Patent ID: 9267384
Filing Date: 2016-02-23
CPC Classification: B64D,F01D,Y10T

Claim Text:
1. A flyweight for use in a ram air turbine comprising: a body formed of stainless steel, said body having a circumferentially enlarged portion extending between flat sides at circumferentially outermost ends spaced by an angle of between 45 degrees and 150 degrees; a pivot point defined by a bore at a circumferentially intermediate point in said body, and said pivot point being in a relatively thin inner portion, and said relatively thin inner portion extending beyond said pivot point to an end that will be radially inward when said flyweight is mounted in a ram air turbine; wherein said enlarged portion having a first flat surface generally spaced from said bore, and a second flat outer surface extending from said first flat surface, and into a first curved surface, said curve, a surface extending beyond said bore to a third flat surface, said third flat surface extending downwardly to a bottom flat surface, said bottom flat outer surface being at said end of said thin inner portion; an inner diameter of said liner defines a first diameter, and an inner diameter of said bore is at a second diameter, and a ratio of said first diameter to said second diameter is between 0.95 and 0.50; wherein said end of said thin inner portion having sides which are parallel to each other, and spaced by a first distance, planes defined parallel to the sides of said end of said thin inner portion and extending through said circumferentially outermost ends of said enlarged portion are spaced by a second distance, and a ratio of said first distance to said second distance being between 1.0 and 0.25; wherein said enlarged portion having a first flat surface generally spaced from said bore, and a second flat outer surface extending from said first flat surface, and into a first curved surface, said curve, a surface extending beyond said bore to a third flat surface, said third flat surface extending downwardly to a bottom flat surface, said bottom flat outer surface being at said end of said thin inner portion; wherein said third flat surface extending at an angle relative to said bottom flat surface, with said angle ranging between 45 degrees and 135 degrees; wherein said bottom flat surface portion extends into a second curved surface and into a first notch extending into said thin inner portion, and said first notch merging into an outermost point, with a second notch extending back inwardly toward said bore from said outermost point; and wherein said second notch extending into a fifth flat surface which extends generally parallel to said first flat surface, and a third curved surface merging from said fifth flat surface to merge an outer surface back into said first curved surface.