IP Library Granted Patent US 10,695,257
Granted Patent B2
US 10,695,257 · App. 16/205,874 · Granted Jun 30, 2020

Collapsible rolling walker

Inventors: Michael Paterson (Chicago, IL); Tong Jin Kim (West Lafayette, IN); Kegan McDaniel (Chicago, IL); Luke Westra (Chicago, IL)
Assignee: Medline Industries, Inc.
A61H3/04A61H2003/002A61H2003/046A61H2201/0157A61H2201/0161A61H2201/1633
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Quick Facts
Patent No.
US 10,695,257
App. No.
16/205,874
Granted
Jun 30, 2020
Kind
B2
Abstract

A collapsible rolling walker that readily collapses for storage and/or transportation and that readily deploys for use.

Claims (30)

1. A rolling walker comprising:

a seat assembly;

a pair of hubs disposed on opposing sides of the seat assembly, each of the hubs comprising at least three sub-hubs wherein at least two of the sub-hubs for each of the hubs comprise rotatable sub-hubs that are configured to selectively rotate with respect to a non-rotating one of the sub-hubs;

a plurality of legs that are each secured to corresponding ones of the sub-hubs;

a plurality of handle arms that are each secured to corresponding ones of the sub-hubs;

such that the legs and the handle arms can be selectively rotated with respect to one another between a fully-collapsed state and a fully-deployed state and wherein the sub-hubs that comprise the non-rotating sub-hubs are secured to some, but not all, of the plurality of legs.

2. The rolling walker of claim 1 wherein the sub-hubs share a same external shape and cross-sectional size.

3. The rolling walker of claim 2 wherein the external shape comprises a disk.

4. The rolling walker of claim 3 wherein each of the sub-hubs has a disk cross-sectional diameter that is within 5 percent of one another.

5. The rolling walker of claim 3 wherein the sub-hubs for each of the hubs are coaxially aligned such that the hub also has a disk-shaped external shape.

6. The rolling walker of claim 1 wherein each of the sub-hubs secures to one, and only one, of the plurality of legs and handle arms.

7. The rolling walker of claim 1 wherein the legs that secure to the non-rotating sub-hubs are rear legs for the rolling walker.

8. The rolling walker of claim 1 wherein the legs and the handle arms are disposed at least within 5 degrees of one another when in the fully-collapsed state.

9. The rolling walker of claim 8 wherein the legs and the handle arms are disposed at least within 2 degrees of one another when in the fully-collapsed state.

10. The rolling walker of claim 1 wherein each of the handle arms integrally includes a part of the sub-hub to which the handle arm is respectively secured.

11. The rolling walker of claim 10 wherein at least some of the plurality of legs each integrally includes a part of the sub-hub to which the leg is respectively secured.

12. A rolling walker comprising:

a seat assembly;

a pair of hubs disposed on opposing sides of the seat assembly, each of the hubs comprising at least three sub-hubs wherein at least two of the sub-hubs for each of the hubs comprise rotatable sub-hubs that are configured to selectively rotate with respect to a non-rotating one of the sub-hubs;

a plurality of legs that are each secured to corresponding ones of the sub-hubs;

a plurality of handle arms that are each secured to corresponding ones of the sub-hubs;

such that the legs and the handle arms can be selectively rotated with respect to one another between a fully-collapsed state and a fully-deployed state, and wherein the seat assembly includes integral flanges that each comprise a part of one of the sub-hubs.

13. A rolling walker comprising:

a seat assembly;

a pair of hubs disposed on opposing sides of the seat assembly, each of the hubs comprising at least three sub-hubs and wherein the hubs share a common central axis, and further wherein at least two of the sub-hubs for each of the hubs comprise rotatable sub-hubs that are configured to selectively rotate with respect to a non-rotating one of the sub-hubs;

a plurality of legs that are each secured to corresponding ones of the sub-hubs;

a plurality of handle arms that are each secured to corresponding ones of the sub-hubs;

such that the legs and the handle arms can be selectively rotated with respect to one another between a fully-collapsed state and a fully-deployed state, and wherein the seat assembly is configured to selectively pivot about the common central axis.

14. The rolling walker of claim 13 wherein the seat assembly is configured to selectively pivot about the common central axis even when the plurality of legs and handle arms are disposed in the fully-deployed state.

15. The rolling walker of claim 14 wherein the seat assembly is configured to selectively pivot about the common central axis between a horizontal position and a vertical position when the plurality of legs and handle arms are disposed in the fully-deployed state.

Assignments (6)
PATENT SECURITY AGREEMENT Recorded May 28, 2026
From: MEDLINE INDUSTRIES, LP
To: WILMINGTON TRUST, NATIONAL ASSOCIATION, AS NOTES COLLATERAL AGENT
Reel/Frame 075643/0462 →
PATENT SECURITY AGREEMENT Recorded Jun 20, 2025
From: MEDLINE INDUSTRIES, LP
To: WILMINGTON TRUST, NATIONAL ASSOCIATION, AS NOTES COLLATERAL AGENT
Reel/Frame 071672/0100 →
SECURITY INTEREST Recorded Oct 21, 2021
From: MEDLINE INDUSTRIES, LP
To: WILMINGTON TRUST, NATIONAL ASSOCIATION
Reel/Frame 057927/0091 →
SECURITY INTEREST Recorded Oct 21, 2021
From: MEDLINE INDUSTRIES, LP
To: BANK OF AMERICA, N.A.
Reel/Frame 058040/0001 →
CHANGE OF NAME Recorded Oct 20, 2021
From: MEDLINE INDUSTRIES, INC.
To: MEDLINE INDUSTRIES, LP
Reel/Frame 057876/0748 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 30, 2018
From: PATERSON, MICHAEL; KIM, TONG JIN; MCDANIEL, KEGAN; WESTRA, LUKE
To: MEDLINE INDUSTRIES, INC.
Reel/Frame 047643/0894 →