Transparent storm shutter

Movable or removable closures – Facially opposed primary and auxiliary closure for common... – Auxiliary mounted for movement

Patent

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Details

49125, 49360, E05B 6504

Patent

active

052282384

ABSTRACT:
A storm shutter for protecting glass windows and doors employs one or more transparent unbreakable panels having edges effectively increased in thickness to be retained in respective tracks in the shutter frame, the track having openings narrower than the thickened panel edges. To accommodate different coefficients of thermal expansion for the panel and frame, the track cross-sectional area is considerably larger than the thickened panel edge, yet the narrowed track opening retains the thickened edges, even if the panel is bowed by applied forces. Edge thickening may be effected by securing strips of the panel material along the panel edges. The shutter frame is pivotably mounted on a casing, and a retainer is slidable on the casing to lock or release the frame for pivoting relative to the casing. If the panel is movable along its tracks, a motor has a drive shaft fixed to the casing and about which support strips are wound to pull on the panel. The panel is biased away from the drive shaft to move the panel when the support strips are slack. Pivot pins, each having a ring at one end journaled about the drive shaft, are secured in the frame tracks to permit the frame to be selectively pivoted. For protecting a fixed pane door or window, the shutter casing is secured directly to the window or door frame.

REFERENCES:
patent: 169449 (1875-11-01), Knepper
patent: 1387062 (1921-08-01), Marshall
patent: 1492420 (1924-04-01), Burke et al.
patent: 2254150 (1941-08-01), Kingsland
patent: 3908730 (1975-09-01), Gross et al.
patent: 4175357 (1979-11-01), Goldhaber
patent: 4199900 (1980-04-01), Johnston
patent: 4364198 (1982-12-01), Netti
patent: 4685261 (1987-08-01), Seaquist

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