Bar stool

• US 6,003,944 A
• Filed: 06/02/1998
• Issued: 12/21/1999
• Est. Priority Date: 06/02/1997
• Status: Expired due to Term

• Current Assignee: aeris GmbH
• Original Assignee: Josef Glockl
• Inventors: Glockl, Josef
• Primary Examiner(s): Cuomo, Peter M.
• Assistant Examiner(s): WHITE, RODNEY BARNETT
• Application Number:
  US09/089,090
• Time in Patent Office: 567 Days
• Field of Search: 297/337, 297/313, 297/314, 297/461, 297/423.1, 297/423.12, 297/423.36, 297/423.38
• US Class Current: 297/337
• CPC Class Codes: A47C 3/18 Chairs or stools with rotatable seat adjustable in height by rotation A47C3/24
• CPC Class Codes: A47C 3/22 with balancing device, e.g. by spring, by weight
• 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 9/007 High stools, e.g. bar stools children's high chairs A47D1/00

Abstract

A bar stool having a seat portion, an intermediate portion and a base portion, wherein the intermediate portion has a spring construction and is mounted tiltably and returnably on the base portion. The intermediate portion comprises a central pillar and a spring arrangement which are connected to distribute the weight between the seat portion and the base portion.

Claims

1. A bar stool comprising

a seat portion,

a base portion,

an intermediate portion operatively disposed between the seat portion and the base portion, the intermediate portion having a spring construction comprising a central pillar and a spring arrangement, said central pillar and said spring arrangement being disposed in a concentric relationship and including a bearing guide operatively disposed between the central pillar and said spring arrangement, whereby the central pillar and the spring arrangement are connected in the distribution of weight between the seat portion and the base portion, and

means mounting the intermediate portion tiltably and returnably on the base portion.

2. The bar stool as set forth in claim 1, wherein the base portion has a shaft fixed thereto.

3. The bar stool as set forth in claim 2 including

a foot ring carried on the shaft at a spacing from the ground.

4. A bar stool as set forth in claim 3 including

means for the heightwise adjustment of a position of the foot ring on the shaft.

5. The bar stool as set forth in claim 1,

wherein the spring arrangement includes a dynamic spring mounting means and a static spring mounting means, with a spring operatively disposed between the dynamic and the static spring mounting means.

6. The bar stool as set forth in claim 5, wherein the bearing guide is arranged between the central pillar and the static spring mounting means.

7. The bar stool as set forth in claim 1, wherein the central pillar is a spring pillar with at least one vertical guide track cooperating with the bearing guide.

8. The bar stool as set forth in claim 7, wherein the spring arrangement comprises a dynamic spring mounting means, a static spring mounting means and a spring operatively disposed therebetween, and wherein the guide track comprises a tube having a first end connected to a lower end of the spring pillar and a second end connected to a dynamic spring mounting.

9. The bar stool as set forth in claim 8, including a plain bearing bush between the guide track tube and the spring pillar.

10. The bar stool as set forth in claim 8, including means for adjusting the spacing between the dynamic and the static spring mounting means.

11. The bar stool as set forth in claim 7 including means for adjusting the spring pillar with respect to its length.

12. The bar stool as set forth in claim 1, wherein the bearing guide includes at least a two-part bearing means arranged at a spacing with respect to height.

13. The bar stool as set forth in claim 12, wherein the bearing means has a plurality of bearing elements.

14. The bar stool as set forth in claim 13, wherein the bearing elements comprise rollers.

15. The bar stool as set forth in claim 13, wherein the bearing elements comprise balls.

16. The bar stool as set forth in claim 13, including spring-loading means adapted to press the bearing elements against the guide track.

17. The bar stool as set forth in claim 12, wherein the bearing means has at least four bearing elements at the periphery of the guide track.

18. The bar stool as set forth in claim 13, including bearing element mountings holding the bearing elements.

19. The bar stool as set forth in claim 18, including a support leg main body and means mounting the bearing element mountings radially displaceably in the support leg main body.

20. The bar stool as set forth in claim 18, including compression springs adapted to urge the bearing element mountings towards the guide track for pressing the bearing elements against the guide track.

21. The bar stool as set forth in claim 18, wherein the bearing element mountings have an elastically deformable region and are adapted to press the bearing elements towards the guide track by virtue of an elastic deformation thereof.

22. The bar stool as set forth in claim 18, wherein the bearing element mountings have an elastically deformable projection adapted to press the bearing elements towards the guide track.

23. The bar stool as set forth in claim 18, wherein the bearing element mountings are adapted to move to a predetermined extent between a tube of a static spring mounting means and the guide track.

24. The bar stool as set forth in claim 8, including a support leg main body on which the bearing guide is arranged.

25. The bar stool as set forth in claim 24, including a spline connection adapted to fit the support leg main body onto the base portion.

26. The bar stool as set forth in claim 1, including a rotatable union nut as a spring support means on a support leg main body, the spring of the spring arrangement being prestressable by said union nut.

27. The bar stool as set forth in claim 1, including a return device in the form of a rubber-metal swing connector disposed between the intermediate portion and the base portion.

28. The bar stool as set forth in claim 27, including means for adjusting the return force of the return device.