Rear view mirror

Claim 1

A rear-view-mirror arrangement which can be detachably mounted to the window of a vehicle, said arrangement comprising an arm, on one end of which there is arranged a device for holding a mirror and on the other end of which there is arranged means for detachably mounting said arrangement to said window including a U-shaped member having limbs, whose distance apart is equal to or slightly greater than the thickness of said window, the outwardly facing limb of said attachment device carrying a sleeve arranged to co-act with said arm so as to permit rotation of said arm in said sleeve, wherein (a) said arm at said attachment device is provided with a curved portion whose angle of curvature is less than 80° and more than 45° so that it is locatable at the edge of or externally of the area of vision of the driver of said vehicle to said mirror; (b) said other end of said arm having a threaded portion, with which a corresponding nut cooperates; (c) a spring loosely surrounding said other end of said arm and biasing the lower surface of said sleeve and the upper surface of said nut apart; and, (d) a pin affixed to said other end of said arm a predetermined axial distance from said threaded portion said pin bearing against the upper surface of said sleeve and compressing said sleeve against said spring, the upper surface of said sleeve having grooves which cooperate with said pin to thereby permit said mirror to be adjusted to anyone of a number of predetermined positions, and in that the arrangement of said arm is such that when said arm is subjected to a pressure exceeding a pre-determined value said pin will no longer co-act with said groove thereby enabling the arm to rotate relative to said sleeve.