Ergometric Chair Apparatus

• US 20110304192A1
• Filed: 06/15/2010
• Published: 12/15/2011
• Est. Priority Date: 06/15/2010
• Status: Abandoned Application

• Current Assignee: Betty A. Augustat
• Original Assignee: Betty A. Augustat
• Inventors: Augustat, Betty A.
• Application Number:
  US12/816,226
• Publication Number:
  US 20110304192A1
• Time in Patent Office: Days
• US Class Current: 297/452.23
• CPC Class Codes: A47C 1/03255 with a central column, e.g. rocking office chairs

Abstract

The present invention and method is for a chair disposed upon a surface that is designed for a female anatomy; the chair includes a seat having proximate and distal end portions forming a first convex surface with a chord plane intersecting, the having a length shorter than its width. The chair also includes a back having first and second end portions that form a second convex surface, wherein, a second lateral measure on the second end is less than a first lateral measure on the first end. The seat plane and an extension axis that is perpendicular to the surface are relatively positioned to one another to form an acute angle to one another, such that a user'"'"'s femur bone lengthwise angles downward from hip to knee toward the surface while the user'"'"'s shoulders arch rearward thus aligning the user'"'"'s hip joint and shoulder joint vertically for better posture.

Claims

1. A chair adapted for a female anatomy, wherein said chair is adjacent to a surface, comprising:

(a) a seat having a proximate end portion and a distal end portion forming a first substantially convex arcuate profile surface there between, said seat also including a length substantially parallel to said first substantially convex arcuate profile surface and a first distance substantially transverse to said length, said first substantially convex arcuate profile surface formed from a first partial arc of a first radius, said first radius being greater than said length, in addition said first substantially convex arcuate profile surface including a first seat tangential point on said proximate end portion and a second seat tangential point on said distal end portion, wherein said first seat tangential point and said second seat tangential point are at a second distance apart forming a seat plane;

(b) a back having a first end portion and a second end portion, said first and second end portions forming a second substantially convex arcuate profile surface, said back also including a dimension substantially parallel to said second substantially convex arcuate profile surface and a first measure and a second measure both being substantially transverse to said dimension, wherein said second measure on said second end portion is less than said first measure on said first end portion, said second substantially convex arcuate profile surface formed from a second partial arc of a second radius, said second radius being greater than said dimension, in addition said second substantially convex arcuate profile surface including a first back tangential point on said first portion and a second back tangential point on said second portion, wherein said first back tangential point and said second back tangential point are at a third distance apart forming a backplane;

(c) said seat plane and an extension axis that is perpendicular to the surface are relatively positioned to one another to form an acute angle to one another at an intersection point positioned therebetween said first seat tangential point and said second seat tangential point;

(d) said seat and back are relatively positioned such that a span from said first seat tangential point to said first back tangential point is at least equal to half of said dimension;

(e) a support base disposed between said seat and the surface; and

(f) a support structure disposed between said seat and said back.

2. A chair adapted for a female anatomy according to claim 1, wherein said acute angle is in the range of about fifty-five to eighty-five (55-85) degrees.

3. A chair adapted for a female anatomy according to claim 1, wherein said length is in the range of about thirteen (13) inches.

4. A chair adapted for a female anatomy according to claim 3, wherein said first distance is in the range of about sixteen (16) inches.

5. A chair adapted for a female anatomy according to claim 3, wherein said second distance is in the range of about eleven (11) inches.

6. A chair adapted for a female anatomy according to claim 1, wherein said dimension is in the range of about seven (7) inches.

7. A chair adapted for a female anatomy according to claim 6, wherein said third distance is in the range of about six (6) inches.

8. A chair adapted for a female anatomy according to claim 1, wherein said first measure is in the range of about twelve (12) inches.

9. A chair adapted for a female anatomy according to claim 8, wherein said second measure is in the range of about four (4) inches.

10. A chair adapted for a female anatomy according to claim 2 further comprising a high friction surface disposed upon said seat.

11. A chair adapted for a female anatomy according to claim 2 further comprising a memory foam disposed upon said seat.

12. A chair adapted for a female anatomy, wherein said chair is adjacent to a surface, comprising:

(a) a seat having a proximate end portion and a distal end portion forming a first substantially convex arcuate profile surface there between, said seat also including a length substantially parallel to said first substantially convex arcuate profile surface and a first distance substantially transverse to said length, said first substantially convex arcuate profile surface formed from a first partial arc of a first radius, said first radius being greater than said length, in addition said first substantially convex arcuate profile surface including a first seat tangential point on said proximate end portion and a second seat tangential point on said distal end portion, wherein said first seat tangential point and said second seat tangential point are at a second distance apart forming a seat plane;

(b) a back having a first end portion with a transition to a second end portion, said first and second end portions forming a second substantially convex arcuate profile surface, said back also including a dimension substantially parallel to said second substantially convex arcuate profile surface and a first measure and a second measure both being substantially transverse to said dimension, wherein said second measure on said second end portion is less than said first measure on said first end portion, said second substantially convex arcuate profile surface formed from a second partial arc of a second radius, said second radius being greater than said dimension, in addition said second substantially convex arcuate profile surface including a first back tangential point on said first portion and a second back tangential point on said second portion, with a maximum said second radius extension portion positioned therebetween said first and second back tangential points, wherein said first back tangential point and said second back tangential point are at a third distance apart forming a backplane;

(c) said seat plane and an extension axis that is perpendicular to the surface are relatively positioned to one another to form an angle of about seventy-five (75) to eighty-seven (87) degrees to one another at an intersection point positioned therebetween said first seat tangential point and said second seat tangential point;

(d) said seat and back are relatively positioned such that a span from said first seat tangential point to said first back tangential point is about six (6) to nine (9) inches;

(e) a support base disposed between said seat and the surface; and

(f) a support structure disposed between said seat and said back.

13. A chair adapted for a female anatomy according to claim 12 wherein said seat proximate end portion and said transition are positioned about fourteen (14) to seventeen (17) inches apart.

14. A chair adapted for a female anatomy according to claim 12 wherein said seat proximate end portion and said maximum second radius extension portion are positioned about eight (8) to eleven (11) inches apart.

15. A chair adapted for a female anatomy according to claim 12 wherein said seat proximate end portion and said maximum second radius extension portion are positioned with an overlap of about two (2) inches parallel to the surface.

16. A method of using chair adapted for a female anatomy, wherein said chair is adjacent to a surface, comprising the steps of:

(a) providing a chair that is adapted for a female anatomy that includes a seat having a proximate end portion and a distal end portion forming a first substantially convex arcuate profile surface therebetween, said seat also including a length substantially parallel to said first substantially convex arcuate profile surface and a first distance substantially transverse to said length, said first substantially convex arcuate profile surface formed from a first partial arc of a first radius, said first radius being greater than said length, in addition said first substantially convex arcuate profile surface including a first seat tangential point on said proximate end portion and a second seat tangential point on said distal end portion, wherein said first seat tangential point and said second seat tangential point are at a second distance apart forming a seat plane, further included is a back having a first end portion with a transition to a second end portion, said first and second end portions forming a second substantially convex arcuate profile surface, said back also including a dimension substantially parallel to said second substantially convex arcuate profile surface and a first measure and a second measure both being substantially transverse to said dimension, wherein said second measure on said second end portion is less than said first measure on said first end portion, said second substantially convex arcuate profile surface formed from a second partial arc of a second radius, said second radius being greater than said dimension, in addition said second substantially convex arcuate profile surface including a first back tangential point on said first portion and a second back tangential point on said second portion, with a maximum said second radius extension portion positioned therebetween said first and second back tangential points, wherein said first back tangential point and said second back tangential point are at a third distance apart forming a backplane, a support base disposed between said seat and the surface, and a support structure disposed between said seat and said back;

(b) adjusting said seat plane to an extension axis that is perpendicular to the surface such that they are relatively positioned to one another to form an acute angle from between about fifty-five (55) to eighty-five (85) degrees to one another, wherein said angle is taken at an intersection point positioned therebetween said first seat tangential point and said second seat tangential point, determination of said angle will be based upon a user'"'"'s leg length, seat height above the surface, and the user'"'"'s comfort level in said adjusting of said angle;

(c) adjusting said seat and back such that they are relatively positioned to one another to result in a selected span from said first seat tangential point to said first back tangential point, said selected span being based upon the user sitting in said chair after completing said angle adjusting step and measuring a distance from said first seat tangential point to a small of the back of the user, wherein said maximum second radius extension portion is positioned to be in contact with the small of the back of the user at said selected span; and

(d) adjusting said maximum second radius extension portion in a selected reach parallel to the surface to be positioned in contact with the small of the back of the user while the user is sitting in said chair after completing said angle adjusting step and said span adjusting step.