patent: COMPOSITION FOR SPECTACLE LENS AND SPECTACLE LENS
Next Patent: COMPOSITION FOR SPECTACLE LENS AND SPECTACLE LENS