Ergonomic antifatigue seating device and method

• US 5,588,704 A
• Filed: 04/15/1996
• Issued: 12/31/1996
• Est. Priority Date: 08/13/1992
• Status: Expired due to Term

• Current Assignee: Richard D. Harza
• Original Assignee: Richard D. Harza
• Inventors: Harza, Richard D.
• Primary Examiner(s): Vanatta, Amy B.
• Application Number:
  US08/632,770
• Time in Patent Office: 260 Days
• Field of Search: 297/313, 297/314, 297/337, 297/DIG. 10, 297/330, 297/344.23, 601/1, 601/84, 601/87, 601/90, 601/91, 601/93, 601/98, 601/101, 601/26, 248/398, 248/651, 248/652, 248/660
• US Class Current: 297/314
• CPC Class Codes: A47C 3/0251 driven by electric motors
• CPC Class Codes: A47C 3/0255 pivotally mounted in the base frame, e.g. swings
• CPC Class Codes: A47C 9/002 with exercising means or having special therapeutic or ergonomic effects
• CPC Class Codes: A61H 1/0292 for the spinal column A61H1/0218 takes precedence

Abstract

A method and apparatus is disclosed for periodically and rhythmically lifting one hip of a seated person and then the other, thereby simulating the muscle stimulation and relaxation imparted to a person by walking. A rotatable support panel is provided for alternately lifting and moving backward and forward each hip of a seated person.

Claims

1. An ergonomic antifatigue device for moving the hips and lower midsection of a person seated in a seating apparatus, the device comprising:

a first support having a support element positioned under the hips of the seated person, said support element comprising a left side and a right side;

a central point located substantially within said support element;

a second support structure connected to said support element at said central point for maintaining said central point in a substantially non-moving position while allowing movement of all portions of said support element other than said central point; and

a motor and coupling connected to said first support;

said motor and coupling automatically and alternately pivoting said left side of said support element up and down about said central point, and automatically and alternately pivoting said right side of said support element up and down about said central point, thereby automatically and alternately lifting one hip of the seated person and then the other hip;

said motor and coupling also automatically and alternately rotating said support element back and forth about said central point as a series of cyclical rotations and counter-rotations, thereby cyclically moving backward and forward the hips of the seated person;

whereby motion and stimulation are translated to the seated person in a similar fashion to the motion and stimulation imparted to a person through walking.

2. The device defined in claim 1 wherein said support element comprises a substantially planar surface.

3. The device defined in claim 1 wherein said support element at least partially follows the contour of a human buttocks.

4. The invention defined in claim 1 wherein said central point is adjacent to a pelvis of the seated person.

5. The invention defined in claim 1 wherein said second support comprises a stem, fixed at one end to a support panel, and movably attached at another end to said support element.

6. The invention defined in claim 5 wherein said stem is movably attached to said support element at said central point.