Pneumatic stool with foot rest connected to seat base

• US 3,891,270 A
• Filed: 05/10/1974
• Issued: 06/24/1975
• Est. Priority Date: 05/10/1974
• Status: Expired due to Term

• Current Assignee: Krueger Incorporated
• Original Assignee: Philip Edgar Crossman, Richard Jerome Resch
• Inventors: Crossman, Philip Edgar, Resch, Richard Jerome
• Primary Examiner(s): McCall, James T.
• Application Number:
  US05/468,714
• Time in Patent Office: 410 Days
• Field of Search: 297/347,345,423,437,71 108/147,141 248/404,188.5
• US Class Current: 297/344.19
• CPC Class Codes: A47C 3/30 with vertically-acting fluid cylinder
• CPC Class Codes: A47C 7/50 Supports for the feet or the legs coupled to fixed parts of the chair coupled to other adjustable parts of the reclining or easy chair A47C1/034, A47C1/037; stand-alone rests or supports for the feet or the legs, e.g. footstools A47C16/02
• CPC Class Codes: A47C 9/007 High stools, e.g. bar stools children's high chairs A47D1/00

Abstract

A swivel stool seat is supported by a central column and a pneumatic cylinder which adjusts the height of the seat within a predetermined range. A foot rest is rigidly attached to the seat mounting spider and depends downwardly therefrom. The foot rest turns with the seat and raises and lowers with the seat. The bottom of the pneumatic cylinder is supported by a retainer fork that extends through horizontal slots in the central column. A thrust bearing is positioned between the retainer fork and the lower end of the pneumatic cylinder. A generally cylindrical shroud removably covers the portion of the column that includes the horizontal slots for the retainer fork to hide the retainer fork from view.

Claims

1. A swivel stool comprising a base including a hollow cylindrical column, a pneumatic cylinder enclosed at its lower end within the upper end of said column, a flat retainer member for supporting the lower end of said pneumatic cylinder, at least two horizontal slots formed in said column for receiving and supporting said retainer member, a thrust bearing positioned between the upper surface of said retainer member and the lower end of said pneumatic cylinder, a mounting spider attached to the upper end of said pneumatic cylinder, and a seat attached to the upper side of said mounting spider and wherein a shaft extends downwardly from the lower end of said pneumatic cylinder, and wherein one side of said retainer member is forked to embrace said shaft.

2. The swivel stool defined in claim 1 and further comprising a hollow bushing sleeve located within the top portion of said column, the inside diameter of said bushing sleeve being slightly larger than the outside diameter of said pneumatic cylinder, and a lower portion of said pneumatic cylinder being rotatably supported wIthin said bushing sleeve.

3. The swivel stool defined in claim 1 and further comprising a hollow cylindrical shroud covering the portion of said column including said slots for receiving said retainer member.

4. A swivel stool as defined in claim 3 and further comprising a plurality of legs radiating outwardly from the bottom of said column for supporting the same, and a plurality of slots formed in the bottom of said shroud for receiving said legs to cover the joints between said legs and said column.