IP Library Granted Patent US 9,744,094
Granted Patent B2
US 9,744,094 · App. 15/149,611 · Granted Aug 29, 2017

Walker apparatus and backrest therefor

Inventors: Julian Liu (Port Moody, CA); Nicolas Cinguino (Shanghai, CN)
Assignee: Evolution Technologies Inc.
A61H3/04A61H2003/002A61H2003/046A61H2201/0161A61H2201/0192A61H2201/1623A61H2201/1633
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 9,744,094
App. No.
15/149,611
Granted
Aug 29, 2017
Kind
B2
Abstract

There is provided a walker apparatus having a pair of spaced-apart, upright frame members. The walker apparatus includes a seat operatively connected to the upright frame members. The walker apparatus has a backrest cantilevered from the frame members. The backrest has at least one opening extending therethrough for permitting a user's vision past the backrest when the user grips the upright frame members.

Claims (38)

1. A backrest for a walker apparatus, the backrest having at least one opening extending therethrough and comprising a pair of spaced-apart, elongate upper and lower portions, the portions of the backrest connecting together at common ends, being flexible and extending from the walker apparatus in outwardly divergent directions relative to each other.

2. The backrest as claimed in claim 1 , wherein said at least one opening extends in a substantially horizontal direction.

3. The backrest as claimed in claim 1 , wherein the backrest is arcuate and laterally-foldable.

4. The backrest as claimed in claim 1 , wherein the backrest has a plurality of vertically-extending apertures extending therethrough.

5. The backrest as claimed in claim 4 , further including a plurality of vertically-extending strips coupled to and extending between the upper portion and the lower portion of the backrest, the vertically-extending apertures being interposed between adjacent ones of the strips.

6. A walker apparatus, comprising:

the backrest as claimed in claim 1 ; and

a pair of spaced-apart, upright frame members having upper ends, the upper portion of the backrest extending upwardly from the upper ends of the frame members when the walker apparatus is upright.

7. A walker apparatus, comprising:

the backrest as claimed in claim 1 ; and

a pair of spaced-apart, upright frame members having upper ends, the lower portion of the backrest extending downwardly from the upper ends of the frame members when the walker apparatus is upright.

8. A walker apparatus, comprising:

the backrest as claimed in claim 1 ; and

a pair of spaced-apart, upright frame members, said at least one opening of the backrest aligning with upper ends of the frame members.

9. A walker apparatus comprising:

a pair of spaced-apart, upright frame members; and

a backrest cantilevered to the frame members, the backrest being substantially rectangular in front profile, and wherein the walker apparatus further includes a pair of u-shaped, resilient connecting members that connect the backrest to upper ends of the frame members, respectively.

10. The walker apparatus as claimed in claim 9 , wherein the backrest has a plurality of spaced-apart vertically-extending slits extending therethrough.

11. The walker apparatus as claimed in claim 9 wherein the backrest includes a plurality of spaced-apart vertically-extending strips and a plurality of spaced-apart horizontally-extending strips intersecting with the vertically-extending strips in a grid-like pattern.

12. A backrest for a walker apparatus having upright members, the backrest being cantilevered to said upright members, being arcuate-shaped, being flexible, being outwardly-divergent and having a plurality of vertically-extending apertures extending therethrough.

13. The backrest as claimed in claim 12 , further including a plurality of vertically-extending strips, the vertically-extending apertures being between adjacent ones of the strips.

14. The backrest as claimed in claim 13 , wherein the strips are rectangular prisms in shape and wherein the backrest further includes a pair of upper and lower bridging members, the strips connecting to and extending between the bridging members.

15. The backrest as claimed in claim 12 wherein the apertures are arranged in a plurality of vertically-extending, spaced-apart columns, with each said column having a series of said apertures, the apertures further aligning in diagonally-extending rows.

16. A walker apparatus, comprising:

a pair of spaced-apart, upright frame members having upper ends;

a backrest cantilevered to the frame members, the backrest including a pair of spaced-apart, elongate upper and lower straps, a first of said straps of the backrest aligning with and tangentially extending from the upper ends of the frame members; and

a pair of arc-shaped connecting members that connect the upper strap and the lower strap together, the upper strap and the lower strap connecting to and extending tangentially from the arc-shaped connecting members.

17. A walker apparatus, comprising:

a pair of spaced-apart, upright frame members having upper ends; and

a backrest cantilevered to the frame members, the backrest including a pair of spaced-apart, elongate upper and lower straps, a first of said straps of the backrest aligning with and tangentially extending from the upper ends of the frame members, the backrest having a concave-shaped interior, and the backrest including a pair of cushioning members each coupling to a respective one of the straps of the backrest, the cushioning members being positioned within said interior of the backrest.

18. A backrest for a walker apparatus, the backrest having at least one opening extending therethrough and comprising a pair of spaced-apart, elongate upper and lower portions, the portions of the backrest connecting together at common ends, being flexible, and being most spaced-apart relative to each other in a region that aligns with a folding axis of the walker apparatus.

19. A walker apparatus, comprising:

a pair of spaced-apart, upright frame members; and

the backrest as claimed in claim 18 , the backrest having proximal ends coupled to the frame members and the backrest including a central portion positioned between the frame members, the upper portion and the lower portion of the backrest being increasingly spaced-apart as the upper portion and the lower portion of the backrest extend outwards from the proximal ends of the backrest and towards the central portion of the backrest.

20. A walker apparatus, comprising:

a pair of spaced-apart, upright frame members;

the backrest of claim 18 , the backrest being cantilevered to the frame members; and

a folding mechanism operatively connected to and interposed between the frame members, the folding mechanism enabling the walker apparatus to be laterally-foldable along said folding axis.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 9, 2016
From: LIU, JULIAN; CINGUINO, NICOLAS
To: EVOLUTION TECHNOLOGIES INC.
Reel/Frame 038516/0007 →
Continuity (2)
Continuation In Part 14193806 · Feb 28, 2014
Related Publication 20160250095A1 · Sep 1, 2016