Tilting post supported seat biased to an upright position

• US 4,099,697 A
• Filed: 10/01/1976
• Issued: 07/11/1978
• Est. Priority Date: 10/02/1975
• Status: Expired due to Term

• Current Assignee: Alfred Von Schuckmann
• Original Assignee: Alfred Von Schuckmann
• Inventors: Von Schuckmann, Alfred
• Primary Examiner(s): Zugel, Francis K.
• Application Number:
  US05/728,541
• Time in Patent Office: 648 Days
• Field of Search: 297/314, 248/398, 248/385, 248/401, 248/372, 248/417, 248/418, 248/415, 248/416, 248/382, 108/2
• US Class Current: 248/604
• CPC Class Codes: A47C 3/026 with central column, e.g. rocking office chairs; Tilting chairs
• CPC Class Codes: A47C 3/30 with vertically-acting fluid cylinder
• CPC Class Codes: A47C 7/004 for chairs or stools with central column, e.g. office chairs
• CPC Class Codes: A47C 9/002 with exercising means or having special therapeutic or ergonomic effects
• CPC Class Codes: A47C 9/025 Stools for standing or leaning against, e.g. in a semi-standing or half-seated position

Abstract

A stool-like seat for limited mobility of the user with a high action radius comprises a base formed with a ball socket and a post carrying the seating surface and provided with a ball receivable in the socket. The post has a downwardly extending member engaging, within the base, a star-like array of tension springs which resist angular displacement of the post and bias the latter into a normal upright position.

Claims