The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 25, 1984
Filed:
Sep. 30, 1983
Winston G Morrow, Lake Oswego, OR (US);
Spinal Dynamics, Inc., Lake Oswego, OR (US);
Abstract
A method and means for providing pelvic support to improve posture and relieve lower back pain is provided. The method comprises pressing a convex pillow against the region of the ilia, sacrum, and fifth lumbar vertebra to produce a substantial sacral base angle and to fully oppose any moment tending to cause rotational shifting of the pelvis. Another way to define the invention is a back pillow which may be used in a chair having a seat member, wherein the back pillow includes a convexly shaped support pillow for maintaining the pelvis of the user at a sufficient sacral base angle that substantially the entire weight of the upper portion of the user's body is supported by the seat member. The invention may alternatively be described as a chair comprising a substantially horizontal convex seat for supporting the ischial tuberosities of the occupant in the vicinity of the apex thereof, and a substantially vertical, generally convex support means for supporting the posterior portion of the occupant's pelvis at a sacral base angle of from between 25 and 45 degrees, and so that a gravitational line drawn downwardly from the center of L-3 intersects the anterior one-third of the sacral base.