US 5,169,205 AGranted

Emergency exit window

AssigneeBlue Bird Body Company

InventorDavid R. James

Life of this patent

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Abstract

The invention relates to an emergency exit window for vehicles such as school buses. Spring biased latches are carried by the upper part of a window pane. The spring biased latches have bolts which engage stops at various locations on opposite sides of the window frame surrounding the window. The latches may be normally operated individually by hand to riase and lower the window between a ventilating position (including half-open and other partially open positions), and a fully closed position. The window is equipped with an emergency handle which may be used to pull the latches towards each other, and thereby enable the window to assume a fully open position. In the fully open position, inversion stops prevent the window from inadvertently closing in the event that the vehicle is overturned. The latches are housed in a latch cover which has latch openings. The latch openings are sized so that they prevent manual use of the latches to cause the window to be fully opened. Therefore, only the emergency handle may be used to move the window to the fully open emergency position.

Claims12

Dependent claims

An emergency exit window comprising:

a window frame defining a passageway, pane means for closing and opening said passageway, said pane means having a plurality of open positions including at least one ventilating position wherein said passageway is less than fully open, and an emergency position wherein said passageway is fully open, retaining means for holding said pane means in open and closed positions, said retaining means comprising latch means carried by said pane means, and stop means carried by said frame, said latch means having first actuation means for moving said pane means between a closed position and said at least one ventilating positions, and second actuation means for moving said pane means to said emergency position,
said latch means comprises a pair of sliding spring biased latches, and said first actuation means comprises finger operating means connected to said latches for manually moving said latches out of engagement with said stop means,
said second actuation means comprises tension means connected to inner ends of said latches, and emergency handle means for pulling said tension means and said latches, said stop means including at least one enlarged stop for preventing movement of said pane means to said emergency position by actuation of said first actuation means, said emergency handle means being capable of moving said latches an amount sufficient to allow said latches to move past said enlarged stop.

Dependencies are inferred from the claim text.

Facts

Application: 07/740,784Filed 6 Aug 1991
Granted: 8 Dec 1992
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

E05B 65/1033
For panic or emergency doors: emergency release of windows, window grills, escape hatches or the like
B60J 9/02
Devices not provided for in one of main groups B60J1/00 - B60J7/00: entrance or exit closures other than windows, doors, or in roofs, e.g.…
E05B 53/003
Operation or control of locks by mechanical transmissions, e.g. from a distance: flexible
E05B 65/0876
The bolts sliding parallel to the wings: cooperating with the slide guide, e.g. the rail