Abstract: A vibration and dust isolation system for use in isolating first and second spaced elements (20,22) which together form at least a part of the structure (14) to be sealed. A resilient strip (30) is interposed between the elements and a fastener (26) secures the elements in sandwiching relation to the strip. The improved strip is generally planar with a considerable majority (40) of the strip having a first thickness less than the spacing between the first and second element, an edge (42,56) having a second thickness somewhat greater than the spacing, and a load bearing portion (38) having a thickness somewhat greater than the spacing and comprising a considerable minority of the total surface of the strip. The load bearing portion is the predominant part of the strip contacting both elements.

Abstract: A motor vehicle has a cab that has forward observation windows in the front wall on opposite sides of the main frame below the windshield, and an access door at one side with cab side windows in the door and on the opposite side. A pivoted, outwardly opening window structure may be used in either location. The window structure has a lock to secure it in any desired position between a sealed closed position and a fully open position. The lock operates by clamping onto a hinge pin, and is readily manually manipulated from inside the cab. As used on a forward observation window, the pivot axis is so located that opening the window does not interfere with a windshield wiper arm and blade for the window that occupies a generally upright parked position near the main frame.