Patent ID: 11865545
Assignee: BIOTIX, INC.
Field: Measurement (Instruments)
Classification: CPC B  G  Y | IPC B  G

Claim 0:
1. A nested pipette tip rack assembly comprising:
a rack base;
a first pipette tip receptacle plate in association with the rack base;
a second pipette tip receptacle plate proximally oriented to the first pipette tip receptacle plate;
a first array of pipette tips; and
a second array of pipette tips;
wherein the first pipette tip receptacle plate and the second pipette tip receptacle plate each comprise a proximal surface, a distal surface, an array of bores extending from the proximal surface to the distal surface and multiple ribs extending from the distal surface, wherein each plate comprises an X axis and a Y axis on the distal surface that intersect at a center of the distal surface and the ribs are distributed between each pipette tip receptacle plate bore parallel to the X axis or the Y axis, but not both the X axis and the Y axis;
wherein the first array of pipette tips are retained in the bores in the first pipette tip receptacle plate, and the second array of pipette tips are retained in the bores in the second pipette tip receptacle plate;
wherein each of the pipette tips in the second array of pipette tips is nested in a corresponding pipette tip in the first array of pipette tips, wherein the ribs of the second pipette tip receptacle plate space the second pipette tip receptacle plate from the first pipette tip receptacle plate at a distance sufficient to prevent or reduce over-nesting of the pipette tips in the second array in the corresponding pipette tips of the first array in, in which over-nesting is characterized by interference and resulting retention forces between pipette tips in the second array of pipette tips and the corresponding pipette tips in the first array of pipette tips that interfere with dissociation of the nested pipette tips when the second pipette tip receptacle plate and the second array of pipette tips is separated from the first pipette tip receptacle plate and the first array of pipette tips.