IP Library Granted Patent US 11,528,988
Granted Patent B2
US 11,528,988 · App. 16/191,382 · Granted Dec 20, 2022

Separation systems, devices and methods

Inventors: Alexis Noel (Atlanta, GA); David Hu (Atlanta, GA)
Assignee: Georgia Tech Research Corporation
A46B9/028A01K13/00A46B5/06A46B9/023A46B2200/1093
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Quick Facts
Patent No.
US 11,528,988
App. No.
16/191,382
Granted
Dec 20, 2022
Kind
B2
Abstract

A brush-like device that adapts to tangles in hair and allows for easy removal of hair post-groom using uniquely shaped, anisotropic papillae not unlike those found on a feline tongue.

Claims (67)

1. A method of separating a target formed of components comprising moving a base substrate with arcuate spines through the target, comprising:

extension of the base substrate with arcuate spines;

lateral expansion and stiffness of the base substrate;

sweep of the base substrate with arcuate spines through the target; and

retraction of the base substrate with arcuate spines in a retraction orientation;

wherein retraction of the base substrate comprises retraction of the base substrate with arcuate spines in a V-shaped curl.

2. The method of claim 1 further comprising transferring a wetting agent from at least a portion of the arcuate spines to the target.

3. The method of claim 1 , wherein moving the base substrate with arcuate spines through the target comprises a plurality of moving cycles.

4. The method of claim 1 , wherein the base substrate has a modulus of elasticity of from approximately 5.4-12.8 kPa.

5. The method of claim 1 , wherein the arcuate spines, each extending from the base substrate and terminating in a spine tip, have a modulus of elasticity of from approximately 1.61-1.99 GPa.

6. The method of claim 1 , wherein the target comprises strands of hair.

7. The method of claim 1 further comprising wetting the base substrate with arcuate spines.

8. The method of claim 1 , wherein moving the base substrate with arcuate spines comprises a plurality of cycles.

9. The method of claim 8 further comprising wetting the base substrate with arcuate spines between each cycle.

10. The method of claim 1 , wherein the base substrate has a modulus of elasticity of from approximately 5.4-12.8 kPa; and

wherein the arcuate spines, each extending from the base substrate and terminating in a spine tip, have a modulus of elasticity of from approximately 1.61-1.99 GPa.

11. The method of claim 1 , wherein the arcuate spines are backward-facing.

12. The method of claim 1 , wherein the arcuate spine density is approximately 0.2 arcuate spine/mm 2 .

13. The method of claim 1 , wherein the arcuate spines are embedded in the base substrate to a depth of approximately 0.9 mm.

14. The method of claim 1 , wherein the arcuate spines are shaped as papillae.

15. The method of claim 1 , wherein the arcuate spines are shaped as filiform papillae.

16. The method of claim 1 , wherein the relationship between the base substrate and the arcuate spines provides a frictionally anisotropic device.

17. The method of claim 1 further comprising wetting the base substrate with arcuate spines;

wherein the wettability of the base substrate is higher than the arcuate spines.

18. A method of separating a target formed of components comprising moving a base substrate with arcuate spines through the target, comprising:

extension of the base substrate with arcuate spines;

lateral expansion and stiffness of the base substrate;

sweep of the base substrate with arcuate spines through the target; and

retraction of the base substrate with arcuate spines in a retraction orientation;

wherein the relationship between the base substrate and the arcuate spines provides a frictionally anisotropic device.

19. The method of claim 18 , wherein retraction of the base substrate comprises retraction of the base substrate with arcuate spines in a V-shaped curl.

20. The method of claim 18 , wherein one or more of:

moving the base substrate with arcuate spines through the target comprises a plurality of moving cycles;

moving the base substrate with arcuate spines comprises a plurality of cycles and the method further comprises wetting the base substrate with arcuate spines between each cycle;

the base substrate has a modulus of elasticity of from approximately 5.4-12.8 kPa;

the arcuate spines, each extending from the base substrate and terminating in a spine tip, have a modulus of elasticity of from approximately 1.61-1.99 GPa;

the arcuate spine density is approximately 0.2 arcuate spine/mm 2 ;

the arcuate spines are embedded in the base substrate to a depth of approximately 0.9 mm;

the arcuate spines are backward-facing;

the arcuate spines are shaped as papillae;

the arcuate spines are shaped as filiform papillae;

the target comprises strands of hair;

the method further comprises transferring a wetting agent from at least a portion of the arcuate spines to the target;

the method further comprises wetting the base substrate with arcuate spines; and

the method further comprises wetting the base substrate with arcuate spines, wherein the wettability of the base substrate is higher than the arcuate spines.

21. A method of separating a target formed of components comprising moving a base substrate with arcuate spines through the target, comprising:

extension of the base substrate with arcuate spines;

lateral expansion and stiffness of the base substrate;

sweep of the base substrate with arcuate spines through the target;

retraction of the base substrate with arcuate spines in a retraction orientation; and

wetting the base substrate with arcuate spines;

wherein the wettability of the base substrate is higher than the arcuate spines.

22. The method of claim 21 , wherein one or more of:

moving the base substrate with arcuate spines through the target comprises a plurality of moving cycles;

moving the base substrate with arcuate spines comprises a plurality of cycles and the method further comprises wetting the base substrate with arcuate spines between each cycle;

the base substrate has a modulus of elasticity of from approximately 5.4-12.8 kPa;

the arcuate spines, each extending from the base substrate and terminating in a spine tip, have a modulus of elasticity of from approximately 1.61-1.99 GPa;

the arcuate spine density is approximately 0.2 arcuate spine/mm 2 ;

the arcuate spines are embedded in the base substrate to a depth of approximately 0.9 mm;

the arcuate spines are backward-facing;

the arcuate spines are shaped as papillae;

the arcuate spines are shaped as filiform papillae;

the target comprises strands of hair;

retraction of the base substrate comprises retraction of the base substrate with arcuate spines in a V-shaped curl;

the relationship between the base substrate and the arcuate spines provides a frictionally anisotropic device;

the method further comprises transferring a wetting agent from at least a portion of the arcuate spines to the target; and

the method further comprises wetting the base substrate with arcuate spines.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 16, 2019
From: NOEL, ALEXIS; HU, DAVID
To: GEORGIA TECH RESEARCH CORPORATION
Reel/Frame 049201/0100 →
CONFIRMATORY LICENSE Recorded Mar 1, 2019
From: GEORGIA INSTITUTE OF TECHNOLOGY
To: NATIONAL SCIENCE FOUNDATION
Reel/Frame 048483/0315 →
Continuity (2)
Provisional Application 62585651 · Nov 14, 2017
Related Publication 20190142151A1 · May 16, 2019