Patent ID: 6813802
Filing Date: 2004-11-09
Classification: B60S,Y10T

Abstract:
A method for manufacturing a wiper arm for supporting a wiper blade for oscillatory rotary movement with respect to a windscreen comprising the steps of:forming a body having a first end and a second end, the first end of the body being connectible to and supportable by a drive shaft for imparting oscillatory rotary movement, and the second end of the body being connectible to and supporting a wiper blade; forming a torsional region of the body capable of toggle action defined by two stable positions lying spaced at opposite sides of an unstable range of movement, where one of the two stable positions exerts downward pressure on a wiper blade connectible to the body for engagement against a windscreen to be wiped; initially forming the torsional region of the body defined by first and second torsional members, each torsional member when in a relaxed state having a free end cantilevered outwardly from the first end of the body and spaced from one another; subsequently flexing each torsional member from the relaxed state into a flexed state such that the free ends engage one another; and connecting the free ends of the torsional members with respect to one another when in the flexed state.