Screen panel fastener

Details Screen panel fastener Screen panel fastener

1991-07-11

1992-07-14

Wintercorn, Richard A.

Optical: systems and elements

Projection screen

359451, 359459, G03B 156

Patent

active

051308460

ABSTRACT:
A dome-shaped motion picture projection screen is constructed from an external supporting frame and a plurality of panels that are clipped to the frame by a series of individual fasteners that are hooked into the perforations in the panel and clamped to the frame. Each fastener has a L-shaped fastener body with a pair of hook-shaped pins that project from one end of one limb so that they can be hooked into the perforations in the panel. A screw extends through the other limb parallel to the first limb and can be tightened against a supporting frame member to secure the panel to the frame. By carefully controlling tightening of the screw, localized flattening of the panel at the positions of the hooks can be avoided. The ends of the hooks are so small as to be virtually invisible to the audience.

REFERENCES:
patent: 4057323 (1977-11-01), Ward, Jr.
patent: 4277136 (1981-07-01), Schudel
patent: 4318589 (1982-03-01), Brown et al.
patent: 4580361 (1986-04-01), Hillstrom et al.
patent: 4641918 (1987-02-01), Moffatt et al.
patent: 4750807 (1988-06-01), Chamayou Dit Felix
patent: 4984871 (1991-01-01), Martinez
patent: 5011263 (1991-04-01), Hopper

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