Patent ID: 7451669

Claim:
A non-slip variable speed transmission comprising: a) a housing; b) input and output drive shafts extending into said housing; c) a circular pin carrier; d) said pin carrier having an outer rim and an inner hub; e) said pin carrier having a circular grill extending between said outer rim and said inner hub; f) said circular grill including multiple adjacent pin receiving openings from said outer rim to said inner hub; g) said outer rim and said inner hub including vertical flanges extending above and below said circular grill; h) vertically movable identical pins mounted in each of said pin receiving openings of said grill; i) said pins each having upper and lower portions; j) said upper portions of each of said pins having a diameter greater than said lower portion of each of said pins and greater than the diameter of its respective pin receiving opening; k) said upper portion of said pins normally resting on said grill adjacent its respective pin receiving opening; l) said lower portion of each of said pins mounted in its respective pin receiving opening; m) each of said lower portion of said pins being of a diameter substantially equal to the diameter of its respective pin receiving opening and in slideable contact in its respective pin receiving opening; n) said pins including outer rim and inner hub engaging pins; o) said outer rim having grooves for supporting said outer rim engaging pins; p) said inner hub having grooves for supporting said inner hub engaging pins; q) said pins having a length substantially equal to the height of said inner hub and outer rim; r) a radially movable pin lifter engageable with the lower portion of a first selected number of said pins between said inner hub and said outer rim for vertical upward displacement of said first selected number of pins; s) means mounted below said circular grill for shifting said pin lifter from between said inner hub to said outer rim for vertical upward displacement of a second selected number of pins and replacement of said first selected number of pins to vary transmission speed; t) axially rotatable gear means cooperating with said pin lifter and connected to one of said drive shafts and mounted above said circular grill and engageable with said upper portions of said vertically displaced selected number of pins; and u) a circumferential rotatable support connection rotatable on an X axis and connected to either of said drive means.