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US 4,059,141 AGranted
Intrusion barrier and guide for sliding windows, doors and the like
OwnerJames L. Huttoninventor
Life of this patent
Estimating the term…
Abstract
A barrier for barring the opening of a sliding window, door, etc., from intrusion from the exterior of a building or vehicle, the barrier being collapsible to permit escape of persons from the inside of the building or vehicle through the open window in the event of fire or other emergency. The barrier also constrains the window or door to move in a straight line parallel motion to prevent binding or sticking of the same in its slide bearings during opening or closing of the window or door.
Claims2
A device for association with a closure member,
- said closure member being slideable across an opening in a frame, comprising
- a cross member on the side of said opening opposite said closure member,
- a first pair of spaced parallel links pivotally connected at ones of their ends to said closure member,
- a second pair of spaced parallel links pivotally connected at ones of their ends to said cross member, one of said parallel links of
- the links of said first pair being pivotally connected at their opposite ends to the opposite ends of respective ones of the links of said second pair, and
- enforcing means for enforcing parallel swinging movement of the parallel links of each of the pairs upon sliding movement of said closure member, said enforcing means comprising:
- a cross link pivotally connected between one of said parallel links of one of said pairs and one of said parallel links of the other of said pairs,
- a pair of equalizer links pivotally connected together at ones of their ends and pivotally connected at the opposite ends thereof to respective ones of said opposite ends of said links of said first and second pairs, and
- a third equalizer link pivotally connected at one end to said cross link and pivotally connected at the opposite end thereof to the pivotal connection between said pair of equalizer links.
6 more elements
Dependencies are inferred from the claim text.