Shutter operating system

Details Shutter operating system Shutter operating system

1982-03-18

1984-09-18

Downey, Kenneth

Movable or removable closures

With operator for movably mounted closure

One direction pull cable

52 69, 49362, E05F 1104

Patent

active

044715749

ABSTRACT:
A shutter operating system for a shutter hinged along a horizontal axis of an opening such as a fenestration in a wall includes cables attached to the free end of the shutter which are threaded through passages in the wall above the fenestration and to a horizontal counterweight member operating multiple cable pull points evenly through use of vertical equalizer brackets and restraint roller assemblies, assisted in operation by a hydraulic or pneumatic piston assembly, which opens and closes the shutter. The shutter operating system can also be operated manually without the assistance of the hydraulic or pneumatic piston assembly.

REFERENCES:
patent: 1793991 (1931-02-01), Blocki
patent: 1966934 (1934-07-01), Scheineman et al.
William K. Langdon-Movable Insulation--1980, Chaps. 10, 14 & 15.

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